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Jeong GJ, Rather MA, Khan F, Tabassum N, Mandal M, Kim YM. pH-responsive polymeric nanomaterials for the treatment of oral biofilm infections. Colloids Surf B Biointerfaces 2024; 234:113727. [PMID: 38157766 DOI: 10.1016/j.colsurfb.2023.113727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 12/14/2023] [Accepted: 12/23/2023] [Indexed: 01/03/2024]
Abstract
Bacterial and fungal pathogens forming oral biofilms present significant public health challenges due to the failure of antimicrobial drugs. The ability of biofilms to lower pH levels results in dental plaque, leading to gingivitis and cavities. Nanoparticles (NPs) have attracted considerable interest for drug delivery and, thus, as a solution to biofilm-related microbial infections. A novel strategy in this regard involves using pH-responsive polymeric NPs within the acidic microenvironment of oral biofilms. The acidity of the oral biofilm microenvironment is governed by carbohydrate metabolism, accumulation of lactic acid, and extracellular DNA of extracellular polymeric substances by oral biofilm-forming microbial pathogens. This acidity also provides an opportunity to enhance antibacterial activity against biofilm cells using pH-responsive drug delivery approaches. Thus, various polymeric NPs loaded with poorly soluble drugs and responsive to the acidic pH of oral biofilms have been developed. This review focuses on various forms of such polymeric NPs loaded with drugs. The fundamental mechanisms of action of pH-responsive polymeric NPs, their cytological toxicity, and in vivo efficacy testing are thoroughly discussed.
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Affiliation(s)
- Geum-Jae Jeong
- Department of Food Science and Technology, Pukyong National University, Busan 48513, Republic of Korea
| | - Muzamil Ahmad Rather
- Department of Molecular Biology and Biotechnology, Tezpur University, Napaam, Tezpur 784028 Assam, India
| | - Fazlurrahman Khan
- Institute of Fisheries Sciences, Pukyong National University, Busan 48513, Republic of Korea; Marine Integrated Biomedical Technology Center, The National Key Research Institutes in Universities, Pukyong National University, Busan 48513, Republic of Korea; Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan 48513, Republic of Korea.
| | - Nazia Tabassum
- Marine Integrated Biomedical Technology Center, The National Key Research Institutes in Universities, Pukyong National University, Busan 48513, Republic of Korea; Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan 48513, Republic of Korea
| | - Manabendra Mandal
- Department of Molecular Biology and Biotechnology, Tezpur University, Napaam, Tezpur 784028 Assam, India
| | - Young-Mog Kim
- Department of Food Science and Technology, Pukyong National University, Busan 48513, Republic of Korea; Marine Integrated Biomedical Technology Center, The National Key Research Institutes in Universities, Pukyong National University, Busan 48513, Republic of Korea; Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan 48513, Republic of Korea
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Cornejo Ulloa P, van der Veen MH, Brandt BW, Buijs MJ, Krom BP. The effect of sex steroid hormones on the ecology of in vitro oral biofilms. Biofilm 2023; 6:100139. [PMID: 37621393 PMCID: PMC10447177 DOI: 10.1016/j.bioflm.2023.100139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 06/27/2023] [Accepted: 06/27/2023] [Indexed: 08/26/2023] Open
Abstract
Sex steroid hormones (SSH) such as oestrogen, progesterone and testosterone are cholesterol derived molecules that regulate various physiological processes. They are present in both blood and saliva, where they come in contact with oral tissues and oral microorganisms. Several studies have confirmed the effect of these hormones on different periodontal-disease-associated bacteria, using single-species models. Bacteria can metabolize SSH, use them as alternative for vitamin K and also use them to induce the expression of virulence factors. However, it is still unclear what the effects of SSH are on the oral microbiome. In this study, we investigated the effects of four SSH on commensal in vitro oral biofilms. Saliva-derived oral biofilms were grown in Mc Bain medium without serum or menadione using the Amsterdam Active-Attachment model. After initial attachment in absence of SSH, the biofilms were grown in medium containing either oestradiol, oestriol, progesterone or testosterone at a 100-fold physiological concentration. Menadione or ethanol were included as positive control and negative control, respectively. After 12 days with daily medium refreshments, biofilm formation, biofilm red fluorescence and microbial composition were determined. The supernatants were tested for proteolytic activity using the Fluorescence Resonance Energy Transfer Analysis (FRET). No significant differences were found in biofilm formation, red fluorescence or microbial composition in any of the tested groups. Samples grown in presence of progesterone and oestradiol showed proteolytic activity comparable to biofilms supplemented with menadione. In contrast, testosterone and oestriol showed a decreased proteolytic activity compared to biofilms grown in presence of menadione. None of the tested SSH had large effects on the ecology of in vitro oral biofilms, therefore a direct translation of our results into in vivo effects is not possible. Future experiments should include other host factors such as oral tissues, immune cells and combinations of SSH as present in saliva, in order to have a more accurate picture of the phenomena taking place in both males and females.
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Affiliation(s)
- Pilar Cornejo Ulloa
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, the Netherlands
| | - Monique H. van der Veen
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, the Netherlands
| | - Bernd W. Brandt
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, the Netherlands
| | - Mark J. Buijs
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, the Netherlands
| | - Bastiaan P. Krom
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, the Netherlands
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Sharma P, Dhawan P, Rajpal SK, Sharma R. A Comparison of Antimicrobial Efficacy of Silver-based Preventive Restorations (Silver Nitrate, Silver Diamine Fluoride, and Silver Nanoparticles) against Streptococcus mutans Monospecies Biofilm Model. Int J Clin Pediatr Dent 2023; 16:S13-S19. [PMID: 37663210 PMCID: PMC10474386 DOI: 10.5005/jp-journals-10005-2575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2023] Open
Abstract
Aim The ability of the Streptococcus mutans (S. mutans) to form biofilms is not only crucial in the initiation of early childhood caries (ECC) but is also a challenge to its treatment. The current management protocols focus on remineralization and use of antimicrobial formulations which penetrate biofilms, control their formation, and decrease the incidence of caries in children. The paradigm shift toward preventive protocols and increasing antibiotic resistance rekindled the use of silver as a promising antibacterial agent. To gain further insight into the therapeutic potential, aim of the present study was to compare the antibacterial efficacy of silver-based preventive restorations [silver nitrate (AgNO3), silver diamine fluoride (SDF), and silver nanoparticles (AgNPs)] against S. mutans species. Materials and methods Using an ex vivo monospecies biofilm model of S. mutans; the antimicrobial efficacy of three treatment groups (SDF, AgNO3, and AgNPs) was evaluated. Results There was a significant difference between the negative control and three treatment groups (SDF, AgNO3, and AgNPs). The results showed that the mean diameter of inhibition zones obtained in biofilms treated with AgNPs was 40.3 ± 0.25 mm which was greater than both SDF (37.7 ± 0.18 mm) and AgNO3 (36.26 ± 0.18 mm). Conclusion The study concluded that the number of viable bacteria was significantly reduced by all three medicaments (p < 0.05). However, AgNPs showed the highest antimicrobial activity in comparison to SDF and AgNO3 against S. mutans biofilm. Clinical significance The present study thus supports that AgNPs are a promising preventive anticaries agent due to their better antibacterial activity in comparison to other silver-based preventive restorations and can be effectively used as an alternative to SDF or AgNO3 for the noninvasive treatment of ECC in the young. How to cite this article Sharma P, Dhawan P, Rajpal SK, et al. A Comparison of Antimicrobial Efficacy of Silver-based Preventive Restorations (Silver Nitrate, Silver Diamine Fluoride, and Silver Nanoparticles) against Streptococcus mutans Monospecies Biofilm Model. Int J Clin Pediatr Dent 2023;16(S-1):S13-S19.
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Affiliation(s)
- Poonam Sharma
- Department of Pedodontics and Preventive Dentistry, BRS Dental College and Hospital, Panchkula, Haryana, India
| | - Preeti Dhawan
- Department of Pedodontics and Preventive Dentistry, BRS Dental College and Hospital, Panchkula, Haryana, India
| | - Sumeet K Rajpal
- Department of Pedodontics and Preventive Dentistry, BRS Dental College and Hospital, Panchkula, Haryana, India
| | - Reena Sharma
- Department of Microbiology, Sundernagar, Himachal Pradesh, India
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Thimmegowda U, Belagatta V, Chikkanarasaiah N, Bilichodmath S. Identification and Correlation of Streptococcus mutans and Streptococcus sanguinis in Caries-active and Caries-free Children: A PCR Study. Int J Clin Pediatr Dent 2023; 16:9-15. [PMID: 37020765 PMCID: PMC10068000 DOI: 10.5005/jp-journals-10005-2512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023] Open
Abstract
Aim and objectives Dental caries is currently considered an ecological imbalance within the oral biofilm leading to the dissolution of the tooth's hard tissues. It has been traditionally thought that two species belonging to the Streptococci group, Streptococcus mutans (SM) and Streptococcus sanguinis (SS), are the etiologically responsible for the onset of dental decay. Materials and methods The present in vivo study was conducted on 40 children with caries-active (CA) and caries-free (CF). They were allocated into two groups, group I (CA) = 20 and group II (CF) = 20. The whole saliva was collected into the vials with buffer solution and was stored in cold storage. Polymerase chain reaction (PCR) was done to identify and correlate SM and SS in CA and CF children. Results Comparison of mean SM level between CA and CF groups showed a statistically significant result at p = 0.001. Spearman's correlation between caries score and SM showed a strong correlation of 0.77 between caries score and SM, which was statistically significant at p = 0.001. Similarly, SS and caries scores showed a weak correlation of 0.22. Simple linear regression analysis to SM and caries score showed a significant increase of 4.74 units for 1 score increase in caries score, which is statistically significant. Conclusion The presence of SM levels in children with caries is significant, whereas, in CF children, SS levels are present in increased levels. A strong correlation was seen between caries scores and SM. The simple linear regression analysis predicts a statistically significant increase by 4.74 units per increase of 1 score of caries at p < 0.001. As caries increase, SM count increases, but SS count decreases; as SS count increases, there is a reduction in SM counts. How to cite this article Thimmegowda U, Belagatta V, Chikkanarasaiah N, et al. Identification and Correlation of Streptococcus mutans and Streptococcus sanguinis in Caries-active and Caries-free Children: A PCR Study. Int J Clin Pediatr Dent 2023;16(1):9-15.
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Affiliation(s)
- Umapathy Thimmegowda
- Department of Pediatric and Preventive Dentistry, RajaRajeswari Dental College and Hospital, Bengaluru, Karnataka, India
| | - Vatsala Belagatta
- Department of Pediatric and Preventive Dentistry, RajaRajeswari Dental College and Hospital, Bengaluru, Karnataka, India
| | - Nagarathna Chikkanarasaiah
- Department of Pediatric and Preventive Dentistry, RajaRajeswari Dental College and Hospital, Bengaluru, Karnataka, India
| | - Sivaprasad Bilichodmath
- Department of Pediatric and Preventive Dentistry, RajaRajeswari Dental College and Hospital, Bengaluru, Karnataka, India
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Cui G, Li P, Wu R, Lin H. Streptococcus mutans membrane vesicles inhibit the biofilm formation of Streptococcus gordonii and Streptococcus sanguinis. AMB Express 2022; 12:154. [PMID: 36508003 PMCID: PMC9743899 DOI: 10.1186/s13568-022-01499-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 12/02/2022] [Indexed: 12/14/2022] Open
Abstract
Streptococcus mutans, whose main virulence factor is glucosyltransferase (Gtf), has a substantial impact on the development of dental caries. S. mutans membrane vesicles (MVs), which are rich in Gtfs, have been shown to affect biofilm formation of other microorganisms. Streptococcus gordonii and Streptococcus sanguinis are initial colonizers of tooth surfaces, which provide attachment sites for subsequent microorganisms and are crucial in the development of oral biofilms. S. mutans and S. gordonii, as well as S. mutans and S. sanguinis, have a complex competitive and cooperative relationship, but it is unclear whether S. mutans MVs play a role in these interspecific interactions. Therefore, we co-cultured S. mutans MVs, having or lacking Gtfs, with S. gordonii and S. sanguinis. Our results showed that S. mutans MVs inhibited biofilm formation of S. gordonii and S. sanguinis but did not affect their planktonic growth; contrastingly, S. mutans ΔgtfBC mutant MVs had little effect on both their growth and biofilm formation. Additionally, there were fewer and more dispersed bacteria in the biofilms of the S. mutans MV-treated group than that in the control group. Furthermore, the expression levels of the biofilm-related virulence factors GtfG, GtfP, and SpxB in S. gordonii and S. sanguinis were significantly downregulated in response to S. mutans MVs. In conclusion, the results of our study showed that S. mutans MVs inhibited biofilm formation of S. gordonii and S. sanguinis, revealing an important role for MVs in interspecific interactions.
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Affiliation(s)
- Guxin Cui
- grid.12981.330000 0001 2360 039XHospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XGuangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Pengpeng Li
- grid.12981.330000 0001 2360 039XHospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XGuangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Ruixue Wu
- grid.12981.330000 0001 2360 039XHospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XGuangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Huancai Lin
- grid.12981.330000 0001 2360 039XHospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XGuangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
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Kim D, Ito T, Hara A, Li Y, Kreth J, Koo H. Antagonistic interactions by a high H 2 O 2 -producing commensal streptococci modulate caries development by Streptococcus mutans. Mol Oral Microbiol 2022; 37:244-255. [PMID: 36156446 DOI: 10.1111/omi.12394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/06/2022] [Accepted: 09/18/2022] [Indexed: 11/29/2022]
Abstract
Dental caries (tooth-decay) is caused by biofilms harboring polymicrobial communities on teeth that leads to the onset of localized areas of enamel demineralization. Streptococcus mutans has been clinically associated with severe caries in childhood. Although commensal bacteria can combat S. mutans using self-generated antimicrobials such as hydrogen peroxide (H2 O2 ), constant sugar-rich diet consumption disrupts microbial homeostasis shifting towards cariogenic community. Recently, Streptococcus oralis subsp. tigurinus strain J22, an oral isolate, was identified as a uniquely potent H2 O2 producer. Here, we assess whether a high H2 O2 -producing commensal streptococci can modulate the spatial organization and virulence of S. mutans within biofilms. Using an experimental biofilm model, we find that the presence of S. oralis J22 can effectively inhibit the clustering, accumulation, and spatial organization of S. mutans on ex vivo human tooth surface, resulting in significant reduction of enamel demineralization. Notably, the generation of H2 O2 via pyruvate oxidase (SpxB) from S. oralis J22 is not repressed by sugars (a common repressor in other mitis group streptococci), resulting in enhanced inhibition of S. mutans growth (vs. S. gordonii). We further investigate its impact on biofilm virulence using an in vivo rodent caries model under sugar-rich diet. Co-infection of S. mutans with S. oralis results in reduced caries development compared to either species infected alone, whereas co-infection with S. gordonii has negligible effects, suggesting that the presence of an efficient, high H2 O2 -producer can disrupt S. mutans virulence. This work demonstrates that oral isolates with unusual high H2 O2 production may be capable of modulating biofilm cariogenicity in vivo. The findings also highlight the importance of bacterial antagonistic interactions within polymicrobial communities in health and in disease-causing state. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Dongyeop Kim
- Biofilm Research Laboratory, Department of Orthodontics, School of Dental Medicine, University of Pennsylvania.,Department of Preventive Dentistry, School of Dentistry, and Institute of Oral Bioscience, Jeonbuk National University
| | - Tatsuro Ito
- Biofilm Research Laboratory, Department of Orthodontics, School of Dental Medicine, University of Pennsylvania.,Department of Pediatric Dentistry, School of Dentistry at Matsudo, Nihon University
| | - Anderson Hara
- Department of Cariology, Operative Dentistry and Dental Public Health, Oral Health Research Institute, Indiana University School of Dentistry
| | - Yong Li
- Biofilm Research Laboratory, Department of Orthodontics, School of Dental Medicine, University of Pennsylvania
| | - Jens Kreth
- Departments of Restorative Dentistry and Molecular Microbiology & Immunology, Oregon Health & Science University
| | - Hyun Koo
- Biofilm Research Laboratory, Department of Orthodontics, School of Dental Medicine, University of Pennsylvania.,Divisions of Pediatric Dentistry & Community Oral Health, School of Dental Medicine, University of Pennsylvania.,Center for Innovation & Precision Dentistry, School of Dental Medicine, School of Engineering and Applied Sciences, University of Pennsylvania
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Guo J, Zhou J, Sun Z, Wang M, Zou X, Mao H, Yan F. Enhanced photocatalytic and antibacterial activity of acridinium-grafted g-C 3N 4 with broad-spectrum light absorption for antimicrobial photocatalytic therapy. Acta Biomater 2022; 146:370-384. [PMID: 35381397 DOI: 10.1016/j.actbio.2022.03.052] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 03/25/2022] [Accepted: 03/29/2022] [Indexed: 02/09/2023]
Abstract
As a metal-free polymeric photocatalyst, graphitic carbon nitride (g-C3N4) has attracted great attention owing to its high stability and low toxicity. However, g-C3N4 suffers from low light harvesting ability which limits its applications in antimicrobial photocatalytic therapy (APCT). Herein, acridinium (ADN)-grafted g-C3N4 (ADN@g-C3N4) nanosheets are prepared via covalent grafting of ADN to g-C3N4. The obtained ADN@g-C3N4 exhibits a narrow optical band gap (2.12 eV) and a wide optical absorption spectrum (intensity a.u. > 0.30) ranging from ultraviolet to near-infrared region. Moreover, ADN@g-C3N4 would produce reactive oxygen species (ROS) under light irradiation to exert effective sterilization and biofilm elimination activities against both gram-negative and gram-positive bacteria. Molecular dynamics simulation reveals that the ADN@g-C3N4 may move toward, tile and insert the bacterial lipid bilayer membrane through strong van der Waals and electrostatic interaction, decreasing the order parameter of the lipid while increasing the conducive of ROS migration, inducing ADN@g-C3N4 with improved antimicrobial and antibiofilm performance. Moreover, ADN@g-C3N4 could efficiently eradicate oral biofilm on artificial teeth surfaces. This work may provide a broad-spectrum light-induced photocatalytic therapy for preventing and treating dental plaque diseases and artificial teeth-related infections, showing potential applications for intractable biofilm treatment applications. An acridinium-grafted g-C3N4 (ADN@g-C3N4) with a narrow band gap and broad-spectrum light absorption was synthesized. The narrow optical band gap and improved electrostatic interaction with bacterial lipid bilayer membrane of ADN@g-C3N4 strengthened the ROS generation and facilitated the diffusion of ROS to bacteria surface, leading to enhanced photocatalytic and antibacterial activity against bacteria and corresponding biofilm under light irradiation. STATEMENT OF SIGNIFICANCE: An acridinium-grafted g-C3N4 (ADN@g-C3N4) with a narrow band gap and broad-spectrum light absorption was developed as an antimicrobial photocatalytic therapy agent. The ADN@g-C3N4 exhibited enhanced photocatalytic and antibacterial activity against bacteria and corresponding biofilm under light irradiation, showing potential applications for intractable biofilm treatment.
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Park S, Lee ES, Jung HI, Kim BI. Optical detection of oral biofilm in hospitalized geriatric patients using quantitative light-induced fluorescence technology. Photodiagnosis Photodyn Ther 2022; 39:102962. [PMID: 35700910 DOI: 10.1016/j.pdpdt.2022.102962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 06/10/2022] [Accepted: 06/10/2022] [Indexed: 10/18/2022]
Abstract
Detection and removal of pathological oral biofilm are essential in hospitalized geriatric patients as the biofilm can lead to lung infection. However, as elderly patients often have cognitive and physical impairments, general oral examination is complicated and detection of pathological biofilms is challenging. Quantitative light-induced fluorescence (QLF) technology, which is currently actively used to detect bacterial structures in the oral cavity, is used to detect dental biofilm and to identify various oral bacterial infections. We confirmed the applicability of QLF technology to oral hygiene assessment and evaluation of hospitalized geriatric patients using the QLF technology to detect and remove the pathological oral biofilm in a hospitalized geriatric patient. The oral biofilm attached to the oral mucosa was difficult to observe with the naked eye. However, it was detected with red fluorescence on QLF images, which helped us observe the to detect pathological oral biofilm and evaluate the effectiveness of oral hygiene care (OHC). After OHC, the strong red fluorescence expressed in the oral mucosa was no longer observed. This change in the clinical aspect of red fluorescence suggests that QLF can be used to detect pathological oral biofilm accumulated on the oral mucous membrane and evaluate the effectiveness of OHC in hospitalized patients with extremely poor oral hygiene.
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Affiliation(s)
- Sol Park
- Department of Preventive Dentistry & Public Oral Health, BK21 FOUR Project, Yonsei University College of Dentistry, 50 Yonsei-ro, Seodaemun-Gu, Seoul 03722, Republic of Korea
| | - Eun-Song Lee
- Department of Preventive Dentistry & Public Oral Health, BK21 FOUR Project, Yonsei University College of Dentistry, 50 Yonsei-ro, Seodaemun-Gu, Seoul 03722, Republic of Korea
| | - Hoi-In Jung
- Department of Preventive Dentistry & Public Oral Health, BK21 FOUR Project, Yonsei University College of Dentistry, 50 Yonsei-ro, Seodaemun-Gu, Seoul 03722, Republic of Korea; Innovation Research and Support Center for Dental Science, Yonsei University Dental Hospital, 50 Yonsei-ro, Seodaemun-Gu, Seoul 03722, Republic of Korea.
| | - Baek-Il Kim
- Department of Preventive Dentistry & Public Oral Health, BK21 FOUR Project, Yonsei University College of Dentistry, 50 Yonsei-ro, Seodaemun-Gu, Seoul 03722, Republic of Korea; Innovation Research and Support Center for Dental Science, Yonsei University Dental Hospital, 50 Yonsei-ro, Seodaemun-Gu, Seoul 03722, Republic of Korea.
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Wang Y, Zhang Y, Pan T, Lin H, Zhou Y. Metabolic differences of the oral microbiome related to dental caries - A pilot study. Arch Oral Biol 2022; 141:105471. [PMID: 35689993 DOI: 10.1016/j.archoralbio.2022.105471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 05/31/2022] [Accepted: 06/02/2022] [Indexed: 11/16/2022]
Abstract
OBJECTIVE We aimed to investigate the composition and functions discrepancy of supragingival plaque associated with active deciduous teeth caries in mixed dentitions. DESIGN Thirty-three subjects with mixed dentition participated in this study. Children with deciduous teeth caries (dt ≥ 3) were recruited to the caries group, whereas children without deciduous teeth caries (dt = 0) were recruited to the caries-free group. Plaque were collected from deciduous teeth surface and permanent teeth surface respectively. A total of 66 samples of dental plaque were collected and conserved. Illumina 16S rRNA sequencing and diversity analysis were performed for microbiome. Untargeted liquid chromatograph-mass (LC-MS) and partial least squares discriminant analysis were performed for metabolome. RESULTS A dominant microbiome of 8 phyla and 22 genera were detected. The alpha diversity indices did not detect differences between the caries and caries-free groups (p > 0.05). Beta diversity analysis showed that the microbiota composition was similar between subgroups. Comparative analysis at genus level did not detect difference between caries and caries-free subgroups. The metabolomics analysis yielded 419 biochemical metabolites, 56 of which were related to caries status. Metabolites in glucose metabolism and byproducts of oxidative stress were identified as related to dental caries in mixed dentition. Dominant bacteria are positively correlated with metabolites, such as Streptococcus and organic acids. CONCLUSIONS The upgrade of glucose metabolism and oxidative stress was observed in caries status. Functions discrepancy of oral microbiome may be more pronounced than the composition of oral microbiome with active dental caries in mixed dentitions.
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Affiliation(s)
- Yinuo Wang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China; Guangdong Key Laboratory for Dental Disease Prevention and Control, Sun Yat-Sen University, Guangzhou, China.
| | - Yuwen Zhang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China; Guangdong Key Laboratory for Dental Disease Prevention and Control, Sun Yat-Sen University, Guangzhou, China.
| | - Ting Pan
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China; Guangdong Key Laboratory for Dental Disease Prevention and Control, Sun Yat-Sen University, Guangzhou, China.
| | - Huancai Lin
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China; Guangdong Key Laboratory for Dental Disease Prevention and Control, Sun Yat-Sen University, Guangzhou, China.
| | - Yan Zhou
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China; Guangdong Key Laboratory for Dental Disease Prevention and Control, Sun Yat-Sen University, Guangzhou, China.
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Silvestrin LB, Garcia IM, Visioli F, Collares FM, Leitune VCB. Physicochemical and biological properties of experimental dental adhesives doped with a guanidine-based polymer: an in vitro study. Clin Oral Investig 2022; 26:3627-3636. [PMID: 35001214 DOI: 10.1007/s00784-021-04332-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 12/01/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVES The objective of this study is to formulate experimental dental adhesives with different polyhexamethylene guanidine hydrochloride concentrations (PHMGH) and evaluate their physical, chemical, and biological properties. MATERIALS AND METHODS The experimental adhesives were formulated with 0 (control, GCTRL), 0.5 (G0.5%), 1 (G1%), or 2 (G2%) wt.% into the adhesive. The adhesives were analyzed for degree of conversion (DC%), softening in solvent (ΔKHN%), ultimate tensile strength (UTS), microtensile bond strength (μTBS) immediately and after 1 year of aging, antibacterial activity, and cytotoxicity. RESULTS There were no differences among groups for DC%, ΔKHN%, and UTS (p > 0.05%). There were no differences between each PHMGH-doped adhesive compared to GCTRL in the immediate μ-TBS (p > 0.05). Adhesives with at least 1 wt.% of PHMGH presented better stability of μ-TBS. PHMGH-doped adhesives showed improved longitudinal μ-TBS compared to GCTRL (p < 0.05). Lower Streptococcus mutans biofilm formation was observed for PHMGH-doped adhesives (p < 0.05). There was lower viability of planktonic S. mutans in the media in contact with the samples when at least 1 wt.% of PHGMGH was incorporated (p < 0.05). The formulated adhesives showed no cytotoxicity against pulp cells (p > 0.05). CONCLUSIONS The adhesive with 2 wt.% of PHMGH showed the highest antibacterial activity, without affecting the physicochemical properties and cytotoxicity, besides conferring stability for the dental adhesion. CLINICAL RELEVANCE PHMGH, a positively charged polymer, conveyed antibacterial activity to dental adhesives. Furthermore, it did not negatively affect the essential physicochemical and biocompatibility properties of the adhesives. More importantly, the incorporation of PHMGH provided stability for the μ-TBS compared to the control group without this additive.
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Affiliation(s)
- Lucas Bonfanti Silvestrin
- Department of Dental Materials, School of Dentistry, Federal University of Rio Grande do Sul, Ramiro Barcelos Street, 2492, Rio Branco, Porto Alegre, RS, 90035-003, Brazil
| | - Isadora Martini Garcia
- Department of Dental Materials, School of Dentistry, Federal University of Rio Grande do Sul, Ramiro Barcelos Street, 2492, Rio Branco, Porto Alegre, RS, 90035-003, Brazil
| | - Fernanda Visioli
- Oral Pathology Departament, School of Dentistry, Federal University of Rio Grande do Sul, Rua Ramiro Barcelos, 2492, Rio Branco, Porto Alegre, RS, 90035-003, Brazil
| | - Fabrício Mezzomo Collares
- Department of Dental Materials, School of Dentistry, Federal University of Rio Grande do Sul, Ramiro Barcelos Street, 2492, Rio Branco, Porto Alegre, RS, 90035-003, Brazil
| | - Vicente Castelo Branco Leitune
- Department of Dental Materials, School of Dentistry, Federal University of Rio Grande do Sul, Ramiro Barcelos Street, 2492, Rio Branco, Porto Alegre, RS, 90035-003, Brazil.
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11
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Albeshir EG, Balhaddad AA, Mitwalli H, Wang X, Sun J, Melo MAS, Weir MD, Xu HHK. Minimally-invasive dentistry via dual-function novel bioactive low-shrinkage-stress flowable nanocomposites. Dent Mater 2021; 38:409-420. [PMID: 34973816 DOI: 10.1016/j.dental.2021.12.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 09/28/2021] [Accepted: 12/15/2021] [Indexed: 01/05/2023]
Abstract
The objectives of this in vitro study were to develop a novel low-shrinkage-stress flowable nanocomposite with antibacterial properties through the incorporation of dimethylaminohexadecyl methacrylate (DMAHDM) and nanoparticles of amorphous calcium phosphate (NACP), and investigate the mechanical and oral biofilm properties, to be used in minimally-invasive techniques. METHODS The light-cured low-shrinkage-stress flowable resin was formulated by mixing urethane dimethacrylate (UDMA) and triethylene glycol divinylbenzyl ether (TEG-DVBE) at a 1:1 mass ratio. Different mass fractions of glass, and either 5% DMAHDM or 20%NACP or both were incorporated. Paste flowability, ultimate micro tensile strength and surface roughness were evaluated. The antibacterial response of DMAHDM resin was assessed by using biofilms of human saliva-derived microcosm model. Virtuoso flowable composite was used as a control. RESULTS (45% resin+5% DMAHDM+20% NACP+30% glass) formula yielded the needed outcomes. It had flow rate within the range of ISO requirement. The micro tensile strength was (39.1 ± 4.3) MPa, similar to (40.1 ± 4.0) MPa for commercial control (p > 0.05). The surface roughness values of the novel composite (0.079 ± 0.01) µm similar to commercial composite (0.09 ± 0.02) µm (p > 0.05). Salivary microcosm biofilm colony forming unit values were reduced by 5-6 logs (p < 0.05). Biofilm metabolic activity was also substantially reduced, compared to control composite (p < 0.05). SIGNIFICANCE The novel bioactive flowable nanocomposite achieved strong antibacterial activities without compromising the mechanical properties. It is promising to be used as pit and fissure sealants, and as fillings in conservative cavities to inhibit recurrent caries and increase restoration longevity.
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Affiliation(s)
- Ebtehal G Albeshir
- Ph.D. Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; Department of Restorative Dentistry, King Abdul-Aziz Medical City, Riyadh 11426, Saudi Arabia.
| | - Abdulrahman A Balhaddad
- Ph.D. Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman bin Faisal University, Dammam 31441, Saudi Arabia.
| | - Heba Mitwalli
- Ph.D. Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; Department of Restorative Dental Science, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Xiaohong Wang
- Volpe Research Center, American Dental Association Foundation, Frederick, MD 21704, USA
| | - Jirun Sun
- The Forsyth Institute, A Harvard School of Dental Medicine Affiliate, 245 First Street, Cambridge, MA 02142, USA.
| | - Mary Ann S Melo
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA; Division of Operative Dentistry, Department of General Dentistry, University of Maryland School of Dentistry, Baltimore, MD 21201, USA.
| | - Michael D Weir
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA.
| | - Hockin H K Xu
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA; Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA; Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
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12
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Vertuan M, da Silva JF, Braga AS, de Souza BM, Magalhães AC. Effect of TiF 4/NaF and chitosan solutions on biofilm formation and prevention of dentin demineralization. Arch Oral Biol 2021; 132:105275. [PMID: 34619414 DOI: 10.1016/j.archoralbio.2021.105275] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/23/2021] [Accepted: 09/24/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVE This study evaluated the effect of experimental solutions containing TiF4/NaF and chitosan on bacterial species of microcosm biofilm and on dentin demineralization. DESIGN Microcosm biofilm was produced from human saliva mixed with McBain medium (0.2% sucrose) on bovine dentin for 5 days, under 5% CO2 and 37 °C. From the 2nd day to 5th day, the treatments were applied (1×60s/day) as following: (1) NaF (500 ppm F-, positive control); (2) TiF4 and NaF (TiF4: 190 ppm Ti4+ and 300 ppm F-; NaF: 190 ppm F-); (3) similar to 2 plus 0.5% chitosan (Ch 500 mPa.s, 75% deacetylation); (4) phosphate buffer solution (negative control); and (5) 0.5% chitosan (Ch 500 mPa.s, 75% deacetylation). CFU counting was performed for total microorganism, total streptococci, total lactobacilli and mutans streptococci. Dentin demineralization was measured by transverse microradiography-TMR. The data were compared using ANOVA/Tukey or Kruskal-Wallis/Dunn tests (p < 0.05). RESULTS No differences were found between the treatments with respect to CFU counting (p > 0.05). Dentin treated with TiF4/NaF plus chitosan solution presented the lowest demineralization compared to the negative control and pure chitosan solution. On the other hand, this experimental solution did not significantly differ from TiF4/NaF solution, being both able to significantly reduce mineral loss. CONCLUSION TiF4/NaF plus chitosan solution, at suitable pH to be clinically applicable, had no antimicrobial effect, but it was able to reduce dentin caries development under this model.
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Affiliation(s)
- Mariele Vertuan
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil.
| | - Júlia França da Silva
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil.
| | - Aline Silva Braga
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil.
| | - Beatriz Martines de Souza
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil.
| | - Ana Carolina Magalhães
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil.
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13
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Buchbender M, Fehlhofer J, Proff P, Möst T, Ries J, Hannig M, Neurath MF, Gund M, Atreya R, Kesting M. Expression of inflammatory mediators in biofilm samples and clinical association in inflammatory bowel disease patients-a preliminary study. Clin Oral Investig 2021; 26:1217-1228. [PMID: 34383142 PMCID: PMC8816497 DOI: 10.1007/s00784-021-04093-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 07/19/2021] [Indexed: 12/19/2022]
Abstract
OBJECTIVES Inflammatory bowel disease (IBD) has multiple impacts on soft and hard tissues in the oral cavity. The aim of this study was to analyze the expression of cytokines in biofilm samples from patients suffering from IBD and compare them to healthy patients. It was hypothesized that different cytokine expression levels and clinical associations might be drawn. MATERIAL AND METHODS A total of 56 biofilm samples from three different patient cohorts (group 0 = healthy, HC n = 30; group 1 = Crohn's disease, CD, n = 19; group 2 = ulcerative colitis, UC, n = 7) were examined for the expression levels of the cytokine interleukins IL-2, -6, and -10; matrix metalloproteinases 7 and 9; and surface antigens CD90/CD11a by quantitative real-time PCR and according to clinical parameters (plaque index, BOP, PD, DMFT, CAL). Relative gene expression was determined using the ∆∆CT method. RESULTS The mean BOP values (p = 0.001) and PD (p = 0.000) were significantly higher in the CD group compared to controls. Expression of IL-10 was significantly higher in the CD (p = 0.004) and UC groups (p = 0.022). Expression of MMP-7 was significantly higher in the CD group (p = 0.032). IBD patients treated with TNF inhibitors (p = 0.007) or other immunosuppressants (p = 0.014) showed significant overexpression of IL-10 compared to controls. CONCLUSION Different expression levels of IL-10 and MMP-7 were detected in plaque samples from IBD patients. As only BOP was significantly increased, we conclude that no clinical impairment of periodontal tissue occurred in IBD patients. CLINICAL RELEVANCE With the worldwide increasing incidence of IBD, it is important to obtain insights into the effects of the disease on the oral cavity. The study was registered (01.09.2020) at the German clinical trial registry (DRKS00022956). CLINICAL TRIAL REGISTRATION The study is registered at the German clinical trial registry (DRKS00022956).
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Affiliation(s)
- Mayte Buchbender
- Department of Oral and Maxillofacial Surgery, University of Erlangen- Nuremberg, Glückstrasse 11, 91054, Erlangen, Germany.
| | - Jakob Fehlhofer
- Department of Oral and Maxillofacial Surgery, University of Erlangen- Nuremberg, Glückstrasse 11, 91054, Erlangen, Germany
| | - Peter Proff
- Head of the Department of Orthodontics, University of Regensburg, Regensburg, Germany
| | - Tobias Möst
- Department of Oral and Maxillofacial Surgery, University of Erlangen- Nuremberg, Glückstrasse 11, 91054, Erlangen, Germany
| | - Jutta Ries
- Department of Oral and Maxillofacial Surgery, University of Erlangen- Nuremberg, Glückstrasse 11, 91054, Erlangen, Germany
| | - Matthias Hannig
- Head of Department of Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Homburg, Germany
| | - Markus F Neurath
- Department of Medicine, University of Erlangen-Nuremberg, Erlangen, Germany.,Deutsches Zentrum Immuntherapie DZI, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Madline Gund
- Department of Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Homburg, Germany
| | - Raja Atreya
- Department of Medicine, University of Erlangen-Nuremberg, Erlangen, Germany.,Deutsches Zentrum Immuntherapie DZI, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Marco Kesting
- Department of Oral and Maxillofacial Surgery, University of Erlangen- Nuremberg, Glückstrasse 11, 91054, Erlangen, Germany
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Jiang Q, Yu Y, Xu R, Zhang Z, Liang C, Sun H, Deng F, Yu X. The temporal shift of peri-implant microbiota during the biofilm formation and maturation in a canine model. Microb Pathog 2021; 158:105100. [PMID: 34302932 DOI: 10.1016/j.micpath.2021.105100] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 06/15/2021] [Accepted: 07/14/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVES Although the mature peri-implant biofilm composition is well studied, there is very little information on the succession of in vivo dental implant colonization. The aim of this study was to characterize the temporal changes and diversity of peri-implant supra-mucosal and sub-mucosal microbiota during the process of the plaque maturation. MATERIALS AND METHODS Dental implants (n = 25) were placed in the mandible of 3 beagle dogs. Illumina MiSeq sequencing of the hypervariable V3-V4 region of the 16S rRNA gene amplicons was used to characterize the supra/sub-mucosal microbiota in the peri-implant niches at 1day (T1), 7days (T2), 14days (T3), 21days (T4) and 28days (T5) after Phase Ⅱ surgery of the healing abutment placement. QIIME, Mothur, LEfSe and R-package were used for downstream analysis. RESULTS A total of 1184 operational taxonomic units (OTUs), assigned into 22 phyla, 264 genera and 339 species were identified. In supra-mucosal niches, the alpha parameters of shannon, sobs and chao1 displayed significant differences between T1 and other time-points. However, in sub-mucosal niches, only sobs, chao1, and ace indexes displayed significant differences between T1 and T3, and T1 and T5. Beta-diversity showed statistically significant difference between T1 and T2, T3, T4, T5 within both sub-mucosal and supra-mucosal plaque. The phyla Bacteroidetes, Proteobacteria and Firmicutes were the most dominant phyla of both sub-mucosal and supra-mucosal niches at all time-points and Firmicutes increased during the maturation of peri-implant plaque. At the genus level, Neisseria decreased significantly after T1 suggesting the establishment of an anaerobic microenvironment. A decrease of Porphyromonas during the formation of sub-mucosal microbial community was also detected. Co-occurrence network analysis exhibited a more complicated co-occurrence relationship of bacterial species in the sub-mucosal niches. Fusobacterium nucleatum, Filifactor villosus, and some other species may play a crucial role in biofilm maturation. CONCLUSIONS The present results suggested that the development of peri-implant biofilm followed a similar pattern to dental plaque formation. Sub-mucosal biofilm may go through a more complicated procedure of maturation than supra-mucosal biofilm.
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Affiliation(s)
- Qiming Jiang
- Department of Oral Implantology, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China
| | - Yi Yu
- Department of Oral Implantology, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China
| | - Ruogu Xu
- Department of Oral Implantology, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China
| | - Zhengchuan Zhang
- Department of Oral Implantology, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China
| | - Chaoan Liang
- Department of Oral Implantology, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China
| | - Hanyu Sun
- Department of Oral Implantology, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China
| | - Feilong Deng
- Department of Oral Implantology, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China.
| | - Xiaolin Yu
- Department of Oral Implantology, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China.
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15
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Adam FA, Mohd N, Rani H, Baharin B, Mohd Yusof MYP. Salvadora persica L. chewing stick and standard toothbrush as anti-plaque and anti-gingivitis tool: A systematic review and meta-analysis. J Ethnopharmacol 2021; 274:113882. [PMID: 33513418 DOI: 10.1016/j.jep.2021.113882] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/08/2021] [Accepted: 01/21/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Salvadora persica L. chewing stick, commonly known as miswak is still being used as an oral hygiene tool for plaque control and prevention against gingivitis. Various studies have reported on the therapeutics and prophylactic effects particularly on periodontal disease. This review aimed to evaluate the effectiveness of S. persica chewing stick compared to the standard toothbrush for anti-plaque and anti-gingivitis. MATERIAL AND METHODS A PRISMA-compliant systematic search of literature was done from the MEDLINE, CENTRAL, Science Direct, PubMed and Google Scholar. Literature that fulfilled eligibility criteria was identified. Data measuring plaque score and bleeding score were extracted. Qualitative and random-effects meta-analyses were conducted. RESULTS From 1736 titles and abstracts screened, eight articles were utilized for qualitative analysis, while five were selected for meta-analysis. The pooled effect estimates of SMD and 95% CI were -0.07 [-0.60 to 0.45] with an χ2 statistic of 0.32 (p = 0.0001), I2 = 80% as anti-plaque function and 95% CI were -2.07 [-4.05 to -0.10] with an χ2 statistic of 1.67 (p = 0.02), I2 = 82%. CONCLUSION S. persica chewing stick is a tool that could control plaque, comparable to a standard toothbrush. Further, it has a better anti-gingivitis effect and can be used as an alternative.
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Affiliation(s)
- Fara Azwin Adam
- Unit of Periodontology, Department of Restorative Dentistry, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia; Center for Periodontology Studies, Faculty of Dentistry Universiti Teknologi MARA, 47000, Sungai Buloh, Selangor, Malaysia
| | - Nurulhuda Mohd
- Unit of Periodontology, Department of Restorative Dentistry, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia.
| | - Haslina Rani
- Department of Family Oral Health, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
| | - Badiah Baharin
- Unit of Periodontology, Department of Restorative Dentistry, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
| | - Mohd Yusmiaidil Putera Mohd Yusof
- Centre for Oral and Maxillofacial Diagnostics and Medicine Studies, Faculty of Dentistry Universiti Teknologi MARA, 47000, Sungai Buloh, Selangor, Malaysia; Institute of Pathology, Laboratory and Forensic Medicine (I-PPerForM), Universiti Teknologi MARA, 47000, Sungai Buloh, Selangor, Malaysia
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Vertuan M, Machado PF, de Souza BM, Braga AS, Magalhães AC. Effect of TiF 4/NaF and chitosan solutions on the development of enamel caries under a microcosm biofilm model. J Dent 2021; 111:103732. [PMID: 34174348 DOI: 10.1016/j.jdent.2021.103732] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 06/12/2021] [Accepted: 06/15/2021] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES To evaluate the effect of experimental solutions containing TiF4/NaF and chitosan on bacterial species and on enamel caries prevention. METHODS Microcosm biofilm was produced from human saliva mixed with McBain saliva (0.2% sucrose) on bovine enamel for five days, under 5% CO2 and 37 °C. From the second day until the end, the treatments were applied (1 × 60 s/day): (1) NaF (500 ppm F-, positive control); (2) TiF4 and NaF (TiF4: 190 ppm Ti4+ and 300 ppm F-; NaF: 190 ppm F-); (3) similar to 2 plus 0.5% chitosan (Ch 500 mPas, 75% deacetylation); (4) phosphate buffer solution (negative control); and (5) 0.5% chitosan (Ch 500 mPas, 75% deacetylation). CFU counting was performed for total microorganism, total streptococcus, total lactobacillus and Streptococcus mutans. Enamel demineralization was measured by transverse microradiography-TMR. The data were compared using ANOVA/Tukey or Kruskal-Wallis/Dunn tests (p < .050). RESULTS No differences were found between the treatments with respect to CFU counting (ANOVA, p > .050). Enamel treated with TiF4/NaF plus chitosan solution presented the lowest demineralization compared to the negative control and pure chitosan solution. On the other hand, this experimental solution did not significantly differ from TiF4/NaF and NaF solutions, being all of them able to significantly reduce mineral loss (50-74%), but only TiF4/NaF plus chitosan reduced lesion depth (55%) compared to the negative control (p = .001). CONCLUSION TiF4/NaF plus chitosan solution had no antimicrobial effect, but it was able to reduce enamel caries development in 79% compared to control under this model. CLINICAL SIGNIFICANCE This study showed that TiF4/NaF plus chitosan solution had no antimicrobial effect, but it was able to reduce enamel caries development under a microcosm biofilm model.
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Affiliation(s)
- Mariele Vertuan
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Al. Octávio Pinheiro Brisolla, 9-75, Bauru-SP, Zip code: 17012-901, Brazil.
| | - Paula Fontana Machado
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Al. Octávio Pinheiro Brisolla, 9-75, Bauru-SP, Zip code: 17012-901, Brazil.
| | - Beatriz Martines de Souza
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Al. Octávio Pinheiro Brisolla, 9-75, Bauru-SP, Zip code: 17012-901, Brazil
| | - Aline Silva Braga
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Al. Octávio Pinheiro Brisolla, 9-75, Bauru-SP, Zip code: 17012-901, Brazil
| | - Ana Carolina Magalhães
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Al. Octávio Pinheiro Brisolla, 9-75, Bauru-SP, Zip code: 17012-901, Brazil.
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Hottmann I, Borisova M, Schäffer C, Mayer C. Peptidoglycan Salvage Enables the Periodontal Pathogen Tannerella forsythia to Survive within the Oral Microbial Community. Microb Physiol 2021; 31:123-134. [PMID: 34107471 DOI: 10.1159/000516751] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 04/22/2021] [Indexed: 11/19/2022]
Abstract
Tannerella forsythia is an anaerobic, fusiform Gram-negative oral pathogen strongly associated with periodontitis, a multibacterial inflammatory disease that leads to the destruction of the teeth-supporting tissue, ultimately causing tooth loss. To survive in the oral habitat, T. forsythia depends on cohabiting bacteria for the provision of nutrients. For axenic growth under laboratory conditions, it specifically relies on the external supply of N-acetylmuramic acid (MurNAc), which is an essential constituent of the peptidoglycan (PGN) of bacterial cell walls. T. forsythia comprises a typical Gram-negative PGN; however, as evidenced by genome sequence analysis, the organism lacks common enzymes required for the de novo synthesis of precursors of PGN, which rationalizes its MurNAc auxotrophy. Only recently insights were obtained into how T. forsythia gains access to MurNAc in its oral habitat, enabling synthesis of the own PGN cell wall. This report summarizes T. forsythia's strategies to survive in the oral habitat by means of PGN salvage pathways, including recovery of exogenous MurNAc and PGN-derived fragments but also polymeric PGN, which are all derived from cohabiting bacteria either via cell wall turnover or decay of cells. Salvage of polymeric PGN presumably requires the removal of peptides from PGN by an unknown amidase, concomitantly with the translocation of the polymer across the outer membrane. Two recently identified exo-lytic N-acetylmuramidases (Tf_NamZ1 and Tf_NamZ2) specifically cleave the peptide-free, exogenous (nutrition source) PGN in the periplasm and release the MurNAc and disaccharide substrates for the transporters Tf_MurT and Tf_AmpG, respectively, whereas the peptide-containing, endogenous (the self-cell wall) PGN stays unattached. This review also outlines how T. forsythia synthesises the PGN precursors UDP-MurNAc and UDP-N-acetylglucosamine (UDP-GlcNAc), involving homologs of the Pseudomonas sp. recycling enzymes AmgK/MurU and a monofunctional uridylyl transferase (named Tf_GlmU*), respectively.
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Affiliation(s)
- Isabel Hottmann
- Interfaculty Institute of Microbiology and Infection Medicine, Organismic Interactions/Glycobiology, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - Marina Borisova
- Interfaculty Institute of Microbiology and Infection Medicine, Organismic Interactions/Glycobiology, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - Christina Schäffer
- Department of NanoBiotechnology, NanoGlycobiology Unit, Universität für Bodenkultur Wien, Vienna, Austria
| | - Christoph Mayer
- Interfaculty Institute of Microbiology and Infection Medicine, Organismic Interactions/Glycobiology, Eberhard Karls Universität Tübingen, Tübingen, Germany
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Hihara H, Tagaino R, Washio J, Laosuwan K, Wicaksono DP, Izumita K, Koide R, Takahashi N, Sasaki K. Effectiveness and safety of a new dental plaque removal device utilizing micro mist spray for removing oral biofilm in vitro. BMC Oral Health 2021; 21:286. [PMID: 34088301 PMCID: PMC8176685 DOI: 10.1186/s12903-021-01647-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 05/25/2021] [Indexed: 11/25/2022] Open
Abstract
Background Removal of oral biofilm from the oral mucosa is essential for preventing risk of respiratory and gastrointestinal infection in elderly people. Currently, no device is available which can remove oral biofilm from oral mucosa effectively and safely. Therefore, the effectiveness and safety of the Micro Scale Mist UNIT (MSM-UNIT), a newly developed dental plaque removal device utilizing high speed sprays of fine water droplets, were evaluated for biofilm removal, including the rate and surface roughness for simulated tooth surface and mucous membrane. Methods Simulated tooth and oral mucosa coated with an artificial biofilm of Streptococcus mutans were used for evaluation of effectiveness, with uncoated substrates as the controls. The MSM-UNIT and a conventional air ablation device were operated under recommended instructions. The effectiveness was evaluated from the rate of removal of the biofilm, and the safety was evaluated from the damage observed by scanning electron microscope and surface roughness. Results The biofilm removal rate of the MSM-UNIT was significantly higher than that of AIRFLOW. Little damage was observed in the area treated by the MSM-UNIT. The surface roughness of the MSM-UNIT treated area on simulated tooth surface and oral mucosa showed no significant difference to the control area. In contrast, cracks and powder were observed in the area treated by AIRFLOW. In particular, the surface roughness of the AIRFLOW treated area for Toughsilon was significantly larger than that of the control. Conclusions The MSM-UNIT could be used safely and effectively for removing biofilm not only on simulated tooth surfaces but also simulated mucous membrane. The MSM-UNIT has no harmful effect on teeth or oral mucosa, and may be used for comprehensive oral care for patients during nursing care and the perioperative period.
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Affiliation(s)
- Hiroki Hihara
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan.
| | - Ryo Tagaino
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Jumpei Washio
- Division of Oral Ecology and Biochemistry, Tohoku University Graduate School of Dentistry, Sendai, Miyagi, Japan
| | - Kittipong Laosuwan
- Department of Oral Biology and Oral Diagnostic Sciences, Faculty of Dentistry, Chiang Mai University, T. Suthep, A. Muang, Chiang Mai, 50200, Thailand
| | - Dimas Prasetianto Wicaksono
- Faculty of Dental Medicine, Department of Pediatric Dentistry, Universitas Airlangga, St. Mayjen Prof. Dr. Moestopo No. 47, Surabaya, 60132, Indonesia
| | - Kuniyuki Izumita
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Rie Koide
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Nobuhiro Takahashi
- Division of Oral Ecology and Biochemistry, Tohoku University Graduate School of Dentistry, Sendai, Miyagi, Japan
| | - Keiichi Sasaki
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
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Chathoth K, Martin B, Bonnaure-Mallet M, Baysse C. Method for screening antimicrobial gels against multi-species oral biofilms. J Microbiol Methods 2021; 187:106253. [PMID: 34087262 DOI: 10.1016/j.mimet.2021.106253] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/25/2021] [Accepted: 05/25/2021] [Indexed: 11/29/2022]
Abstract
We described a microtiter plate-based method that was effectively tailored for testing gel formulations against oral multispecies biofilms established on peg-lids. This method lifts the limitations imposed mainly by the anaerobic nature of the targeted bacterial species and the viscous properties of the targeted treatments.
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Affiliation(s)
- Kanchana Chathoth
- University of Rennes 1, NUMECAN INSERM U1241, CIMIAD, F-35043 Rennes, France
| | - Bénédicte Martin
- University of Rennes 1, NUMECAN INSERM U1241, CIMIAD, F-35043 Rennes, France
| | - Martine Bonnaure-Mallet
- University of Rennes 1, NUMECAN INSERM U1241, CIMIAD, F-35043 Rennes, France; CHU Pontchaillou, Rennes, France
| | - Christine Baysse
- University of Rennes 1, NUMECAN INSERM U1241, CIMIAD, F-35043 Rennes, France.
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Mothé D, de Oliveira K, Rotti A, Román-Carrión JL, Bertolino LC, Krepsky N, Avilla L. The micro from mega: Dental calculus description and the first record of fossilized oral bacteria from an extinct proboscidean. Int J Paleopathol 2021; 33:55-60. [PMID: 33721688 DOI: 10.1016/j.ijpp.2021.02.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 02/15/2021] [Accepted: 02/28/2021] [Indexed: 06/12/2023]
Abstract
OBJECTIVE This study explores the chemical composition and surface aspects of fossilized dental calculus from the South American Quaternary proboscidean Notiomastodon platensis and the first record of fossilized oral bacteria from extinct megafauna. MATERIALS Blocks of dental calculus removed from the third molar of five specimens of Notiomastodon platensis collected from Brazil, Argentina, and Ecuador. METHODS We analyzed five samples of dental calculus by SEM and SEM-EDS, following a rigid protocol to avoid bacterial contamination. RESULTS The dental calculus surface is homogeneous, porous, with various crystals, and composed mainly by oxygen and calcium. One sample revealed a well-preserved mineralized biofilm, with several rods and cocci bacteria. CONCLUSIONS This is the first fossilized record of oral bacterial communities associated with extinct proboscideans. SIGNIFICANCE This record confirms the parasitism between oral bacteria and Notiomastodon platensis and will enable the study of paleogenomic aspects of oral microbiota of proboscideans. LIMITATIONS Fossilization conditions of proboscidean teeth with dental calculus are variable among specimens. Although rare, the preservation of oral bacteria is expected because of the oral biofilm composition.
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Affiliation(s)
- Dimila Mothé
- Laboratório de Mastozoologia, Departamento de Zoologia, Universidade Federal do Estado do Rio de Janeiro, Av. Pasteur, 458, sala 501, Urca, 22290-255, Rio de Janeiro, Brazil; Programa de Pos-graduação em Biodiversidade e Biologia Evolutiva, Universidade Federal do Rio de Janeiro, Interbloco B/C, Centro de Ciências da Saúde, Av. Carlos Chagas Filho, 373, Cidade Universitaria, Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Karoliny de Oliveira
- Laboratório de Mastozoologia, Departamento de Zoologia, Universidade Federal do Estado do Rio de Janeiro, Av. Pasteur, 458, sala 501, Urca, 22290-255, Rio de Janeiro, Brazil; Programa de Pos-graduação em Biodiversidade e Biologia Evolutiva, Universidade Federal do Rio de Janeiro, Interbloco B/C, Centro de Ciências da Saúde, Av. Carlos Chagas Filho, 373, Cidade Universitaria, Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Alline Rotti
- Laboratório de Mastozoologia, Departamento de Zoologia, Universidade Federal do Estado do Rio de Janeiro, Av. Pasteur, 458, sala 501, Urca, 22290-255, Rio de Janeiro, Brazil; Programa de Pos-graduação em Biodiversidade e Biologia Evolutiva, Universidade Federal do Rio de Janeiro, Interbloco B/C, Centro de Ciências da Saúde, Av. Carlos Chagas Filho, 373, Cidade Universitaria, Rio de Janeiro, Rio de Janeiro, Brazil.
| | - José Luis Román-Carrión
- Departamento de Biología, Facultad de Ciencias, Escuela Politécnica Nacional, Ladrón de Guevara, E11-256, Quito, Ecuador.
| | - Luiz Carlos Bertolino
- Centro de Tecnologia Mineral, Coordenação de Análise Mineral, Av. Pedro Calmon, 900, Cidade Universitaria, 21941908, Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Natascha Krepsky
- Laboratório de Microbiologia das Águas, Ciências do Ambiente, Universidade Federal do Estado do Rio de Janeiro, Av. Pasteur, 458, sala 310, Urca, 22290-255, Rio de Janeiro, Brazil; Programa de Pós-Graduação em Ciências Biológicas (Biodiversidade Neotropical), Universidade Federal do Estado do Rio de Janeiro, CCET/IBIO, Av. Pasteur 458, Urca, 22290-255, Rio de Janeiro, Brazil.
| | - Leonardo Avilla
- Laboratório de Mastozoologia, Departamento de Zoologia, Universidade Federal do Estado do Rio de Janeiro, Av. Pasteur, 458, sala 501, Urca, 22290-255, Rio de Janeiro, Brazil; Programa de Pos-graduação em Biodiversidade e Biologia Evolutiva, Universidade Federal do Rio de Janeiro, Interbloco B/C, Centro de Ciências da Saúde, Av. Carlos Chagas Filho, 373, Cidade Universitaria, Rio de Janeiro, Rio de Janeiro, Brazil; Programa de Pós-Graduação em Ciências Biológicas (Biodiversidade Neotropical), Universidade Federal do Estado do Rio de Janeiro, CCET/IBIO, Av. Pasteur 458, Urca, 22290-255, Rio de Janeiro, Brazil.
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Braga AS, de Melo FPDSR, Saldanha LL, Dokkedal AL, Meissner T, Bemmann M, Schulz-Kornas E, Haak R, Abdelbary MMH, Conrads G, Magalhães AC, Esteves-Oliveira M. The Effect of Solutions Containing Extracts of Vochysia tucanorum Mart., Myrcia bellaCambess., Matricaria chamomilla L. and Malva sylvestris L. on Cariogenic Bacterial Species and Enamel Caries Development. Caries Res 2021; 55:193-204. [PMID: 34000728 DOI: 10.1159/000515234] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 02/14/2021] [Indexed: 11/19/2022] Open
Abstract
This study evaluated the effect of experimental solutions containing plant extracts on bacterial species and enamel caries prevention. Microcosm biofilm was produced from human saliva mixed with McBain saliva (0.2% sucrose) on bovine enamel for 5 days (3 days under anaerobiosis and 2 days under aerobiosis) at 37°C. From the 2nd day, the following treatments were applied (1 × 60 s/day): Vochysia tucanorum (10 mg/mL); Myrcia bella (5 mg/mL); Matricaria chamomilla (80 mg/mL); Malva sylvestris, fluoride, and xylitol (Malvatricin Plus®); 0.12% chlorhexidine (CHX, PerioGard®); and PBS (negative control). The medium pH was measured. Quantitative polymerase chain reaction was performed for the detection of Streptococcus mutans and Lactobacillus spp. Enamel demineralization was measured by spectral-domain optical coherence tomography. The data were compared by means of the Kruskal-Wallis/Dunn, two-way ANOVA/Bonferroni, and ANOVA/Tukey tests (p < 0.05). The pH decreased after sucrose exposure; only CHX reestablished pH >5.5 by the last day. CHX also eliminated Lactobacillusspp., but the other treatments did not differ significantly from PBS. Malvatricin Plus® and CHX eliminated S. mutans, but the other treatments did not differ from PBS. Similar results were seen concerning the reduction of lesion depth and reflectivity. The experimental natural-extract solutions were ineffective against cariogenic bacteria and in preventing the development of enamel caries.
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Affiliation(s)
- Aline Silva Braga
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | | | - Luiz Leonardo Saldanha
- Department of Biological Sciences, School of Science, São Paulo State University (UNESP), Bauru, Brazil
| | - Anne Lígia Dokkedal
- Department of Biological Sciences, School of Science, São Paulo State University (UNESP), Bauru, Brazil
| | - Tobias Meissner
- Department of Cariology, Endodontology, and Periodontology, University of Leipzig, Leipzig, Germany
| | - Maximilian Bemmann
- Department of Cariology, Endodontology, and Periodontology, University of Leipzig, Leipzig, Germany
| | - Ellen Schulz-Kornas
- Department of Cariology, Endodontology, and Periodontology, University of Leipzig, Leipzig, Germany
| | - Rainer Haak
- Department of Cariology, Endodontology, and Periodontology, University of Leipzig, Leipzig, Germany
| | - Mohamed Mostafa Hefny Abdelbary
- Division of Oral Microbiology and Immunology, Department of Operative and Preventive Dentistry and Periodontology, RWTH Aachen University Hospital, Aachen, Germany
| | - Georg Conrads
- Division of Oral Microbiology and Immunology, Department of Operative and Preventive Dentistry and Periodontology, RWTH Aachen University Hospital, Aachen, Germany
| | - Ana Carolina Magalhães
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Marcella Esteves-Oliveira
- Department of Cariology, Endodontology, and Periodontology, University of Leipzig, Leipzig, Germany.,Department of Restorative, Preventive & Pediatric Dentistry, University of Bern, Bern, Switzerland
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Zafar MS, Ullah R. PHENOLIC COMPOUND-DERIVED NATURAL ANTIMICROBIALS ARE LESS EFFECTIVE IN DENTAL BIOFILM CONTROL COMPARED TO CHLORHEXIDINE. J Evid Based Dent Pract 2021; 21:101576. [PMID: 34391562 DOI: 10.1016/j.jebdp.2021.101576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION Efficacy of natural antimicrobials derived from phenolic compounds in the control of biofilm in children and adolescents compared to synthetic antimicrobials: A systematic review and meta-analysis. Martins ML, Ribeiro-Lages MB, Masterson D, Magno MB, Cavalcanti YW, Maia LC, Fonseca-Gonçalves A. Arch Oral Biol 2020;118:104844. SOURCE OF FUNDING Government. This study was financially supported by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Brazil (CAPES) through the grant number 001. TYPE OF STUDY/DESIGN Systematic review with meta-analysis of data.
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Kommerein N, Weigel AJ, Stiesch M, Doll K. Plant-based oral care product exhibits antibacterial effects on different stages of oral multispecies biofilm development in vitro. BMC Oral Health 2021; 21:170. [PMID: 33794846 PMCID: PMC8015205 DOI: 10.1186/s12903-021-01504-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 03/09/2021] [Indexed: 11/23/2022] Open
Abstract
Background Excessive biofilm formation on surfaces in the oral cavity is amongst the main reasons for severe infection development like periodontitis and peri-implantitis. Mechanical biofilm removal as well as the use of adjuvant antiseptics supports the prevention of pathogenic biofilm formation. Recently, the antibacterial effect of the oral care product REPHA-OS®, based on medicinal plant extracts and essential oils, has been demonstrated on oral pathogens grown on agar plates. In the present study, the effectiveness of the product on medical relevant oral biofilm development should be demonstrated for the first time. Methods An established in vitro oral multispecies biofilm, composed of Streptococcus oralis, Actinomyces naeslundii, Veillonella dispar and Porphyromonas gingivalis, was used to analyze the antibacterial effect of different REPHA-OS® concentrations on planktonic bacteria, biofilm formation and mature biofilms. It was quantified using metabolic activity assays and live/dead fluorescence staining combined with three-dimensional confocal laser-scanning microscopy. Additionally, effects on species distribution inside the biofilm were assessed by means of quantitative real-time PCR. Results REPHA-OS® showed statistically significant antimicrobial effects on all stages of biofilm development: a minimal inhibitory concentration of 5% could be detected for both, for planktonic bacteria and for biofilm formation. Interestingly, only a slightly higher concentration of 10% was necessary to completely kill all bacteria in mature biofilms also. In contrast, an influence on the biofilm matrix or the species distribution could not be observed. The effect could be attributed to the herbal ingredients, not to the contained ethanol. Conclusion The strong antibacterial effect of REPHA-OS® on different stages of oral biofilm development strengthens its application as an alternative adjuvant in oral care therapies. Supplementary Information The online version contains supplementary material available at 10.1186/s12903-021-01504-4.
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Affiliation(s)
- Nadine Kommerein
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany. .,Department of Prosthetic Dentistry and Biomedical Materials Science, Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625, Hannover, Germany.
| | - Almut Johanna Weigel
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.,Department of Prosthetic Dentistry and Biomedical Materials Science, Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625, Hannover, Germany
| | - Meike Stiesch
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.,Department of Prosthetic Dentistry and Biomedical Materials Science, Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625, Hannover, Germany
| | - Katharina Doll
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.,Department of Prosthetic Dentistry and Biomedical Materials Science, Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625, Hannover, Germany
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Sionov RV, Tsavdaridou D, Aqawi M, Zaks B, Steinberg D, Shalish M. Tooth mousse containing casein phosphopeptide-amorphous calcium phosphate prevents biofilm formation of Streptococcus mutans. BMC Oral Health 2021; 21:136. [PMID: 33740976 PMCID: PMC7980609 DOI: 10.1186/s12903-021-01502-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 03/08/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Streptococcus mutans is a common cariogenic bacterium in the oral cavity involved in plaque formation. Casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) has been introduced into tooth mousse to encourage remineralization of dental enamel. The aim of this research was to study the effect of tooth mousse containing CPP-ACP (GC Tooth Mousse®) or CPP-ACP with 0.2% fluoride (CPP-ACPF; GC Tooth Mousse Plus®; GCP) on S. mutans planktonic growth and biofilm formation. METHODS S. mutans was cultivated in the presence of different dilutions of the tooth mousse containing CPP-ACP or CPP-ACPF, and the planktonic growth was determined by ATP viability assay and counting colony-forming units (CFUs). The resulting biofilms were examined by crystal violet staining, MTT metabolic assay, confocal laser scanning microscopy (CLSM), and scanning electron microscope (SEM). RESULTS The CPP-ACP tooth mousse (GC) at a dilution of 5-50 mg/ml (0.5-5%) did not inhibit planktonic growth, and even increased the ATP content and the number of viable bacteria after a 24 h incubation. The same was observed for the CPP-ACPF tooth mousse (GCP), except for the higher concentrations (25 and 50 mg/ml) that led to a drop in the bacterial count. Importantly, both compounds significantly decreased S. mutans biofilm formation at dilutions as low as 1.5-3 mg/ml. 12.5 mg/ml GC and 6.25 mg/ml GCP inhibited biofilm formation by 90% after 4 h. After 24 h, the MBIC90 was 6.25 mg/ml for both. CLSM images confirmed the strong inhibitory effect GC and GCP had on biofilm formation when using 5 mg/ml tooth mousse. SEM images of those bacteria that managed to form biofilm in the presence of 5 mg/ml tooth mousse, showed alterations in the bacterial morphology, where the streptococci appear 25-30% shorter on the average than the control bacteria. CONCLUSION Our data show that the tooth mousse containing CPP-ACP reduces biofilm formation of the cariogenic bacterium S. mutans without killing the bacteria. The use of natural substances which inhibit biofilm development without killing the bacteria, has therapeutic benefits, especially in orthodontic pediatric patients.
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Affiliation(s)
- Ronit Vogt Sionov
- The Biofilm Research Laboratory, The Faculty of Dental Medicine, The Institute of Dental Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel.
| | - Danae Tsavdaridou
- The Biofilm Research Laboratory, The Faculty of Dental Medicine, The Institute of Dental Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
- International Postgraduate Program, Department of Orthodontics, Hebrew University-Hadassah School of Dental Medicine, Jerusalem, Israel
- Department of Orthodontics, Hebrew University-Hadassah School of Dental Medicine, Jerusalem, Israel
| | - Muna Aqawi
- The Biofilm Research Laboratory, The Faculty of Dental Medicine, The Institute of Dental Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Batya Zaks
- The Biofilm Research Laboratory, The Faculty of Dental Medicine, The Institute of Dental Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Doron Steinberg
- The Biofilm Research Laboratory, The Faculty of Dental Medicine, The Institute of Dental Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Miriam Shalish
- Department of Orthodontics, Hebrew University-Hadassah School of Dental Medicine, Jerusalem, Israel
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Radaic A, Kapila YL. The oralome and its dysbiosis: New insights into oral microbiome-host interactions. Comput Struct Biotechnol J 2021; 19:1335-1360. [PMID: 33777334 PMCID: PMC7960681 DOI: 10.1016/j.csbj.2021.02.010] [Citation(s) in RCA: 137] [Impact Index Per Article: 45.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 02/13/2021] [Accepted: 02/16/2021] [Indexed: 02/06/2023] Open
Abstract
The oralome is the summary of the dynamic interactions orchestrated between the ecological community of oral microorganisms (comprised of up to approximately 1000 species of bacteria, fungi, viruses, archaea and protozoa - the oral microbiome) that live in the oral cavity and the host. These microorganisms form a complex ecosystem that thrive in the dynamic oral environment in a symbiotic relationship with the human host. However, the microbial composition is significantly affected by interspecies and host-microbial interactions, which in turn, can impact the health and disease status of the host. In this review, we discuss the composition of the oralome and inter-species and host-microbial interactions that take place in the oral cavity and examine how these interactions change from healthy (eubiotic) to disease (dysbiotic) states. We further discuss the dysbiotic signatures associated with periodontitis and caries and their sequalae, (e.g., tooth/bone loss and pulpitis), and the systemic diseases associated with these oral diseases, such as infective endocarditis, atherosclerosis, diabetes, Alzheimer's disease and head and neck/oral cancer. We then discuss current computational techniques to assess dysbiotic oral microbiome changes. Lastly, we discuss current and novel techniques for modulation of the dysbiotic oral microbiome that may help in disease prevention and treatment, including standard hygiene methods, prebiotics, probiotics, use of nano-sized drug delivery systems (nano-DDS), extracellular polymeric matrix (EPM) disruption, and host response modulators.
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Affiliation(s)
- Allan Radaic
- Kapila Laboratory, Orofacial Sciences Department, School of Dentistry, University of California, San Francisco (UCSF), San Francisco, CA, USA
| | - Yvonne L. Kapila
- Kapila Laboratory, Orofacial Sciences Department, School of Dentistry, University of California, San Francisco (UCSF), San Francisco, CA, USA
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de Castro DT, Teixeira ABV, do Nascimento C, Alves OL, de Souza Santos E, Agnelli JAM, Dos Reis AC. Comparison of oral microbiome profile of polymers modified with silver and vanadium base nanomaterial by next-generation sequencing. Odontology 2021; 109:605-614. [PMID: 33481145 DOI: 10.1007/s10266-020-00582-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 12/13/2020] [Indexed: 11/25/2022]
Abstract
This study aimed to evaluate two methods of the incorporation of nanostructured silver vanadate decorated with silver nanoparticles (AgVO3) into acrylic resin and characterize the profile of early and late microbial communities in class and family taxonomic level by pyrosequencing. The specimens were made by adding different concentrations of AgVO3 (1, 2.5, and 5%) to the heat-activated acrylic resin by two methods: vacuum spatulation (VS) and polymeric film (PF). A control group (0%) without AgVO3 was also obtained for both methods. After 24 h and 7 days of incubation in human saliva, biofilm samples were collected, DNA was extracted, and 16S rRNA genes were sequenced by the 454-Roche sequencing platform. Seventeen classes and 51 families of bacteria were identified. The abundance of Bacteroidia, Bacilli, Negativicutes, Fusobacteria and Betaproteobacteria classes decreased after 7 days of incubation, and Clostridia, Gammaproteobacteria, and unclassified bacteria increased. The Negativicutes and Betaproteobacteria classes were more abundant when the PF method was used, and Gammaproteobacteria was more abundant when VS was used. The incorporation of 5% AgVO3 promoted a reduction in the prevalence of Bacilli, Clostridia, Negativicutes, Betaproteobacteria, and unclassified bacteria, and increased Gammaproteobacteria. The addition of AgVO3 to acrylic resin altered the early and mature microbiome formed on the specimen surface, and the PF method presented a more favorable microbial profile than the VS method.
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Affiliation(s)
- Denise Tornavoi de Castro
- Departament of Dental Materials and Prosthesis, School of Dentistry of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, Ribeirão Prêto, SP, 14040-904, Brazil
| | - Ana Beatriz Vilela Teixeira
- Departament of Dental Materials and Prosthesis, School of Dentistry of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, Ribeirão Prêto, SP, 14040-904, Brazil
| | - Cássio do Nascimento
- Departament of Dental Materials and Prosthesis, School of Dentistry of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, Ribeirão Prêto, SP, 14040-904, Brazil
| | - Oswaldo Luiz Alves
- Laboratory of Solid State Chemistry, Institute of Chemistry, University of Campinas (Unicamp), Cidade Universitária Barão Geraldo, Campinas, SP, 13083-970, Brazil
| | - Emerson de Souza Santos
- Department of Clinical Toxicological and Bromatologic Analysis, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, Ribeirão Prêto, SP, 14040-903, Brazil
| | | | - Andréa Cândido Dos Reis
- Departament of Dental Materials and Prosthesis, School of Dentistry of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, Ribeirão Prêto, SP, 14040-904, Brazil.
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Mayer VMT, Tomek MB, Figl R, Borisova M, Hottmann I, Blaukopf M, Altmann F, Mayer C, Schäffer C. Utilization of different MurNAc sources by the oral pathogen Tannerella forsythia and role of the inner membrane transporter AmpG. BMC Microbiol 2020; 20:352. [PMID: 33203363 PMCID: PMC7670621 DOI: 10.1186/s12866-020-02006-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 10/12/2020] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND The Gram-negative oral pathogen Tannerella forsythia strictly depends on the external supply of the essential bacterial cell wall sugar N-acetylmuramic acid (MurNAc) for survival because of the lack of the common MurNAc biosynthesis enzymes MurA/MurB. The bacterium thrives in a polymicrobial biofilm consortium and, thus, it is plausible that it procures MurNAc from MurNAc-containing peptidoglycan (PGN) fragments (muropeptides) released from cohabiting bacteria during natural PGN turnover or cell death. There is indirect evidence that in T. forsythia, an AmpG-like permease (Tanf_08365) is involved in cytoplasmic muropeptide uptake. In E. coli, AmpG is specific for the import of N-acetylglucosamine (GlcNAc)-anhydroMurNAc(-peptides) which are common PGN turnover products, with the disaccharide portion as a minimal requirement. Currently, it is unclear which natural, complex MurNAc sources T. forsythia can utilize and which role AmpG plays therein. RESULTS We performed a screen of various putative MurNAc sources for T. forsythia mimicking the situation in the natural habitat and compared bacterial growth and cell morphology of the wild-type and a mutant lacking AmpG (T. forsythia ΔampG). We showed that supernatants of the oral biofilm bacteria Porphyromonas gingivalis and Fusobacterium nucleatum, and of E. coli ΔampG, as well as isolated PGN and defined PGN fragments obtained after enzymatic digestion, namely GlcNAc-anhydroMurNAc(-peptides) and GlcNAc-MurNAc(-peptides), could sustain growth of T. forsythia wild-type, while T. forsythia ΔampG suffered from growth inhibition. In supernatants of T. forsythia ΔampG, the presence of GlcNAc-anhMurNAc and, unexpectedly, also GlcNAc-MurNAc was revealed by tandem mass spectrometry analysis, indicating that both disaccharides are substrates of AmpG. The importance of AmpG in the utilization of PGN fragments as MurNAc source was substantiated by a significant ampG upregulation in T. forsythia cells cultivated with PGN, as determined by quantitative real-time PCR. Further, our results indicate that PGN-degrading amidase, lytic transglycosylase and muramidase activities in a T. forsythia cell extract are involved in PGN scavenging. CONCLUSION T. forsythia metabolizes intact PGN as well as muropeptides released from various bacteria and the bacterium's inner membrane transporter AmpG is essential for growth on these MurNAc sources, and, contrary to the situation in E. coli, imports both, GlcNAc-anhMurNAc and GlcNAc-MurNAc fragments.
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Affiliation(s)
- Valentina M T Mayer
- Department of NanoBiotechnology, NanoGlycobiology unit, Universität für Bodenkultur Wien, Vienna, Austria
| | - Markus B Tomek
- Department of NanoBiotechnology, NanoGlycobiology unit, Universität für Bodenkultur Wien, Vienna, Austria
| | - Rudolf Figl
- Department of Chemistry, Institute of Biochemistry, Universität für Bodenkultur Wien, Vienna, Austria
| | - Marina Borisova
- Department of Biology, Eberhard Karls Universität Tübingen, Microbiology/Glycobiology, Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Tübingen, Germany
| | - Isabel Hottmann
- Department of Biology, Eberhard Karls Universität Tübingen, Microbiology/Glycobiology, Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Tübingen, Germany
| | - Markus Blaukopf
- Department of Chemistry, Institute of Organic Chemistry, Universität für Bodenkultur Wien, Vienna, Austria
| | - Friedrich Altmann
- Department of Chemistry, Institute of Biochemistry, Universität für Bodenkultur Wien, Vienna, Austria
| | - Christoph Mayer
- Department of Biology, Eberhard Karls Universität Tübingen, Microbiology/Glycobiology, Interfaculty Institute of Microbiology and Infection Medicine Tübingen, Tübingen, Germany.
| | - Christina Schäffer
- Department of NanoBiotechnology, NanoGlycobiology unit, Universität für Bodenkultur Wien, Vienna, Austria.
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Patil S, GS V, Baeshen H, Ali Sumayli MA, Saeed AlShahrani MA, Alkhallaf Najmi AI, Jafer MA, Vishwanathaiah S, Khan S. Current trends and future prospects of chemical management of oral biofilms. J Oral Biol Craniofac Res 2020; 10:660-664. [PMID: 32995256 PMCID: PMC7501456 DOI: 10.1016/j.jobcr.2020.08.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 08/16/2020] [Accepted: 08/25/2020] [Indexed: 01/13/2023] Open
Abstract
Oral biofilm, a tribulation encountered on a general basis is known to associate and contribute to many oral and systemic diseases. Eradication of these biofilms is a primary step in treatment of the underlying malady. Management of a biofilm is governed by various factors: the microenvironment within a biofilm, bond between the adhered surface and the biofilm, location of the biofilm, access to the biofilm for removal. Though annihilation is the priority, the mode of approach to achieve the same is equally important, because biofilm's heterogenic nature and location govern the strategical treatment required. Literature supports that the consequences of oral biofilms is not restricted to its home ground, but disseminated to other systems of the body. This contemplates us to procure knowledge on its development, structure and progression to aim its eradication. Therefore, this review attempts to recognize the type of biofilm based on location and enumerate all the possible chemical modes of management for the specific type of oral biofilms encountered. In addition, to the traditional strategies prescribed or administered, newer approaches which are gaining popularity due to their ease and efficiency are also addressed. Frontiers in the above field, under investigation and promising in near future are also compiled. Thus, the present review aims to provide a comprehensive elucidation of chemical management of oral biofilms, both the conventional and novel approaches under investigation.
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Affiliation(s)
- Shankargouda Patil
- Department of Oral and Maxillofacial Surgery and Diagnostic Sciences, Division of Oral Pathology, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Vidya GS
- Sree NRJV Specialists Dental Clinic, Bangalore, India
| | - Hosam Baeshen
- Department of Orthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | | | | | | | - Mohammed Abdurabu Jafer
- Department of Preventive Dentistry, College of Dentistry, Jazan University, Jazan, Saudi Arabia
- Health Promotion Unit, Maastricht University, the Netherlands
| | - Satish Vishwanathaiah
- Department of Preventive Dentistry, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Shahrukh Khan
- School of Nursing and Midwifery, Faculty of Health, Deakin University, Geelong, Australia
- Alfred Health Partnership, Melbourne, Australia
- Centre for Rural Health, College of Health and Medicine, University of Tasmania, Hobart, Australia
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Bhadila G, Filemban H, Wang X, Melo MAS, Arola DD, Tay FR, Oates TW, Weir MD, Sun J, Xu HH. Bioactive low-shrinkage-stress nanocomposite suppresses S. mutans biofilm and preserves tooth dentin hardness. Acta Biomater 2020; 114:146-157. [PMID: 32771591 DOI: 10.1016/j.actbio.2020.07.057] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 07/26/2020] [Accepted: 07/30/2020] [Indexed: 12/22/2022]
Abstract
Recurrent dental caries is one of the main reasons for resin composite restoration failures. This study aimed to: (1) develop a bioactive, low-shrinkage-stress, antibacterial and remineralizing composite and evaluate the sustainability of its antibacterial effect against Streptococcus mutans (S. mutans) biofilms; and (2) evaluate the remineralization and cariostatic potential of the composite containing nanoparticles of amorphous calcium phosphate (NACP) and dimethylaminohexadecyl methacrylate (DMAHDM), using dentin hardness measurement and a biofilm-induced recurrent caries model. The antibacterial and remineralizing low-shrinkage-stress composite consisted of urethane dimethacrylate (UDMA) and triethylene glycol divinylbenzyl ether (TEG-DVBE), 3% DMAHDM and 20% NACP. S. mutans biofilm was used to evaluate antibiofilm activity, before and after 3 months of composite aging in acidic solution. Human dentin was used to develop a recurrent caries biofilm-model. Adding DMAHDM and NACP into low shrinkage-stress composite did not compromise the flexural strength. The low-shrinkage-stress composite with DMAHDM achieved substantial reductions in biofilm colony-forming units (CFU), lactic acid production, and biofilm biomass (p < 0.05). The low-shrinkage-stress DMAHDM+NACP composite exhibited no significant difference in antibacterial performance before and after 3 months of aging, demonstrating long-term antibacterial activity. Under S. mutans biofilm acidic attack, dentin hardness (GPa) was 0.24 ± 0.04 for commercial control, and 0.23 ± 0.03 for experimental control, but significantly higher at 0.34 ± 0.03 for DMAHDM+NACP group (p < 0.05). At an instrumental compliance of 0.33 μm/N, the polymerization shrinkage stress of the new composite was 36% lower than that of a traditional composite (p < 0.05). The triple strategy of antibacterial, remineralization and lower shrinkage-stress has great potential to inhibit recurrent caries and increase restoration longevity. Statement of Significance Polymerization shrinkage stress, masticatory load over time as well as biochemical degradation can lead to marginal failure and secondary caries. The present study developed a new low-shrinkage-stress, antibacterial and remineralizing dental nanocomposite. Polymerization shrinkage stress was greatly reduced, biofilm acid production was inhibited, and tooth dentin mineral and hardness were preserved. The antibacterial composite possessed a long-lasting antibiofilm effect against cariogenic bacteria S. mutans. The new bioactive nanocomposite has the potential to suppress recurrent caries at the restoration margins, protects tooth structures, and increases restoration longevity.
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Engel AS, Kranz HT, Schneider M, Tietze JP, Piwowarcyk A, Kuzius T, Arnold W, Naumova EA. Biofilm formation on different dental restorative materials in the oral cavity. BMC Oral Health 2020; 20:162. [PMID: 32493365 PMCID: PMC7268681 DOI: 10.1186/s12903-020-01147-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 05/21/2020] [Indexed: 01/05/2023] Open
Abstract
Background Bacterial biofilms adhere to all tissues and surfaces in the oral cavity. Oral biofilms are responsible for the decay of human dental structures and the inflammatory degeneration of the alveolar bone. Moreover, oral biofilms on artificial materials influence the lifespan of dental prostheses and restoratives. Methods To investigate in vivo oral biofilm formation and growth, five different dental restorative materials were analyzed and compared to human enamel. The roughness of the materials and the human enamel control probe were measured at the start of the study. The dental restorative materials and the human enamel control probe were placed in dental splints and worn for 3 h, 24 h and 72 h. Results Scanning electron microscopy (SEM) revealed major differences between oral biofilm formation and growth on the materials compared to those on human enamel. Microbiological analyses showed that bacterial strains differed between the materials. Significant differences were observed in the roughness of the dental materials. Conclusions It can be concluded that material roughness affects biofilm formation on dental surfaces and restoratives, but other factors, such as surface charge, surface energy and material composition, may also have an influence.
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Affiliation(s)
- Alexander-Simon Engel
- Department of Biological and Material Sciences in Dentistry, Faculty of Health, Witten/Herdecke University, Alfred Herrhausenstrasse 44, 58455, Witten, Germany
| | - Hagen Tizian Kranz
- Department of Biological and Material Sciences in Dentistry, Faculty of Health, Witten/Herdecke University, Alfred Herrhausenstrasse 44, 58455, Witten, Germany
| | - Marvin Schneider
- Department of Biological and Material Sciences in Dentistry, Faculty of Health, Witten/Herdecke University, Alfred Herrhausenstrasse 44, 58455, Witten, Germany
| | - Jan Peter Tietze
- Department of Biological and Material Sciences in Dentistry, Faculty of Health, Witten/Herdecke University, Alfred Herrhausenstrasse 44, 58455, Witten, Germany
| | - Andree Piwowarcyk
- Department of Prosthodontics and Dental Technology, Faculty of Health, Witten/Herdecke University, Alfred Herrhausenstrasse 44, 58455, Witten, Germany
| | - Thorsten Kuzius
- Institute for Hygiene, Faculty of Medicine, Westfälische Wilhelms-Universität Muenster, Robert Koch Strasse 41, 48149, Muenster, Germany
| | - Wolfgang Arnold
- Department of Biological and Material Sciences in Dentistry, Faculty of Health, Witten/Herdecke University, Alfred Herrhausenstrasse 44, 58455, Witten, Germany.
| | - Ella A Naumova
- Department of Biological and Material Sciences in Dentistry, Faculty of Health, Witten/Herdecke University, Alfred Herrhausenstrasse 44, 58455, Witten, Germany
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Ahmad N, Jafri Z, Khan ZH. Evaluation of nanomaterials to prevent oral Candidiasis in PMMA based denture wearing patients. A systematic analysis. J Oral Biol Craniofac Res 2020; 10:189-193. [PMID: 32373449 DOI: 10.1016/j.jobcr.2020.04.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 03/15/2020] [Accepted: 04/14/2020] [Indexed: 01/09/2023] Open
Abstract
Purpose The purpose of this study is the prevention of Candida colonies on PMMA Denture Base by altering the surface and incorporations of Nanoparticles. Materials and methods The Pub Med/Medline was searched to identify 100 relevant studies published from 2011 to 2020. The search strategy employed the following keywords related to "use of Nanoparticles in dentistry", "Antimicrobial agents and PMMA", "Candidiasis and nanomaterials", "Prevention of oral Candidiasis", "Incorporation of antimicrobial agents in acrylic dentures," "nanoparticles as therapeutic agents for denture stomatitis", "Nanodentistry" or "Nanotechnology" or "Nanocomposite" or "Nanodrugs" or "Nanomaterials". Results Most of the studies shows that modified PMMA denture base resin containing different antimicrobial coatings and incorporation of metal oxides Nanoparticles and other nanomaterials showed antifungal activity in vitro; however some materials in higher concentration showing altered physical and mechanical properties possibly due to aggregation of Nanoparticles in the lattice of PMMA molecules. Conclusion Metal oxides nanomaterials revealed cytotoxicity to Candida and other microbes present in oral biofilm including PMMA denture surface. Nano toxicity may attribute to direct interaction of nanoparticles with cell membrane, hindrance in protein synthesis and early adhesion & interfere with physiology of pathogens.
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Affiliation(s)
- Nafis Ahmad
- Dept of Prosthodontics, Faculty of Dentistry, Jamia Millia Islamia, New Delhi, India
| | - Zeba Jafri
- Dept of Periodontics, Faculty of Dentistry, Jamia Millia Islamia, New Delhi, India
| | - Zishan H Khan
- Dept. of Applied Science & Humanities, Faculty of Engineering &Technology, Jamia Millia Islamia, New Delhi, India
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Garcez AS, Barros LC, Fernandes MRU, Fujii DN, Suzuki SS, Nepomuceno R. Fluorescence image and microbiological analysis of biofilm retained around healthy and inflamed orthodontic miniscrews. Photodiagnosis Photodyn Ther 2020; 30:101707. [PMID: 32126307 DOI: 10.1016/j.pdpdt.2020.101707] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/21/2020] [Accepted: 02/28/2020] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Peri-miniscrew inflammation is one of the causes of orthodontic miniscrew failure. OBJECTIVE The aim of this study was to correlate and quantify throughout autofluorescence images, PCR and microbiologic count of biofilm retained around orthodontic miniscrew and the presence of Porphyromonas gingivalis. MATERIALS AND METHODS Forty miniscrews used for orthodontic treatment were evaluated during orthodontic treatment, collected from patients and divided into two groups: healthy and inflamed miniscrews. To be considered inflamed, the samples should present: loss of stability checked by periotest®, clinical presence of mucositis, red aspect of the gum or bleeding around the miniscrew. Immediately after removal of the miniscrews, they were photographed using a macro 100 lens and a Pentax camera coupled to a fluorescent equipment - Qscan (AioBio - Korea) with 405 nm excitation wavelength and a blue band filter. A microbiologic sample was collected with a sterile microbrush scrubbed around the miniscrew tread. Fluorescent images were analyzed with ImageJ software to quantify fluorescent intensity and fluorescent area and microbiological samples were submitted to CFU count for total contamination and q-PCR assay to quantify Porphyromonas gingivalis. RESULTS The results showed a good correlation between CFU count and fluorescent intensity and PCR/fluorescent area. The healthy miniscrews presented less fluorescent intensity and lower CFU count when compared to inflamed miniscrews. q-PCR analysis showed a higher number of P. gingivalis contamination around inflamed miniscrews. CONCLUSION Quantification of biofilm retained by miniscrew by images of autofluorescence is a simple and reliable method with great potential for clinical use to monitory inflammation around miniscrew and risk of loss.
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Affiliation(s)
- A S Garcez
- Dep. of Orthodontics, São Leopoldo Mandic Dental Institute and Research Center, Brazil; Dep. of Oral Microbiology, São Leopoldo Mandic Dental Institute and Research Center, Brazil.
| | - L C Barros
- Dep. of Orthodontics, São Leopoldo Mandic Dental Institute and Research Center, Brazil
| | - M R U Fernandes
- Dep. of Orthodontics, São Leopoldo Mandic Dental Institute and Research Center, Brazil
| | - D N Fujii
- Dep. of Orthodontics, São Leopoldo Mandic Dental Institute and Research Center, Brazil
| | - S S Suzuki
- Dep. of Orthodontics, São Leopoldo Mandic Dental Institute and Research Center, Brazil
| | - R Nepomuceno
- Dep. of Oral Microbiology, São Leopoldo Mandic Dental Institute and Research Center, Brazil
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Ito Y, Ito T, Yamashiro K, Mineshiba F, Hirai K, Omori K, Yamamoto T, Takashiba S. Antimicrobial and antibiofilm effects of abietic acid on cariogenic Streptococcus mutans. Odontology 2019; 108:57-65. [PMID: 31520265 DOI: 10.1007/s10266-019-00456-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 07/02/2019] [Indexed: 01/06/2023]
Abstract
Dental caries is a type of oral microbiome dysbiosis and biofilm infection that affects oral and systemic conditions. For healthy life expectancy, natural bacteriostatic products are ideal for daily and lifetime use as anti-oral infection agents. This study aimed to evaluate the inhibitory effects of abietic acid, a diterpene derived from pine rosin, on the in vitro growth of cariogenic bacterial species, Streptococcus mutans. The effective minimum inhibitory concentration of abietic acid was determined through observation of S. mutans growth, acidification, and biofilm formation. The inhibitory effects of abietic acid on the bacterial membrane were investigated through the use of in situ viability analysis and scanning electron microscopic analysis. Cytotoxicity of abietic acid was also examined in the context of several human cell lines using tetrazolium reduction assay. Abietic acid was found to inhibit key bacterial growth hallmarks such as colony forming ability, adenosine triphosphate activity (both planktonic and biofilm), acid production, and biofilm formation. Abietic acid was identified as bacteriostatic, and this compound caused minimal damage to the bacterial membrane. This action was different from that of povidone-iodine or cetylpyridinium chloride. Additionally, abietic acid was significantly less cytotoxic compared to povidone-iodine, and it exerted lower toxicity towards epithelial cells and fibroblasts compared to that against monocytic cells. These data suggest that abietic acid may prove useful as an antibacterial and antibiofilm agent for controlling S. mutans infection.
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Affiliation(s)
- Yuki Ito
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan
| | - Takashi Ito
- Center for Innovative Clinical Medicine, Okayama University Hospital, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan
| | - Keisuke Yamashiro
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan
| | - Fumi Mineshiba
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan
| | - Kimito Hirai
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan
| | - Kazuhiro Omori
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan
| | - Tadashi Yamamoto
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan
| | - Shogo Takashiba
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan.
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Cleaver LM, Moazzez R, Carpenter GH. Mixed aerobic-anaerobic incubation conditions induce proteolytic activity from in vitro salivary biofilms. J Oral Microbiol 2019; 11:1643206. [PMID: 31489124 PMCID: PMC6711154 DOI: 10.1080/20002297.2019.1643206] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 06/27/2019] [Accepted: 07/03/2019] [Indexed: 11/26/2022] Open
Abstract
Oral biofilms have not been studied using both metabolome and protein profiling concurrently. Bacteria produce proteases that lead to degradation of functional salivary proteins. The novel protocol described here allows for complete characterisation of in vitro oral biofilms, including proteolytic, metabolic, and microbiome analysis. Biofilms were grown on hydroxyapatite discs from whole mouth saliva, using sterilised saliva as a growth-medium, in different growth environments. Salivary protein degradation was assessed from spent saliva growth-medium using SDS-polyacrylamide gel electrophoresis (SDS-PAGE), and metabolic activity by nuclear magnetic resonance (NMR). Discs were assessed for depth and coverage of biofilms by confocal laser scanning microscopy (CLSM), and biofilms were collected at the end of the experiment for 16S rRNA gene sequence analysis. There was a significant difference in biofilm viability, salivary protein degradation, and metabolites identified between biofilms grown aerobically and biofilms exposed to an anaerobic environment. Bacterial 16S rRNA gene sequencing showed the predominant genus in the 7-day aerobic biofilms was Streptococcus, in aerobic-anaerobic and anaerobic 7-day biofilms Porphyromonas, and in aerobic-anaerobic and anaerobic 13-day biofilms Fusobacterium. This data suggests new growth requirements and capabilities for analysing salivary biofilms in vitro, which can be used to benefit future research into oral bacterial biofilms.
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Affiliation(s)
- Leanne M Cleaver
- Centre for Host Microbiome Interactions, King's College London Faculty of Dentistry, Oral and Craniofacial Sciences, London, UK
| | - Rebecca Moazzez
- Centre for Oral, Clinical and Translational Science, King's College London Faculty of Dentistry, Oral and Craniofacial Sciences, London, UK
| | - Guy H Carpenter
- Centre for Host Microbiome Interactions, King's College London Faculty of Dentistry, Oral and Craniofacial Sciences, London, UK
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Hasegawa T, Takenaka S, Ohsumi T, Ida T, Ohshima H, Terao Y, Naksagoon T, Maeda T, Noiri Y. Effect of a novel glass ionomer cement containing fluoro-zinc-silicate fillers on biofilm formation and dentin ion incorporation. Clin Oral Investig 2019; 24:963-970. [PMID: 31273528 DOI: 10.1007/s00784-019-02991-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 06/28/2019] [Indexed: 12/15/2022]
Abstract
OBJECTIVES This study is aimed at evaluating the effect of a new glass ionomer cement (GIC) containing fluoro-zinc-silicate fillers on biofilm formation and ion incorporation. MATERIALS AND METHODS Streptococcus mutans biofilms were developed on two GIC materials: Caredyne Restore (CD) and Fuji VII (FJ); and hydroxyapatite (HA) for 24 h at 37 °C using a flow cell system. The morphological structure and bacterial viability were analyzed using a confocal laser scanning microscopy. Bacterial adhesion during the initial 2 h was also assessed by viable cell counting. To study the ion incorporation, restored cavities prepared on the root surfaces of human incisors were subjected to the elemental mapping of the zinc and fluoride ions in the GIC-dentin interface using a wavelength-dispersive X-ray spectroscopy electron probe microanalyzer. RESULTS Morphological observations revealed that biofilm formation in the CD group was remarkably inhibited compared with the HA and FJ groups, exhibiting sparse, thinner biofilm clusters. The microorganisms adhering to the CD group were significantly inhibited, revealing 2.9 ± 0.4 for CD, 4.9 ± 0.2 for FJ, and 5.4 ± 0.4 log colony-forming units (CFU) for HA. The CD zinc ion incorporation depth was 72.2 ± 8.0 μm. The fluoride penetration of CD was three times deeper than that of FJ; this difference was statistically significant (p < 0.05). CONCLUSIONS Enhanced by the incorporation of zinc and fluoride ions, the new GIC inhibited biofilm formation by interfering with bacterial adhesion. CLINICAL RELEVANCE A novel GIC comprised of fluoro-zinc-silicate fillers may improve clinical outcomes, such as root caries and minimally invasive dentistry.
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Affiliation(s)
- Taisuke Hasegawa
- Division of Cariology, Operative Dentistry and Endodontics, Niigata University Graduate School of Medical and Dental Sciences, 2-5274, Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Shoji Takenaka
- Division of Cariology, Operative Dentistry and Endodontics, Niigata University Graduate School of Medical and Dental Sciences, 2-5274, Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan.
| | - Tatsuya Ohsumi
- Division of Cariology, Operative Dentistry and Endodontics, Niigata University Graduate School of Medical and Dental Sciences, 2-5274, Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Takako Ida
- Division of Bio-Prosthodontics, Niigata University Graduate School of Medical and Dental Sciences, 2-5274, Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Hayato Ohshima
- Division of Anatomy and Cell Biology of Hard Tissue, Niigata University Graduate School of Medical and Dental Sciences, 2-5274, Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Yutaka Terao
- Division of Microbiology and Infectious Diseases, Niigata University Graduate School of Medical and Dental Sciences, 2-5274, Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Traithawit Naksagoon
- Division of Cariology, Operative Dentistry and Endodontics, Niigata University Graduate School of Medical and Dental Sciences, 2-5274, Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan.,Research Centre for Advanced Oral Science, Niigata University Graduate School of Medical and Dental Sciences, 2-5274, Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Takeyasu Maeda
- Research Centre for Advanced Oral Science, Niigata University Graduate School of Medical and Dental Sciences, 2-5274, Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Yuichiro Noiri
- Division of Cariology, Operative Dentistry and Endodontics, Niigata University Graduate School of Medical and Dental Sciences, 2-5274, Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
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Hong Q, Dong X, Chen M, Sun H, Hong L, Wang Y, Li H, Yu Q. An in vitro and in vivo study of plasma treatment effects on oral biofilms. J Oral Microbiol 2019; 11:1603524. [PMID: 31069019 PMCID: PMC6493255 DOI: 10.1080/20002297.2019.1603524] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 03/25/2019] [Accepted: 03/29/2019] [Indexed: 12/31/2022] Open
Abstract
Management of dental plaque/biofilms is critical to maintain oral health. The objective of this study is to investigate the treatment effects of non-thermal atmospheric gas plasmas on oral biofilm formation and recovery under in vitro and in vivo conditions. Streptococcus mutans biofilms, a significant contributor to tooth decay, were cultured and treated by plasma. It was found that plasma treatment not only significantly reduced the in vitro biofilms, but also increased the metabolic activity of the bacteria in the biofilms. As compared with untreated control group, the cell metabolic activity, as measured by MTT assay, increased by 273%, and the aconitase activity increased by 446% for the plasma-treated group. The increased metabolic activity of the plasma-treated biofilm bacteria enhanced their susceptibility to antibiotic and host defense. An in vivo animal model using a total of 60 female rats (19 days old) were used to evaluate the anti-caries effects on the molars by 2 min of plasma treatment. It was found that, 6 months after the plasma treatment, the decayed surfaces were reduced by 62.5% on the upper molars and by 31.6% on the lower molars as compared with the untreated upper and lower molars, respectively. These in vitro and in vivo data demonstrate that the physiological state change of the biofilm due to plasma treatment provided benefit to caries control and prevention.
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Affiliation(s)
- Qing Hong
- Center for Surface Science and Plasma Technology, Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO, USA
| | - Xiaoqing Dong
- Center for Surface Science and Plasma Technology, Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO, USA
| | | | - Hongmin Sun
- Department of Internal Medicine, University of Missouri, Columbia, MO, USA
| | - Liang Hong
- Department of Pediatric and Community Dentistry, College of Dentistry, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Yong Wang
- Center for Research on Interfacial Structure & Properties, School of Dentistry, University of Missouri-Kansas City, Kansas City, MO, USA
| | - Hao Li
- Center for Surface Science and Plasma Technology, Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO, USA
| | - Qingsong Yu
- Center for Surface Science and Plasma Technology, Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO, USA
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Mahmoud MY, Steinbach-Rankins JM, Demuth DR. Functional assessment of peptide-modified PLGA nanoparticles against oral biofilms in a murine model of periodontitis. J Control Release 2019; 297:3-13. [PMID: 30690103 DOI: 10.1016/j.jconrel.2019.01.036] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 01/08/2019] [Accepted: 01/24/2019] [Indexed: 01/06/2023]
Abstract
The interaction of the periodontal pathogen Porphyromonas gingivalis (Pg) with commensal streptococci promotes Pg colonization of the oral cavity. Previously, we demonstrated that a peptide (BAR) derived from Streptococcus gordonii (Sg) potently inhibited adherence of Pg to streptococci and reduced Pg virulence in a mouse model of periodontitis. Thus, BAR may represent a novel therapeutic to control periodontitis by preventing Pg colonization of the oral cavity. However, while BAR inhibited the initial formation of Pg/Sg biofilms, much higher concentrations of peptide were required to disrupt an established Pg/Sg biofilm. To improve the activity of the peptide, poly(lactic-co-glycolic acid) (PLGA) nanoparticles were surface-modified with BAR and shown to more potently disrupt Pg/Sg biofilms relative to an equimolar amount of free peptide. The goal of this work was to determine the in vivo efficacy of BAR-modified NPs (BNPs) and to assess the toxicity of BNPs against human gingival epithelial cells. In vivo efficacy of BNPs was assessed using a murine model of periodontitis by measuring alveolar bone resorption and gingival IL-17 expression as outcomes of Pg-induced inflammation. Infection of mice with Pg and Sg resulted in a significant increase in alveolar bone loss and gingival IL-17 expression over sham-infected animals. Treatment of Pg/Sg infected mice with BNPs reduced bone loss and IL-17 expression almost to the levels of sham-infected mice and to a greater extent than treatment with an equimolar amount of free BAR. The cytotoxicity of the maximum concentration of BNPs and free BAR used in in vitro and in vivo studies (1.3 and 3.4 μM), was evaluated in telomerase immortalized gingival keratinocytes (TIGKs) by measuring cell viability, cell lysis and apoptosis. BNPs were also tested for hemolytic activity against sheep erythrocytes. TIGKs treated with BNPs or free BAR demonstrated >90% viability and no significant lysis or apoptosis relative to untreated cells. In addition, neither BNPs nor free BAR exhibited hemolytic activity. In summary, BNPs were non-toxic within the evaluated concentration range of 1.3-3.4 μM and provided more efficacious protection against Pg-induced inflammation in vivo, highlighting the potential of BNPs as a biocompatible platform for translatable oral biofilm applications.
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Affiliation(s)
- Mohamed Y Mahmoud
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, United States; Center for Predictive Medicine, University of Louisville, 505 S. Hancock St., Louisville, KY 40202, United States; Department of Toxicology, Forensic Medicine and Veterinary Regulations, Faculty of Veterinary Medicine, Cairo University, Egypt.
| | - Jill M Steinbach-Rankins
- Department of Bioengineering, University of Louisville Speed School of Engineering, United States; Department of Microbiology and Immunology, University of Louisville School of Medicine, United States; Department of Pharmacology and Toxicology, University of Louisville School of Medicine, United States; Center for Predictive Medicine, University of Louisville, 505 S. Hancock St., Louisville, KY 40202, United States.
| | - Donald R Demuth
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, 501 S. Preston St., Louisville, KY 40202, United States; Department of Microbiology and Immunology, University of Louisville School of Medicine, United States.
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Giacaman RA, Jobet-Vila P, Muñoz-Sandoval C. Anticaries activity of egg ovalbumin in an experimental caries biofilm model on enamel and dentin. Clin Oral Investig 2018; 23:3509-3516. [PMID: 30543026 DOI: 10.1007/s00784-018-2769-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 12/05/2018] [Indexed: 10/27/2022]
Abstract
OBJECTIVES Limited evidence suggests a putative inhibitory effect of dietary proteins on demineralization during the carious process. The aim was to explore a potential anticaries activity of the egg protein ovalbumin on a relevant in vitro approach. MATERIALS AND METHODS Biofilms of Streptococcus mutans UA159 were formed on saliva-coated enamel and dentin bovine slabs. Biofilms were challenged with 10% sucrose followed by either a 200 μg/mL solution of ovalbumin or 1:10, 1:100, and 1:1000 (v/v) serial dilutions of that ovalbumin solution, for the entire length of the experiment. Biofilms exposed to 10% sucrose followed only by 0.9% NaCl served as caries-positive control. Once completed the experimental phase, biofilms were analyzed for biomass, viable bacteria, and polysaccharide formation. Final surface hardness (SH) was obtained to calculate %SH loss (demineralization). Two independent experiments were conducted, in triplicate. Data were analyzed by ANOVA and a post hoc test at the 95% confidence level. RESULTS A reduction (p < 0.05) in biomass and extracellular polysaccharide formation, but not in the number of viable cells, was observed for both dental substrates. All ovalbumin concentrations tested showed lower demineralization than the positive control (p < 0.05), in a dose-dependent manner. The highest concentration showed a reduction in the %SH loss of about 30% for both enamel and dentin. CONCLUSION Egg ovalbumin presented to sucrose-challenged biofilms of Streptococcus mutans seems to reduce cariogenicity of a biofilm-caries model. CLINICAL RELEVANCE Ovalbumin may counteract the cariogenic effect of sugars. If these findings are clinically confirmed, novel preventive approaches for caries are warranted.
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Affiliation(s)
- Rodrigo A Giacaman
- Cariology Unit, Department of Oral Rehabilitation, University of Talca, 1 poniente 1141, Escuela de Odontología, Talca, Chile.
| | - Pascale Jobet-Vila
- Cariology Unit, Department of Oral Rehabilitation, University of Talca, 1 poniente 1141, Escuela de Odontología, Talca, Chile
| | - Cecilia Muñoz-Sandoval
- Cariology Unit, Department of Oral Rehabilitation, University of Talca, 1 poniente 1141, Escuela de Odontología, Talca, Chile
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Sánchez MC, Toledano-Osorio M, Bueno J, Figuero E, Toledano M, Medina-Castillo AL, Osorio R, Herrera D, Sanz M. Antibacterial effects of polymeric PolymP-n Active nanoparticles. An in vitro biofilm study. Dent Mater 2018; 35:156-168. [PMID: 30502966 DOI: 10.1016/j.dental.2018.11.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 11/08/2018] [Accepted: 11/09/2018] [Indexed: 01/07/2023]
Abstract
OBJECTIVE to study the antibacterial effect of polymeric PolymP-n Active nanoparticles using an in vitro subgingival biofilm model. METHODS Hydroxyapatite discs coated with five modalities of nanoparticles (NPs): NPs, NPs doped with zinc, calcium, silver and doxycycline, PBS as control, and Streptococcus oralis, Actinomyces naeslundii, Veillonella parvula, Fusobacterium nucleatum, Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans were studied in a static in vitro biofilm model (12, 24, 48, and 72h). Nano-roughness of the different disc surfaces (SRa, in nm) and morphological characteristic of the biofilms (thickness (μm) and bacterial viability) were studied by different microscopy modalities. Quantitative Polymerase Chain Reaction was used to assess the effect of the nanoparticles on the bacterial load (colony forming unit per milliliter) (CFUmL-1). Analysis of variance and post-hoc testing with T3 Dunnett́s, and Student Newman Keuls correction was used. Results were considered statistically significant at p<0.05. RESULTS Surfaces containing the different nanoparticles showed significant increments in roughness when compared to controls (p<0.05). A similar biofilm formation and dynamics was observed, although reductions in bacterial viability were detected in biofilms in contact with the different nanoparticles, more pronounced with silver and doxycycline NPs. Doxycycline-NPs biofilms resulted in unstructured biofilm formation and significantly lower number of the six species when compared with the other nanoparticles specimens and controls (p<0.001 in all cases). SIGNIFICANCE Polymeric PolymP-n Active nanoparticles when combined with silver and doxycycline showed a significant antibacterial effect when tested in an in vitro subgingival biofilm model.
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Affiliation(s)
- M C Sánchez
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, University Complutense, Madrid, Spain
| | - M Toledano-Osorio
- Biomaterials in Dentistry Research Group, University of Granada, Spain
| | - J Bueno
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, University Complutense, Madrid, Spain
| | - E Figuero
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, University Complutense, Madrid, Spain
| | - M Toledano
- Biomaterials in Dentistry Research Group, University of Granada, Spain
| | - A L Medina-Castillo
- NanoMyP. Spin-Off Enterprise from University of Granada, Edificio BIC-Granada, Av. Innovación 1, 18016 Armilla, Granada, Spain
| | - R Osorio
- Biomaterials in Dentistry Research Group, University of Granada, Spain.
| | - D Herrera
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, University Complutense, Madrid, Spain
| | - M Sanz
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, University Complutense, Madrid, Spain
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Mahmoud MY, Demuth DR, Steinbach-Rankins JM. BAR-encapsulated nanoparticles for the inhibition and disruption of Porphyromonas gingivalis-Streptococcus gordonii biofilms. J Nanobiotechnology 2018; 16:69. [PMID: 30219060 PMCID: PMC6138925 DOI: 10.1186/s12951-018-0396-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 09/05/2018] [Indexed: 01/19/2023] Open
Abstract
Background Porphyromonas gingivalis adherence to oral streptococci is a key point in the pathogenesis of periodontal diseases (Honda in Cell Host Microbe 10:423–425, 2011). Previous work in our groups has shown that a region of the streptococcal antigen denoted BAR (SspB Adherence Region) inhibits P. gingivalis/S. gordonii interaction and biofilm formation both in vitro and in a mouse model of periodontitis (Daep et al. in Infect Immun 74:5756–5762, 2006; Daep et al. in Infect immun 76:3273–3280, 2008; Daep et al. in Infect Immun 79:67–74, 2011). However, high localized concentration and prolonged exposure are needed for BAR to be an effective therapeutic in the oral cavity. Methods To address these challenges, we fabricated poly(lactic-co-glycolic acid) (PLGA) and methoxy-polyethylene glycol PLGA (mPEG-PLGA) nanoparticles (NPs) that encapsulate BAR peptide, and assessed the potency of BAR-encapsulated NPs to inhibit and disrupt in vitro two-species biofilms. In addition, the kinetics of BAR-encapsulated NPs were compared after different durations of exposure in a two-species biofilm model, against previously evaluated BAR-modified NPs and free BAR. Results BAR-encapsulated PLGA and mPEG-PLGA NPs potently inhibited biofilm formation (IC50 = 0.7 μM) and also disrupted established biofilms (IC50 = 1.3 μM) in a dose-dependent manner. In addition, BAR released during the first 2 h of administration potently inhibits biofilm formation, while a longer duration of 3 h is required to disrupt pre-existing biofilms. Conclusions These results suggest that BAR-encapsulated NPs provide a potent platform to inhibit (prevent) and disrupt (treat) P. gingivalis/S. gordonii biofilms, relative to free BAR. Electronic supplementary material The online version of this article (10.1186/s12951-018-0396-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Mohamed Y Mahmoud
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, 40202, USA.,Center for Predictive Medicine, University of Louisville, 505 S. Hancock St, Louisville, KY, 40202, USA
| | - Donald R Demuth
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, 501 S. Preston St, Louisville, KY, 40202, USA. .,Department of Microbiology and Immunology, University of Louisville School of Medicine, Louisville, KY, 40202, USA.
| | - Jill M Steinbach-Rankins
- Department of Bioengineering, University of Louisville Speed School of Engineering, 505 S. Hancock St., Room 623, Louisville, KY, 40202, USA. .,Department of Microbiology and Immunology, University of Louisville School of Medicine, Louisville, KY, 40202, USA. .,Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, 40202, USA. .,Center for Predictive Medicine, University of Louisville, 505 S. Hancock St, Louisville, KY, 40202, USA.
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Vijayashree Priyadharsini J, Smiline Girija AS, Paramasivam A. In silico analysis of virulence genes in an emerging dental pathogen A. baumannii and related species. Arch Oral Biol 2018; 94:93-98. [PMID: 30015217 DOI: 10.1016/j.archoralbio.2018.07.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 07/04/2018] [Accepted: 07/06/2018] [Indexed: 01/22/2023]
Abstract
OBJECTIVES Acinetobacter baumannii is an opportunistic pathogen which has recently been categorized as a high risk pathogen by World Health Organisation (WHO). The microbe has stealthily entered the oral cavity and has established itself as a potential pathogen by acquiring drug resistance and expression of several virulence genes. Surveillance on the type of virulence factors harboured by the organism will enable us to comprehend the mechanism of pathogenesis. The study was performed to screen for the presence of crucial virulence factors associated with Acinetobacter spp. as reviewed from the literature by employing computational tools. DESIGN Nineteen genome sequences of Acinetobacter spp. with the predominance of different strains of A. baumannii were classified phylogenetically into clusters using in silico restriction digestion and pulse field gel electrophoresis (PFGE). Further, the frequency of common virulence genes in the genome of various Acinetobacter spp. was recorded using in silico PCR analysis. RESULTS Based on PFGE pattern and phylogenetic tree the genomes of A. baumannii were clustered into 4 genotypes (G1-G4). Two species were excluded from the list since they were negative for almost all the virulence genes tested. Frequency of virulence genes in each of the 17 genomes analysed, found ompA and smpA to be the major virulence factors in A. baumannii and related species. Acinetobacter spp. belonging to genotypes 2 and 3 were found to harbour 1-15 and 6-10 potential genes encoding virulence factors respectively. CONCLUSIONS The present study showed numerous virulence genes in genomes analysed. In silico analysis of these virulence genes can be used as candidates to build novel therapeutic targets against the pathogen. An extensive study on the functional role of these genes could aid in stalling the propagation and dissemination of A. baumannii among susceptible individuals.
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Affiliation(s)
- J Vijayashree Priyadharsini
- Biomedical Research Unit and Laboratory Animal Centre-Dental Research Cell [BRULAC-DRC], Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Poonamallee High Road, Chennai, 600 077, Tamil Nadu, India.
| | - A S Smiline Girija
- Department of Microbiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Poonamallee High Road, Chennai, 600 077, Tamil Nadu, India
| | - A Paramasivam
- Centre for Cellular and Molecular Biology, Uppal Road, Habsiguda, Hyderabad, Telangana, 500007, India
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de Castro DT, do Nascimento C, Alves OL, de Souza Santos E, Agnelli JAM, Dos Reis AC. Analysis of the oral microbiome on the surface of modified dental polymers. Arch Oral Biol 2018; 93:107-114. [PMID: 29890443 DOI: 10.1016/j.archoralbio.2018.06.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 04/23/2018] [Accepted: 06/03/2018] [Indexed: 12/12/2022]
Abstract
OBJECTIVES This study characterized the microbial diversity of formed biofilm on the surface of acrylic resins modified with nanostructured silver vanadate decorated with silver nanoparticles (AgVO3) after incubation in human saliva. DESIGN Resin specimens prepared with AgVO3 at concentrations 0%, 1%, 2.5%, and 5% by either vacuum mixing or polymer solubilization were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). After 24 h and 7 days of saliva incubation, biofilm samples were collected from the surface of the specimens. The 16S rDNA genes were amplified, sequenced with the 454-Roche next-generation sequencing platform and analyzed to identify the Operational Taxonomic Units at the genus or higher level. RESULTS Significant differences in the dispersion pattern of the nanoparticles were observed among the two different methods of AgVO3 incorporation. In the microbiological analysis, a total of 103 genera and 7 more inclusive taxa, representing the phyla Bacteroidetes, Firmicutes and Proteobacteria were identified colonizing resin surfaces. The incorporation method of the AgVO3 had little to no significant effect on the microbiota of samples. Significant time and concentration-dependent responses to AgVO3 caused changes in the taxonomic profile at the phylum and genus level. CONCLUSIONS The results show differences in relation to the microbial diversity of modified resins during the initial phase of biofilm maturation. The incorporation of AgVO3 seems to significantly affect the colonizing microbiota.
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Affiliation(s)
- Denise Tornavoi de Castro
- School of Dentistry of Uberaba, Department of Biomaterials, University of Uberaba, Av. Nenê Sabino, 1801, Bairro Universitário, Uberaba, Minas Gerais, 38055-500, Brazil
| | - Cássio do Nascimento
- School of Dentistry of Ribeirão Preto, Department of Dental Materials and Prosthodontics, University of São Paulo, Av. Café s/no, Monte Alegre, Ribeirão Preto, São Paulo, 14040-904, Brazil
| | - Oswaldo Luiz Alves
- State University of Campinas (UNICAMP), Laboratory of Solid State Chemistry, Cidade Universitária Zeferino Vaz - Barão Geraldo, Campinas, São Paulo, 13083-859, Brazil
| | - Emerson de Souza Santos
- School of Pharmaceutical Sciences of Ribeirão Preto, Department of Clinical Toxicological and Bromatologic Analysis, University of São Paulo, Av. Café s/no, Monte Alegre, Ribeirão Preto, São Paulo, 14040-903, Brazil
| | - José Augusto Marcondes Agnelli
- Federal University of São Carlos (UFSCAR), Department of Materials Engineering, CP 676, São Carlos, São Paulo, 13565-905, Brazil
| | - Andréa Cândido Dos Reis
- School of Dentistry of Ribeirão Preto, Department of Dental Materials and Prosthodontics, University of São Paulo, Av. Café s/no, Monte Alegre, Ribeirão Preto, São Paulo, 14040-904, Brazil.
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Amoo-Achampong F, Vitunac DE, Deeley K, Modesto A, Vieira AR. Complex patterns of response to oral hygiene instructions: longitudinal evaluation of periodontal patients. BMC Oral Health 2018; 18:72. [PMID: 29716557 PMCID: PMC5930808 DOI: 10.1186/s12903-018-0537-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 04/23/2018] [Indexed: 12/03/2022] Open
Abstract
Background Oral hygiene instruction is an intervention widely practiced but increased knowledge about oral health does not necessarily dramatically impact oral disease prevalence in populations. We aimed to measure plaque and bleeding in periodontal patients over time to determine patterns of patient response to oral hygiene instructions. Methods Longitudinal plaque and bleeding index data were evaluated in 227 periodontal patients to determine the impact of oral hygiene instructions. Over multiple visits, we determined relative plaque accumulation and gingival bleeding for each patient. Subsequently, we grouped them in three types of oral hygiene status in response to initial instructions, using the longitudinal data over the period they were treated and followed for their periodontal needs. These patterns of oral hygiene based on the plaque and gingival bleeding indexes were evaluated based on age, sex, ethnic background, interleukin 1 alpha and beta genotypes, diabetes status, smoking habits, and other concomitant diseases. Chi-square and Fisher’s exact tests were used to determine if any differences between these variables were statistically significant with alpha set at 0.05. Results Three patterns in response to oral hygiene instructions emerged. Plaque and gingival bleeding indexes improved, worsened, or fluctuated over time in the periodontal patients studied. Out of all the confounders considered, only ethnic background showed statistically significant differences. White individuals more often than other ethnic groups fluctuated in regards to oral hygiene quality after instructions. Conclusions There are different responses to professional oral hygiene instructions. These responses may be related to ethnicity. Electronic supplementary material The online version of this article (10.1186/s12903-018-0537-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Felice Amoo-Achampong
- Departments of Oral Biology, University of Pittsburgh School of Dental Medicine, 412 Salk Pavilion, Pittsburgh, PA, 15261, USA
| | - David E Vitunac
- Departments of Oral Biology, University of Pittsburgh School of Dental Medicine, 412 Salk Pavilion, Pittsburgh, PA, 15261, USA
| | - Kathleen Deeley
- Departments of Oral Biology, University of Pittsburgh School of Dental Medicine, 412 Salk Pavilion, Pittsburgh, PA, 15261, USA
| | - Adriana Modesto
- Departments of Oral Biology, University of Pittsburgh School of Dental Medicine, 412 Salk Pavilion, Pittsburgh, PA, 15261, USA.,Pediatric Dentistry, University of Pittsburgh School of Dental Medicine, 412 Salk Pavilion, Pittsburgh, PA, 15261, USA
| | - Alexandre R Vieira
- Departments of Oral Biology, University of Pittsburgh School of Dental Medicine, 412 Salk Pavilion, Pittsburgh, PA, 15261, USA. .,Pediatric Dentistry, University of Pittsburgh School of Dental Medicine, 412 Salk Pavilion, Pittsburgh, PA, 15261, USA.
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Sakaue Y, Takenaka S, Ohsumi T, Domon H, Terao Y, Noiri Y. The effect of chlorhexidine on dental calculus formation: an in vitro study. BMC Oral Health 2018; 18:52. [PMID: 29587817 PMCID: PMC5872527 DOI: 10.1186/s12903-018-0517-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 03/19/2018] [Indexed: 11/17/2022] Open
Abstract
Background Chlorhexidine gluconate (CHG) has been proven to be effective in preventing and controlling biofilm formation. At the same time, an increase in calculus formation is known as one of considerable side effects. The purpose of this study was to investigate whether mineral deposition preceding a calculus formation would occur at an early stage after the use of CHG using an in vitro saliva-related biofilm model. Methods Biofilms were developed on the MBEC™ device in brain heart infusion (BHI) broth containing 0.5% sucrose at 37 °C for 3 days under anaerobic conditions. Biofilms were periodically exposed to 1 min applications of 0.12% CHG every 12 h and incubated for up to 2 days in BHI containing a calcifying solution. Calcium and phosphate in the biofilm were measured using atomic absorption spectrophotometry and a phosphate assay kit, respectively. Morphological structure was observed using a scanning electron microscope (SEM), and chemical composition was analyzed with an electron probe microanalyzer (EPMA). Results The concentrations of Ca and Pi following a single exposure to CHG increased significantly compared with the control. Repeatedly exposing biofilms to CHG dose-dependently increased Ca deposition, and the amount of Ca was five times as much as that of the control. Pi levels in CHG-treated biofilms were significantly higher than those from the control group (p < 0.05); however, the influence of the number of exposures was limited. Analyses using an SEM and EPMA showed many clusters containing calcium and phosphate complexes in CHG-treated biofilms. Upon composition analysis of the clusters, calcium was detected at a greater concentration than phosphate. Conclusions Findings suggested that CHG may promote mineral uptake into the biofilm soon after its use. It is necessary to disrupt the biofilm prior to the start of a CHG mouthwash in order to reduce the side effects associated with this procedure. The management of patients is also important.
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Affiliation(s)
- Yuuki Sakaue
- Division of Cariology, Operative Dentistry and Endodontics, Niigata University Graduate School of Medical and Dental Sciences, 2-5274, Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Shoji Takenaka
- Division of Cariology, Operative Dentistry and Endodontics, Niigata University Graduate School of Medical and Dental Sciences, 2-5274, Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Tatsuya Ohsumi
- Division of Cariology, Operative Dentistry and Endodontics, Niigata University Graduate School of Medical and Dental Sciences, 2-5274, Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Hisanori Domon
- Division of Microbiology and Infectious Diseases, Niigata University Graduate School of Medical and Dental Sciences, 2-5274, Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Yutaka Terao
- Division of Microbiology and Infectious Diseases, Niigata University Graduate School of Medical and Dental Sciences, 2-5274, Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Yuichiro Noiri
- Division of Cariology, Operative Dentistry and Endodontics, Niigata University Graduate School of Medical and Dental Sciences, 2-5274, Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan.
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Chenicheri S, R U, Ramachandran R, Thomas V, Wood A. Insight into Oral Biofilm: Primary, Secondary and Residual Caries and Phyto-Challenged Solutions. Open Dent J 2017; 11:312-333. [PMID: 28839480 PMCID: PMC5543615 DOI: 10.2174/1874210601711010312] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 02/15/2017] [Accepted: 03/28/2017] [Indexed: 12/12/2022] Open
Abstract
INTRODUCTION Dental caries is known to be one of the most widespread, chronic infections affecting all ages and populations worldwide. The plethora of oral microbial population paves way for various endogenous infections and plays a crucial role in polymicrobial interactions contributing to biofilm-mediated diseases like caries and periodontal diseases. METHODS Extensive literature survey was conducted using the scientific databases like PubMed, Google scholar, Science Direct, etc. using the key words like dental caries, orodental infections, dental microbes, dental biofilm, secondary caries, phytotherapy, etc. The literature was analyzed thoroughly and critical review was performed. RESULTS The risk of development of secondary caries and residual caries further results in treatment failure. Drug resistance developed by oral microbes and further side effects pose serious hurdles in the current therapeutic strategies. The hyperactivities of various MMPs and the resulting massive ECM degradation are the challenging part in the design of effective therapeutic approaches. Anticariogenic phytotherapy is well appreciated owing to lesser side effects and versatility of their action. But appreciable outcomes regarding the phytochemical bioavailability and bioretention are still challenging. Site-specific delivery of phytoagents at the infected site may enhance the efficiency of these drugs. Accordingly emerging phytodentistry can be promising for the management of secondary and residual caries. CONCLUSION This article presents major cariogens and their mechanisms in initiating and aggravating dental caries. Effectiveness of phytotherapy and different mode of action of phytochemicals against cariogens are outlined. The article also raises major concerns and possibilities of phytochemical based therapeutics to be applied in the clinical arena of caries management.
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Affiliation(s)
- Smitha Chenicheri
- Department of Microbiology, Karpagam University, Coimbatore, Tamil Nadu, India.,Microbiology Division, Biogenix Research Center for Molecular Biology and Applied Sciences, Thiruvananthapuram, Kerala, India.,Department of Microbiology, PMS Dental college and Research Center, Thiruvananthapuram, Kerala, India
| | - Usha R
- Department of Microbiology, Karpagam University, Coimbatore, Tamil Nadu, India
| | - Rajesh Ramachandran
- Microbiology Division, Biogenix Research Center for Molecular Biology and Applied Sciences, Thiruvananthapuram, Kerala, India
| | - Vinoy Thomas
- Department of Materials Science & Engineering, Center for Nanoscale Materials and Biointegration (CNMB), University of Alabama at Birmingham (UAB), Birmingham, Alabama, USA
| | - Andrew Wood
- Department of Materials Science & Engineering, Center for Nanoscale Materials and Biointegration (CNMB), University of Alabama at Birmingham (UAB), Birmingham, Alabama, USA
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Feng X, Zhang N, Xu HHK, Weir MD, Melo MAS, Bai Y, Zhang K. Novel orthodontic cement containing dimethylaminohexadecyl methacrylate with strong antibacterial capability. Dent Mater J 2017; 36:669-676. [PMID: 28652555 DOI: 10.4012/dmj.2016-370] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Orthodontic treatments increase the incidence of white spot lesions. The objectives of this study were to develop an antibacterial orthodontic cement to inhibit demineralization, and to evaluate its enamel shear bond strength and anti-biofilm properties. Novel antibacterial monomer dimethylaminohexadecyl methacrylate (DMAHDM) was synthesized and incorporated into Transbond XT at 0, 1.5 and 3% by mass. Anti-biofilm activity was assessed using a human dental plaque microcosm biofilm model. Shear bond strength and adhesive remnant index were also tested. Biofilm activity precipitously dropped when contacting orthodontic cement with DMAHDM. Orthodontic cement containing 3% DMAHDM significantly reduced biofilm metabolic activity and lactic acid production (p<0.05), and decreased biofilm colony-forming unit (CFU) by two log. Water-aging for 90 days had no adverse influence on enamel shear bond strength (p>0.1). By incorporating DMAHDM into Transbond XT for the first time, the modified orthodontic cement obtained a strong antibacterial capability without compromising the enamel bond strength.
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Affiliation(s)
- Xiaodong Feng
- Division of Dentistry, Beijing Tongren Hospital, Capital Medical University.,Department of Orthodontics, School of Stomatology, Capital Medical University
| | - Ning Zhang
- Department of Orthodontics, School of Stomatology, Capital Medical University
| | - Hockin H K Xu
- Biomaterials & Tissue Engineering Division, Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry.,Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine.,Department of Mechanical Engineering, University of Maryland
| | - Michael D Weir
- Biomaterials & Tissue Engineering Division, Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry
| | - Mary Anne S Melo
- Biomaterials & Tissue Engineering Division, Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry
| | - Yuxing Bai
- Department of Orthodontics, School of Stomatology, Capital Medical University
| | - Ke Zhang
- Department of Orthodontics, School of Stomatology, Capital Medical University
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Mugita N, Nambu T, Takahashi K, Wang PL, Komasa Y. Proteases, actinidin, papain and trypsin reduce oral biofilm on the tongue in elderly subjects and in vitro. Arch Oral Biol 2017; 82:233-240. [PMID: 28662376 DOI: 10.1016/j.archoralbio.2017.04.035] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Revised: 04/27/2017] [Accepted: 04/30/2017] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Dental plaque is a causative factor for oral disease and a potential reservoir for respiratory infection in the elderly. Therefore, there is a critical need for the development of effective methods to remove oral biofilm. The objective of this study was to investigate the effect of proteases on oral biofilm formation andremoval. DESIGN The in vivo effect of actinidin, a cysteine protease, on the removal of tongue coating was assessed after orally taking a protease tablet. Effects of the proteases trypsin, papain and actinidin on Actinomyces monospecies biofilm and multispecies biofilm that was reconstructed using a plaque sample from the tongue coating were investigated using the microtiter plate method. Antimicrobial tests and limited proteolysis of fimbrial shaft proteins were also performed to clarify underlying mechanisms of oral biofilm removal. RESULTS Tablets containing actinidin removed tongue coating in elderly subjects. Oral Actinomyces biofilm was significantly reduced by the proteases papain, actinidin and trypsin. Papain and trypsin effectively digested the major fimbrial proteins, FimP and FimA, from Actinomyces. Actinidin, papain and trypsin reduced multispecies biofilm that was reconstructed in vitro. Papain and trypsin inhibited formation of multispecies biofilm in vitro. CONCLUSIONS This study shows that proteases reduced oral biofilm in vivo in elderly subjects and in vitro, and suggests that protease digests fimbriae and inhibits biofilm formation.
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Affiliation(s)
- Naho Mugita
- Department of Geriatric Dentistry, Graduate School of Dentistry, Osaka Dental University, 8-1 Kuzuha-Hanazono, Hirakata, 573-1121 Japan.
| | - Takayuki Nambu
- Department of Bacteriology, Osaka Dental University, 8-1 Kuzuha-Hanazono, Hirakata, 573-1121 Japan.
| | - Kazuya Takahashi
- Department of Geriatric Dentistry, Osaka Dental University, 8-1 Kuzuha-Hanazono, Hirakata, 573-1121 Japan
| | - Pao-Li Wang
- Department of Bacteriology, Osaka Dental University, 8-1 Kuzuha-Hanazono, Hirakata, 573-1121 Japan
| | - Yutaka Komasa
- Department of Geriatric Dentistry, Osaka Dental University, 8-1 Kuzuha-Hanazono, Hirakata, 573-1121 Japan
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Abdul Razak F, Baharuddin BA, Akbar EFM, Norizan AH, Ibrahim NF, Musa MY. Alternative sweeteners influence the biomass of oral biofilm. Arch Oral Biol 2017; 80:180-184. [PMID: 28448807 DOI: 10.1016/j.archoralbio.2017.04.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 03/18/2017] [Accepted: 04/17/2017] [Indexed: 10/19/2022]
Abstract
OBJECTIVE Compact-structured oral biofilm accumulates acids that upon prolonged exposure to tooth surface, causes demineralisation of enamel. This study aimed to assess the effect of alternative sweeteners Equal Stevia®, Tropicana Slim®, Pal Sweet® and xylitol on the matrix-forming activity of plaque biofilm at both the early and established stages of formation. METHODS Saliva-coated glass beads (sGB) were used as substratum for the adhesion of a mixed-bacterial suspension of Streptococcus mutans, Streptococcus sanguinis and Streptococcus mitis. Biofilms formed on sGB at 3h and 24h represented the early and established-plaque models. The biofilms were exposed to three doses of the sweeteners (10%), introduced at three intervals to simulate the exposure of dental plaque to sugar during three consecutive food intakes. The treated sGB were (i) examined under the SEM and (ii) collected for turbidity reading. The absorbance indicated the amount of plaque mass produced. Analysis was performed comparative to sucrose as control. RESULTS Higher rate of bacterial adherence was determined during the early compared to established phases of formation. Comparative to the sweeteners, sucrose showed a 40% increase in bacterial adherence and produced 70% more plaque-mass. Bacterial counts and SEM micrographs exhibited absence of matrix in all the sweetener-treated biofilms at the early phase of formation. At the established phase, presence of matrix was detected but at significantly lower degree compared to sucrose (p<0.05). CONCLUSION Alternatives sweeteners promoted the formation of oral biofilm with lighter mass and lower bacterial adherence. Hence, suggesting alternative sweeteners as potential antiplaque agents.
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Affiliation(s)
- Fathilah Abdul Razak
- Department of Oral and Craniofacial Sciences, Faculty of Dentistry University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Baizatul Amirah Baharuddin
- Department of Oral and Craniofacial Sciences, Faculty of Dentistry University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Elisya Farha Mohd Akbar
- Department of Oral and Craniofacial Sciences, Faculty of Dentistry University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Amira Hanim Norizan
- Department of Oral and Craniofacial Sciences, Faculty of Dentistry University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Nur Fazilah Ibrahim
- Department of Oral and Craniofacial Sciences, Faculty of Dentistry University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Md Yusoff Musa
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
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Abstract
OBJECTIVES The accumulation of oral bacterial biofilm is the main etiological factor of oral diseases. Recently, electrolyzed hydrogen-rich water (H-water) has been shown to act as an effective antioxidant by reducing oxidative stress. In addition to this general health benefit, H-water has antibacterial activity for disease-associated oral bacteria. However, little is known about the effect of H-water on oral bacterial biofilm. The objective of this study was to confirm the effect of H-water on streptococcal biofilm formation. METHODS In vitro streptococcal biofilm was quantified using crystal violet staining after culture on a polystyrene plate. The effect of H-water on the expression of genes involved in insoluble glucan synthesis and glucan binding, which are critical steps for oral biofilm formation, was evaluated in MS. In addition, we compared the number of salivary streptococci after oral rinse with H-water and that with control tap water. Salivary streptococci were quantified by counting viable colonies on Mitis Salivarius agar-bacitracin. RESULTS Our data showed that H-water caused a significant decrease in in vitro streptococcal biofilm formation. The expression level of the mRNA of glucosyltransferases (gtfB, gtfc, and gtfI) and glucan-binding proteins (gbpC, dblB) were decreased remarkably in MS after H-water exposure for 60s. Furthermore, oral rinse with H-water for 1 week led to significantly fewer salivary streptococci than did that with control tap water. CONCLUSIONS Our data suggest that oral rinse with H-water would be helpful in treating dental biofilm-dependent diseases with ease and efficiency.
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Affiliation(s)
- Jinkyung Kim
- Department of Oral Microbiology and Immunology, School of Dentistry, Kyungpook National University, 2177 Dalgubeol-daero, Daegu, 700-412, South Korea.
| | - Heon-Jin Lee
- Department of Oral Microbiology and Immunology, School of Dentistry, Kyungpook National University, 2177 Dalgubeol-daero, Daegu, 700-412, South Korea.
| | - Su-Hyung Hong
- Department of Oral Microbiology and Immunology, School of Dentistry, Kyungpook National University, 2177 Dalgubeol-daero, Daegu, 700-412, South Korea.
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Santigli E, Leitner E, Wimmer G, Kessler HH, Feierl G, Grube M, Eberhard K, Klug B. Accuracy of commercial kits and published primer pairs for the detection of periodontopathogens. Clin Oral Investig 2016; 20:2515-28. [PMID: 27020914 DOI: 10.1007/s00784-016-1748-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 02/10/2016] [Indexed: 01/26/2023]
Abstract
OBJECTIVES Despite the input of microbiome research, a group of 20 bacteria continues to be the focus of periodontal diagnostics and therapy. The aim of this study was to compare three commercial kits and laboratory-developed primer pairs for effectiveness in detecting such periodontopathogens. MATERIALS AND METHODS Fourteen bacterial mock communities, consisting of 16 randomly assembled bacterial strains, were used as reference standard for testing kits and primers. Extracted DNA from mock communities was analyzed by PCR in-house with specific primers and forwarded for analysis to the manufacturer's laboratory of each of the following kits: ParoCheck®Kit 20, micro-IDent®plus11, and Carpegen® Perio Diagnostik. RESULTS The kits accurately detected Fusobacterium nucleatum, Prevotella intermedia/Prevotella nigrescens, Parvimonas micra, Aggregatibacter actinomycetemcomitans, Campylobacter rectus/showae, Streptococcus mitis, Streptococcus mutans, and Veillonella parvula. The in-house primers for F.nucleatum were highly specific to subtypes of the respective periopathogen. Other primers repeatedly detected oral pathogens not present in the mock communities, indicating reduced specificity. CONCLUSIONS The commercial kits used in this study are reliable tools to support periodontal diagnostics. Whereas the detection profile of the kits is fixed at a general specificity level, the design of primers can be adjusted to differentiate between highly specific strains. In-house primers are more error-prone. Bacterial mock communities can be established as a reference standard for any similar testing. CLINICAL RELEVANCE The tested kits render good results with selected bacterial species. Primers appear to be less useful for routine clinical diagnostics and of limited applicability in research. Basic information about the periodontopathogens identified in this study supports clinical decision-making.
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