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Le PH, Linklater DP, Medina AA, MacLaughlin S, Crawford RJ, Ivanova EP. Impact of multiscale surface topography characteristics on Candida albicans biofilm formation: From cell repellence to fungicidal activity. Acta Biomater 2024; 177:20-36. [PMID: 38342192 DOI: 10.1016/j.actbio.2024.02.006] [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: 09/15/2023] [Revised: 01/21/2024] [Accepted: 02/05/2024] [Indexed: 02/13/2024]
Abstract
While there has been significant research conducted on bacterial colonization on implant materials, with a focus on developing surface modifications to prevent the formation of bacterial biofilms, the study of Candida albicans biofilms on implantable materials is still in its infancy, despite its growing relevance in implant-associated infections. C. albicans fungal infections represent a significant clinical concern due to their severity and associated high fatality rate. Pathogenic yeasts account for an increasing proportion of implant-associated infections, since Candida spp. readily form biofilms on medical and dental device surfaces. In addition, these biofilms are highly antifungal-resistant, making it crucial to explore alternative solutions for the prevention of Candida implant-associated infections. One promising approach is to modify the surface properties of the implant, such as the wettability and topography of these substrata, to prevent the initial Candida attachment to the surface. This review summarizes recent research on the effects of surface wettability, roughness, and architecture on Candida spp. attachment to implantable materials. The nanofabrication of material surfaces are highlighted as a potential method for the prevention of Candida spp. attachment and biofilm formation on medical implant materials. Understanding the mechanisms by which Candida spp. attach to surfaces will allow such surfaces to be designed such that the incidence and severity of Candida infections in patients can be significantly reduced. Most importantly, this approach could also substantially reduce the need to use antifungals for the prevention and treatment of these infections, thereby playing a crucial role in minimizing the possibility contributing to instances of antimicrobial resistance. STATEMENT OF SIGNIFICANCE: In this review we provide a systematic analysis of the role that surface characteristics, such as wettability, roughness, topography and architecture, play on the extent of C. albicans cells attachment that will occur on biomaterial surfaces. We show that exploiting bioinspired surfaces could significantly contribute to the prevention of antimicrobial resistance to antifungal and chemical-based preventive measures. By reducing the attachment and growth of C. albicans cells using surface structure approaches, we can decrease the need for antifungals, which are conventionally used to treat such infections.
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Affiliation(s)
- Phuc H Le
- School of Science, STEM College, RMIT University, Melbourne, VIC 3000, Australia; ARC Research Hub for Australian Steel Manufacturing, Melbourne, VIC 3001, Australia
| | - Denver P Linklater
- School of Science, STEM College, RMIT University, Melbourne, VIC 3000, Australia; ARC Research Hub for Australian Steel Manufacturing, Melbourne, VIC 3001, Australia; Department of Biomedical Engineering, The Graeme Clark Institute, University of Melbourne, Parkville, VIC 3010, Australia
| | - Arturo Aburto Medina
- School of Science, STEM College, RMIT University, Melbourne, VIC 3000, Australia
| | - Shane MacLaughlin
- ARC Research Hub for Australian Steel Manufacturing, Melbourne, VIC 3001, Australia; BlueScope Steel Research, Port Kembla, NSW 2505, Australia
| | - Russell J Crawford
- School of Science, STEM College, RMIT University, Melbourne, VIC 3000, Australia
| | - Elena P Ivanova
- School of Science, STEM College, RMIT University, Melbourne, VIC 3000, Australia; ARC Research Hub for Australian Steel Manufacturing, Melbourne, VIC 3001, Australia.
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Peralta LCF, Almeida NLM, Pontes FML, Rinaldo D, Carneiro CA, Neppelenbroek KH, Lara VS, Porto VC. Silver nanoparticles in denture adhesive: An antimicrobial approach against Candida albicans. J Dent 2023; 131:104445. [PMID: 36773742 DOI: 10.1016/j.jdent.2023.104445] [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: 10/19/2022] [Revised: 01/21/2023] [Accepted: 02/03/2023] [Indexed: 02/11/2023] Open
Abstract
OBJECTIVE To evaluate the antimicrobial potential of silver nanoparticles (Ag NPs) synthesized using three different routes (ultraviolet light, Turkevich, and green chemistry method using Glycine max extract) associated with COREGA® denture powder adhesive. METHODS Heat-cured acrylic resin specimens were treated with different Ag NPs associated with the adhesive (AD + Ag UV, AD + Ag Turk, and AD + Ag Gm groups). As controls, the specimens were treated with a combination of adhesive and nystatin (AD + Nyst group), only adhesive (AD group), or submerged on the surface of the specimens (PBS group). After the treatments, biofilms of C. albicans developed for 3, 6, and 12 h on the specimen surfaces. The biofilm was quantified using colony-forming units per milliliter, colorimetric assay, and confocal laser scanning microscopy. RESULTS Regardless of the period, we observed an inhibition of fungal load and a reduction in metabolic activity and biofilm mass in the resin specimens treated with the combinations AD/Ag NPs, compared to AD and PBS. The antimicrobial action of the AD + Turk and AD + Ag Gm groups was similar than that for the AD + Nyst group in all periods and viability tests, except for the biofilm mass (12 h). CONCLUSIONS The COREGA® adhesive with Ag NPs, mainly those synthesized using the Turkevich and Glycine max methods, showed excellent antimicrobial activity against C. albicans biofilms, maintained for up to 12 h. CLINICAL SIGNIFICANCE The association of Ag NPs to the adhesive can add preventive or therapeutic effects against denture stomatitis, to this prosthetic material.
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Affiliation(s)
- Laura Catalí Ferreira Peralta
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil, 17012-901
| | - Nara Ligia Martins Almeida
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil, 17012-901
| | | | - Daniel Rinaldo
- Department of Chemistry, São Paulo State University (UNESP), Bauru, Brazil
| | - Camila Alves Carneiro
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil, 17012-901
| | - Karin Hermana Neppelenbroek
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil, 17012-901
| | - Vanessa Soares Lara
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil, 17012-901
| | - Vinicius Carvalho Porto
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo (USP), Bauru, Brazil, 17012-901.
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Qadir MI, Bashir H, Ahmad MH. Human Oropharyngeal Candidiasis: From Etiology to Current Treatment. Crit Rev Immunol 2023; 43:15-24. [PMID: 37824374 DOI: 10.1615/critrevimmunol.2023049730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Oral candidiasis is a common but most harmful oral cavity infection caused by yeast-like fungus, this condition is called Oropharyngeal candidiasis. There are various species of candida that are responsible for oral cavity fungal infection including mostly Candida albicans. Different candida infections may be acute and chronic. Cell-mediated immunity, humoral immunity, and granulocytes are the immune factors for the cause of this infection. Different antifungal drugs like nystatin, fluconazole, and amphotericin are used to treat oral cavity fungal infections.
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Affiliation(s)
- Muhammad Imran Qadir
- Institute of Molecular Biology & Biotechnology, Bahauddin Zakariya University, Multan, Pakistan
| | - Hina Bashir
- Institute of Molecular Biology and Biotechnology, Bahauddin Zakaria University, Multan, Pakistan
| | - Muhammad Hammad Ahmad
- Institute of Molecular Biology and Biotechnology, Bahauddin Zakariya University, Multan, Pakistan
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Kostić M, Igić M, Gligorijević N, Nikolić V, Stošić N, Nikolić L. The Use of Acrylate Polymers in Dentistry. Polymers (Basel) 2022; 14:4511. [PMID: 36365504 PMCID: PMC9653800 DOI: 10.3390/polym14214511] [Citation(s) in RCA: 6] [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: 09/27/2022] [Revised: 10/17/2022] [Accepted: 10/21/2022] [Indexed: 03/08/2024] Open
Abstract
The manuscript aimed to review the types of acrylate polymers used in dentistry, as well as their chemical, physical, mechanical, and biological properties. Regarding their consistency and purpose, dental acrylate polymers are divided into hard (brittle), which includes acrylates for the production of plate denture bases, obturator prostheses, epitheses and maxillofacial prostheses, their repairs and lining, and soft (flexible), which are used for lining denture bases in special indications. Concerning the composition and method of polymerization initiation, polymers for the production of denture bases are divided into four types: heat-, cold-, light-, and microwave-polymerized. CAD/CAM acrylate dentures are made from factory blocks of dental acrylates and show optimal mechanical and physical properties, undoubtedly better monomer polymerization and thus biocompatibility, and stability of the shape and colour of the base and dentures. Regardless of the number of advantages that these polymers have to offer, they also exhibit certain disadvantages. Technological development enables the enhancement of all acrylate properties to respond better to the demands of the profession. Special attention should be paid to improving the biological characteristics of acrylate polymers, due to reported adverse reactions of patients and dental staff to potentially toxic substances released during their preparation and use.
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Affiliation(s)
- Milena Kostić
- Department of Prosthodontics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Marko Igić
- Department of Prosthodontics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Nikola Gligorijević
- Department of Prosthodontics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Vesna Nikolić
- Faculty of Technology, University of Niš, 16000 Leskovac, Serbia
| | - Nenad Stošić
- Department of Restorative Dentistry and Endodontics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Ljubiša Nikolić
- Faculty of Technology, University of Niš, 16000 Leskovac, Serbia
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Procópio ALF, Lara VS, Porto VC, Soares S, Fernandes MH, Urban VM, Neppelenbroek KH. Resilient liner modified by antimicrobials for denture stomatitis treatment: A randomized controlled trial. J Dent 2022; 126:104297. [PMID: 36122605 DOI: 10.1016/j.jdent.2022.104297] [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: 04/10/2022] [Revised: 08/31/2022] [Accepted: 09/15/2022] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES This randomized clinical trial evaluated the effectiveness of an interim denture resilient liner (Trusoft) modified with minimum inhibitory concentrations (MICs) of antimicrobial agents for Candida albicans biofilm in the denture stomatitis (DS) treatment. METHODS Forty participants with DS and maxillary complete denture (MCD) wearers were randomly assigned to one of the treatments for 14 days (n=10): nystatin oral suspension (Control-100,000IU/mL; 4 × /day), MCD relined with Trusoft either without (Tru) or with nystatin (Ny) or chlorhexidine diacetate (Chx) at MICs. Cytological smears and mycological quantitative cultures were taken from the palate and denture before treatment (baseline), at the end of treatment (day 14), and at follow-up (days 30, 45, and 60). Photographs of the palate were made at each visit. Data were analyzed by the Cochran and χ2 tests, ANOVA and the Tukey test or the Friedman and Kruskal-Wallis tests (α=0.05). RESULTS Palatal smears of the Ny and Chx groups exhibited no mycelial Candida (0%) on day 14, and, at the 60-day follow-up, it was observed for only 1 participant from Chx group. MCD smears showed reduction in mycelial forms for all groups on day 14 (P<0.05), but this difference was maintained at follow-up only for the relined dentures (P<0.05). Unlike Tru and the control groups, Ny and Chx groups evidenced a significant reduction in CFU/mL values and DS severity throughout the trial (P<0.05). CONCLUSIONS The addition of nystatin and chlorhexidine at MICs to an interim resilient liner is a promising treatment for DS, with better results than those for conventional therapy with nystatin suspension, including the follow-ups. CLINICAL SIGNIFICANCE Compared with conventional topical antifungal therapy, modifying a denture reline material with antimicrobials provided a therapeutic option for denture stomatitis. This non-invasive, straightforward therapeutic approach can be easily adopted by dentists and has the advantage of not requiring patient compliance while maintaining therapeutic concentrations on the denture base.
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Affiliation(s)
- Andréa Lemos Falcão Procópio
- Department of Periodontics and Prosthodontics, Bauru School of Dentistry, University of São Paulo, Al. Octávio Pinheiro Brisola, 9-75, Bauru, SP 17012-901, Brazil
| | - Vanessa Soares Lara
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Vinícius Carvalho Porto
- Department of Periodontics and Prosthodontics, Bauru School of Dentistry, University of São Paulo, Al. Octávio Pinheiro Brisola, 9-75, Bauru, SP 17012-901, Brazil
| | - Simone Soares
- Department of Periodontics and Prosthodontics, Bauru School of Dentistry, University of São Paulo, Al. Octávio Pinheiro Brisola, 9-75, Bauru, SP 17012-901, Brazil
| | - Maria Helena Fernandes
- BoneLab-Laboratory for Bone Metabolism and Regeneration, Faculty of Dental Medicine, University of Porto, Porto, Portugal; Associated Laboratory for Green Chemistry/Network of Chemistry and Technology (LAQV/REQUIMTE), University of Porto, Porto, Portugal
| | | | - Karin Hermana Neppelenbroek
- Department of Periodontics and Prosthodontics, Bauru School of Dentistry, University of São Paulo, Al. Octávio Pinheiro Brisola, 9-75, Bauru, SP 17012-901, Brazil.
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Ashraf H, Gul H, Jamil B, Saeed A, Pasha M, Kaleem M, Khan AS. Synthesis, characterization, and evaluation of the antifungal properties of tissue conditioner incorporated with essential oils-loaded chitosan nanoparticles. PLoS One 2022; 17:e0273079. [PMID: 35984775 PMCID: PMC9390928 DOI: 10.1371/journal.pone.0273079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 08/02/2022] [Indexed: 11/27/2022] Open
Abstract
Purpose This study aims to investigate new tissue conditioner (TC) formulations involving chitosan nanoparticles (CSNPs) and essential oils (EO) for their antifungal potential, release kinetics, and hardness. Materials and methods CSNPs were synthesized, and the separate solutions of CSNP were prepared with two types of EO, i.e., Oregano oil and Lemongrass. The EO was loaded separately in two concentrations (200 μL and 250 μL). The blank and EO-loaded CSNPs were screened against Candida albicans (C. albicans), and their minimum inhibitory concentration was established. GC Reline™ (GC corporation, USA) TC was considered a control group, whereby the four experimental groups were prepared by mixing CSNPs/EO solutions with TC powder. The antifungal effectiveness (C. albicans) and release kinetics behavior (1–6 h, 24 h, 48 h, and 72 h) was investigated. The Shore A hardness of control and experimental groups was evaluated in dry and wet modes (deionized water and artificial saliva). For statistical analysis, SPSS version 22 was used to do a one-way ANOVA post-hoc Tukey’s test. Results Compared to the control group, TCs containing blank CSNPs and CSNPs loaded with EO showed 3 and 5 log reductions in C. albicans growth, respectively. A significantly high antifungal effect was observed with TC containing lemongrass essential oil (200 μL). The continuous release of EO was detected for the first 6 hours, whereas completely stopped after 48 hours. Mean hardness values were highest for dry samples and lowest for samples stored in artificial saliva. The statistically significant difference within and between the study groups was observed in mean and cumulative essential oils release and hardness values of TCs over observed time intervals irrespective of storage media. Conclusion TCs containing essential-oil-loaded CSNPs seem a promising alternative treatment of denture-induced stomatitis, however, a further biological analysis should be taken.
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Affiliation(s)
- Hina Ashraf
- Department of Dental Materials, Army Medical College, National University of Medical Sciences, Islamabad, Pakistan
- Department of Dental Materials, Ayub Medical College, Abbottabad, Pakistan
- * E-mail:
| | - Hashmat Gul
- Department of Dental Materials, Army Medical College, National University of Medical Sciences, Islamabad, Pakistan
| | - Bushra Jamil
- Department of Dental Materials, Army Medical College, National University of Medical Sciences, Islamabad, Pakistan
- Department of Microbiology, BJ Micro Lab, Rawalpindi, Pakistan
| | - Asfia Saeed
- Department of Dental Materials, Army Medical College, National University of Medical Sciences, Islamabad, Pakistan
- Department of Dental Materials, Islamabad Medical & Dental College, Shaheed Zulfiqar Ali Bhutto Medical University, Islamabad, Pakistan
| | - Mehwish Pasha
- Department of Dental Materials, Army Medical College, National University of Medical Sciences, Islamabad, Pakistan
- Department of Dental Materials, Shifa College of Dentistry, Shifa Tameer-e-Millat University, Rawalpindi, Pakistan
| | - Muhammad Kaleem
- Department of Dental Materials, Army Medical College, National University of Medical Sciences, Islamabad, Pakistan
| | - Abdul Samad Khan
- Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
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Garcia CR, Ueda TY, da Silva RA, Cano IP, Saldanha LL, Dokkedal AL, Porto VC, Urban VM, Neppelenbroek KH. Effect of denture liners surface modification with Equisetum giganteum and Punica granatum on Candida albicans biofilm inhibition. Ther Deliv 2022. [PMID: 35195016 DOI: 10.4155/tde-2021-0074] [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: 11/17/2022] Open
Abstract
Aim: This study investigated the effect of denture liners surface modification with Equisetum giganteum (EG) and Punica granatum (PG) on Candida albicans biofilm inhibition supposing its usage as a sustained-release therapeutical delivery system for Candida-associated denture stomatitis. Materials & methods: C. albicans biofilm (SC5314 or ATCC 90028) was formed on soft liners superficially modified by a primer mixed to drugs at minimum inhibitory concentrations (0.100 g for EG and PG or 0.016 g for nystatin per ml of primer). After 24 h, 7 or 14 days, antibiofilm activity was evaluated by colony-forming unit counts. Results: Not all groups were equi-efficient to nystatin after 24 h and 7 days. After 14 days, EG and PG efficacies were not different from nystatin (almost 100% inhibition). Conclusion: The proposed protocol presents a promising option to allopathic drugs for Candida-associated denture stomatitis treatment.
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ERGUN G, ATAOL AS, ŞAHİN Z, SARAÇ N, BAYGAR T, UĞUR A. Antibiofilm Evaluation of Two Different Denture Liners Incorporated with Zirconium Oxide Nanoparticles. Cumhuriyet Dental Journal 2021. [DOI: 10.7126/cumudj.970931] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Tonprasong W, Inokoshi M, Tamura M, Uo M, Wada T, Takahashi R, Hatano K, Shimizubata M, Minakuchi S. Tissue Conditioner Incorporating a Nano-Sized Surface Pre-Reacted Glass-Ionomer (S-PRG) Filler. Materials (Basel) 2021; 14:ma14216648. [PMID: 34772173 PMCID: PMC8588282 DOI: 10.3390/ma14216648] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/23/2021] [Accepted: 11/01/2021] [Indexed: 11/16/2022]
Abstract
We aimed to evaluate the properties of a novel tissue conditioner containing a surface pre-reacted glass-ionomer (S-PRG) nanofiller. Tissue conditioners containing 0 (control), 2.5, 5, 10, 20, or 30 wt% S-PRG nanofiller or 10 or 20 wt% S-PRG microfiller were prepared. The S-PRG nanofillers and microfillers were observed using scanning electron microscopy. The ion release, acid buffering capacity, detail reproduction, consistency, Shore A0 hardness, surface roughness, and Candida albicans adhesion of the tissue conditioners were examined. The results indicated that the nanofiller particles were smaller and more homogeneous in size than the microfiller particles. In addition, Al, B, F, and Sr ions eluted from S-PRG were generally found to decrease after 1 day. Acid neutralization was confirmed in a concentration-dependent manner. The mechanical properties of tissue conditioners containing S-PRG nanofiller were clinically acceptable according to ISO standard 10139-1:2018, although the surface roughness increased with increasing filler content. Conditioners with 5-30 wt% nanofiller had a sublethal effect on C. albicans and reduced fungal adhesion in vitro. In summary, tissue conditioner containing at least 5 wt% S-PRG nanofiller can reduce C. albicans adhesion and has potential as an alternative soft lining material.
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Affiliation(s)
- Watcharapong Tonprasong
- Department of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan; (W.T.); (K.H.); (M.S.); (S.M.)
| | - Masanao Inokoshi
- Department of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan; (W.T.); (K.H.); (M.S.); (S.M.)
- Correspondence:
| | - Muneaki Tamura
- Department of Microbiology, Nihon University School of Dentistry, 1-8-13 Kanda Surugadai, Chiyoda, Tokyo 101-8310, Japan;
| | - Motohiro Uo
- Department of Advanced Biomaterials, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan; (M.U.); (T.W.)
| | - Takahiro Wada
- Department of Advanced Biomaterials, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan; (M.U.); (T.W.)
| | - Rena Takahashi
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan;
| | - Keita Hatano
- Department of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan; (W.T.); (K.H.); (M.S.); (S.M.)
| | - Makoto Shimizubata
- Department of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan; (W.T.); (K.H.); (M.S.); (S.M.)
| | - Shunsuke Minakuchi
- Department of Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan; (W.T.); (K.H.); (M.S.); (S.M.)
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Moraes GS, Cachoeira VS, Alves FMC, Kiratcz F, Albach T, Bueno MG, Neppelenbroek KH, Urban VM. Is there an optimal method to detach Candida albicans biofilm from dental materials? J Med Microbiol 2021; 70. [PMID: 34623230 DOI: 10.1099/jmm.0.001436] [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] [Indexed: 01/15/2023] Open
Abstract
Introduction. Candida albicans can produce a complex, dynamic and resistant biofilm on the surface of dental materials, especially denture base acrylic resins and temporary soft liners. This biofilm is the main aetiological factor for denture stomatitis, an oral inflammatory condition characterized by chronic and diffuse erythema and oedema of the denture bearing mucosa.Gap Statement. There is no consensus in the literature regarding the best method to detach biofilms from dental materials. In order to assess the antifungal efficacy of new materials and treatments, the biofilm needs to be properly detached and quantified.Aim. This study compared different methods of detaching C. albicans biofilm from denture base acrylic resin (Vipi Cril) and temporary soft liner (Softone) specimens.Methodology. Specimens of each material were immersed in an inoculum of C. albicans SC5314 and remained for 90 min in orbital agitation at 75 r.p.m. and 37 °C. After the removal of non-adherent cells, the specimens were immersed in RPMI-1640 medium for 48 h. Biofilm formation was evaluated with confocal laser scanning microscopy (n=5). Then, other specimens (n=7) were fabricated, contaminated and immersed in 3 ml of sterile phosphate-buffered saline (PBS) and vortexed or sonicated for 1, 2, 5, or 10 min to detach the biofilm. The quantification of detached biofilm was performed by colony-forming unit (c.f.u.) ml-1 count. Results were submitted to one-way analysis of variance (ANOVA)/Tukey HSD test (α=0.05).Results. A mature and viable biofilm was observed on the surfaces of both materials. For both materials, there was no significant difference (P>0.05) among detachment methods.Conclusion. Any of the tested methods could be used to detach C. albicans biofilm from hard and soft acrylic materials.
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Affiliation(s)
- Gustavo S Moraes
- Department of Dentistry, State University of Ponta Grossa, Ponta Grossa, PR, Brazil
| | - Victoria S Cachoeira
- Department of Dentistry, State University of Ponta Grossa, Ponta Grossa, PR, Brazil
| | - Fernanda M C Alves
- Department of Dentistry, State University of Ponta Grossa, Ponta Grossa, PR, Brazil
| | - Falyne Kiratcz
- Department of Dentistry, State University of Ponta Grossa, Ponta Grossa, PR, Brazil
| | - Thaís Albach
- Department of Dentistry, State University of Ponta Grossa, Ponta Grossa, PR, Brazil
| | | | - Karin H Neppelenbroek
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - Vanessa M Urban
- Department of Dentistry, State University of Ponta Grossa, Ponta Grossa, PR, Brazil
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Costa JV, Portugal J, Neves CB, Bettencourt AF. Should local drug delivery systems be used in dentistry? Drug Deliv Transl Res 2021. [PMID: 34545538 DOI: 10.1007/s13346-021-01053-x] [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] [Accepted: 08/17/2021] [Indexed: 11/27/2022]
Abstract
In dentistry, the use of biomaterial-based drug delivery systems (DDS) aiming the release of the active compounds directly to the site of action is slowly getting more awareness among the scientific and medical community. Emerging technologies including nanotechnological platforms are offering novel approaches, but the majority are still in the proof-of-concept stage. This study critically reviews the potential use of DDS in anesthesiology, oral diseases, cariology, restorative dentistry, periodontics, endodontics, implantology, fixed and removable prosthodontics, and orthodontics with a special focus on infections. It also stresses the gaps and challenges faced. Despite numerous clinical and pharmacological advantages, some disadvantages of DDS pose an obstacle to their widespread use. The biomaterial's biofunctionality may be affected when the drug is incorporated and may cause an additional risk of toxicity. Also, the release of sub-therapeutic levels of drugs such as antibiotics may lead to microbial resistance. Multiple available techniques for the manufacture of DDS may affect drug release profiles and their bioavailability. If the benefits outweigh the costs, DDS may be potentially used to prevent or treat oral pathologies as an alternative to conventional strategies. A case-by-case approach must be followed.
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Gross M, Ashqar F, Sionov RV, Friedman M, Eliashar R, Zaks B, Gati I, Duanis-Assaf D, Feldman M, Steinberg D. Sustained release varnish containing chlorhexidine for prevention of Streptococcus mutans biofilm formation on voice prosthesis surface: an in vitro study. Int Microbiol 2021; 25:177-187. [PMID: 34505216 DOI: 10.1007/s10123-021-00205-w] [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: 03/24/2021] [Revised: 08/13/2021] [Accepted: 08/20/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVES In this study, we aimed to develop a novel, sustained release varnish (SRV) for voice prostheses (VP) releasing chlorhexidine (CHX), for the prevention of biofilm formation caused by the common oral bacteria Streptococcus mutans on VP surfaces. METHODS This study was performed in an in vitro model as a step towards future in vivo trials. VPs were coated with a SRV containing CHX (SRV-CHX) or SRV alone (placebo-SRV) that were daily exposed to S. mutans. The polymeric materials of SRV were composed of ethylcellulose and PEG-400. Biofilm formation was assessed by DNA quantification (qPCR), crystal violet staining, confocal laser scanning microscopy (CLSM), scanning electron microscopy (SEM), and kinetics experiments. RESULTS The amount of DNA in the biofilms formed by S. mutans on VP surfaces coated once with SRV-CHX (1.024 ± 0.218 ng DNA/piece) was 58.5 ± 8.8% lower than that of placebo-SRV-coated VPs (2.465 ± 0.198 ng DNA/piece) after a 48-h exposure to S. mutans (p = 0.038). Reduced biofilm mass on SRV-CHX-coated VPs was visually confirmed by CLSM and SEM. CV staining of SRV-CHX single-coated VPs that have been exposed to S. mutans nine times showed a 98.1 ± 0.2% reduction in biofilm mass compared to placebo-SRV-coated VPs (p = 0.003). Kinetic experiments revealed that SRV-CHX triple-coated VPs could delay bacterial growth for 23 days. CONCLUSIONS Coating VPs with SRV-CHX has an inhibitory effect on biofilm formation and prevents bacterial growth in their vicinities. This study is a proof-of-principle that paves the way for developing new clinical means for reducing both VPs' bacterial biofilm formation and device failure.
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Affiliation(s)
- Menachem Gross
- Department of Otolaryngology - Head and Neck Surgery, Hadassah Hebrew University Medical Center, P.O.Box 12000, 91120, Jerusalem, Israel. .,Biofilm Research Laboratory, Institute of Dental Sciences, Hebrew University, 91120, Jerusalem, Israel. .,School of Medicine, Hebrew University, Jerusalem, Israel.
| | - Fadi Ashqar
- Department of Otolaryngology - Head and Neck Surgery, Hadassah Hebrew University Medical Center, P.O.Box 12000, 91120, Jerusalem, Israel
| | - Ronit Vogt Sionov
- Biofilm Research Laboratory, Institute of Dental Sciences, Hebrew University, 91120, Jerusalem, Israel
| | - Michael Friedman
- School of Medicine, Hebrew University, Jerusalem, Israel.,School of Pharmacy, Hebrew University, Jerusalem, Israel
| | - Ron Eliashar
- Department of Otolaryngology - Head and Neck Surgery, Hadassah Hebrew University Medical Center, P.O.Box 12000, 91120, Jerusalem, Israel.,School of Medicine, Hebrew University, Jerusalem, Israel
| | - Batya Zaks
- Biofilm Research Laboratory, Institute of Dental Sciences, Hebrew University, 91120, Jerusalem, Israel
| | - Irith Gati
- School of Pharmacy, Hebrew University, Jerusalem, Israel
| | - Danielle Duanis-Assaf
- Biofilm Research Laboratory, Institute of Dental Sciences, Hebrew University, 91120, Jerusalem, Israel
| | - Mark Feldman
- Biofilm Research Laboratory, Institute of Dental Sciences, Hebrew University, 91120, Jerusalem, Israel
| | - Doron Steinberg
- Biofilm Research Laboratory, Institute of Dental Sciences, Hebrew University, 91120, Jerusalem, Israel
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Suchodolski J, Feder-Kubis J, Krasowska A. Antiadhesive Properties of Imidazolium Ionic Liquids Based on (-)-Menthol Against Candida spp. Int J Mol Sci 2021; 22:7543. [PMID: 34299160 DOI: 10.3390/ijms22147543] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/25/2021] [Accepted: 07/12/2021] [Indexed: 01/02/2023] Open
Abstract
Infections with Candida spp. are commonly found in long-time denture wearers, and when under immunosuppression can lead to stomatitis. Imidazolium ionic liquids with an alkyl or alkyloxymethyl chain and a natural (1R,2S,5R)-(-)-menthol substituent possess high antifungal and antiadhesive properties towards C. albicans, C. parapsilosis, C. glabrata and C. krusei. We tested three compounds and found they disturbed fungal plasma membranes, with no significant hemolytic properties. In the smallest hemolytic concentrations, all compounds inhibited C. albicans biofilm formation on acrylic, and partially on porcelain and alloy dentures. Biofilm eradication may result from hyphae inhibition (for alkyl derivatives) or cell wall lysis and reduction of adhesins level (for alkyloxymethyl derivative). Thus, we propose the compounds presented herein as potential anti-fungal denture cleaners or denture fixatives, especially due to their low toxicity towards mammalian erythrocytes after short-term exposure.
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Moraes GS, Albach T, Ramos IE, Kopacheski MG, Cachoeira VS, Sugio CYC, Galvão Arrais CA, Neppelenbroek KH, Urban VM. A novel acrylic resin palatal device contaminated with Candida albicans biofilm for denture stomatitis induction in Wistar rats. J Appl Oral Sci 2021; 29:e20200865. [PMID: 33886943 PMCID: PMC8075290 DOI: 10.1590/1678-7757-2020-0865] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 01/20/2021] [Indexed: 01/24/2023] Open
Abstract
Denture stomatitis is the most frequent oral lesion in removable prosthesis wearers, with high recurrence rates and a complex treatment.
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Affiliation(s)
- Gustavo Simão Moraes
- Universidade Estadual de Ponta Grossa, Departamento de Odontologia, Ponta Grossa, Paraná, Brasil
| | - Thaís Albach
- Universidade Estadual de Ponta Grossa, Departamento de Odontologia, Ponta Grossa, Paraná, Brasil
| | - Isabella Esser Ramos
- Universidade Estadual de Ponta Grossa, Departamento de Odontologia, Ponta Grossa, Paraná, Brasil
| | - Mariana Gomes Kopacheski
- Universidade Estadual de Ponta Grossa, Departamento de Odontologia, Ponta Grossa, Paraná, Brasil
| | | | | | | | | | - Vanessa Migliorini Urban
- Universidade Estadual de Ponta Grossa, Departamento de Odontologia, Ponta Grossa, Paraná, Brasil
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Makvandi P, Josic U, Delfi M, Pinelli F, Jahed V, Kaya E, Ashrafizadeh M, Zarepour A, Rossi F, Zarrabi A, Agarwal T, Zare EN, Ghomi M, Kumar Maiti T, Breschi L, Tay FR. Drug Delivery (Nano)Platforms for Oral and Dental Applications: Tissue Regeneration, Infection Control, and Cancer Management. Adv Sci (Weinh) 2021; 8:2004014. [PMID: 33898183 PMCID: PMC8061367 DOI: 10.1002/advs.202004014] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [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: 10/20/2020] [Revised: 12/12/2020] [Indexed: 05/09/2023]
Abstract
The oral cavity and oropharynx are complex environments that are susceptible to physical, chemical, and microbiological insults. They are also common sites for pathological and cancerous changes. The effectiveness of conventional locally-administered medications against diseases affecting these oral milieus may be compromised by constant salivary flow. For systemically-administered medications, drug resistance and adverse side-effects are issues that need to be resolved. New strategies for drug delivery have been investigated over the last decade to overcome these obstacles. Synthesis of nanoparticle-containing agents that promote healing represents a quantum leap in ensuring safe, efficient drug delivery to the affected tissues. Micro/nanoencapsulants with unique structures and properties function as more favorable drug-release platforms than conventional treatment approaches. The present review provides an overview of newly-developed nanocarriers and discusses their potential applications and limitations in various fields of dentistry and oral medicine.
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Affiliation(s)
- Pooyan Makvandi
- Chemistry Department, Faculty of ScienceShahid Chamran University of AhvazAhvaz6153753843Iran
| | - Uros Josic
- Department of Biomedical and Neuromotor SciencesUniversity of BolognaVia San Vitale 59Bologna40125Italy
| | - Masoud Delfi
- Department of Chemical SciencesUniversity of Naples “Federico II”Complesso Universitario Monte S. Angelo, Via CintiaNaples80126Italy
| | - Filippo Pinelli
- Department of Chemistry, Materials and Chemical EngineeringPolitecnico di Milano Technical UniversityMilano20133Italy
| | - Vahid Jahed
- Biomedical Engineering Division, Faculty of Chemical EngineeringTarbiat Modares UniversityTehranIran
| | - Emine Kaya
- Faculty of DentistryIstanbul Okan UniversityTuzla CampusTuzlaIstanbul34959Turkey
| | - Milad Ashrafizadeh
- Faculty of Engineering and Natural SciencesSabanci UniversityOrta Mahalle, Üniversite Caddesi No. 27, OrhanlıTuzlaIstanbul34956Turkey
- Sabanci University Nanotechnology Research and Application Center (SUNUM)TuzlaIstanbul34956Turkey
| | - Atefeh Zarepour
- Sabanci University Nanotechnology Research and Application Center (SUNUM)TuzlaIstanbul34956Turkey
| | - Filippo Rossi
- Department of Chemistry, Materials and Chemical EngineeringPolitecnico di Milano Technical UniversityMilano20133Italy
| | - Ali Zarrabi
- Sabanci University Nanotechnology Research and Application Center (SUNUM)TuzlaIstanbul34956Turkey
| | - Tarun Agarwal
- Department of BiotechnologyIndian Institute of Technology KharagpurKharagpurWest Bengal721302India
| | | | - Matineh Ghomi
- Chemistry Department, Faculty of ScienceShahid Chamran University of AhvazAhvaz6153753843Iran
| | - Tapas Kumar Maiti
- Department of BiotechnologyIndian Institute of Technology KharagpurKharagpurWest Bengal721302India
| | - Lorenzo Breschi
- Department of Biomedical and Neuromotor SciencesUniversity of BolognaVia San Vitale 59Bologna40125Italy
| | - Franklin R Tay
- The Dental College of GeorgiaAugusta University1430 John Wesley Gilbert DriveAugustaGA30192USA
- The Graduate SchoolAugusta UniversityAugustaGA30912USA
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SÁnchez-Aliaga A, Farago PV, MichÉl MD, Sugio CYC, Neppelenbroek KH, Urban VM. Surface morphology and in vitro leachability of soft liners modified by the incorporation of antifungals for denture stomatitis treatment. J Appl Oral Sci 2021; 28:e20200639. [PMID: 33656098 PMCID: PMC7934282 DOI: 10.1590/1678-7757-2020-0639] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 12/08/2020] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE To evaluate the surface morphology and in vitro leachability of temporary soft linings modified by the incorporation of antifungals in minimum inhibitory concentrations (MIC) for Candida albicans biofilm. METHODOLOGY Specimens of soft lining materials Softone and Trusoft were made without (control) or with the addition of nystatin (Ny), miconazole (Mc), ketoconazole (Ke), chlorhexidine diacetate (Chx), or itraconazole (It) at their MIC for C. albicans biofilm. The surface analyses were performed using Confocal laser scanning microscopy after 24 h, 7 days, or 14 days of immersion in distilled water at 37ºC. In vitro leachability of Chx or Ny from the modified materials was also measured using Ultraviolet visible spectroscopy for up to 14 days of immersion in distilled water at 37ºC. Data (μg/mL) were submitted to ANOVA 1-factor/Bonferroni (α=0.05). RESULTS Softone had a more irregular surface than Trusoft. Morphological changes were noted in both materials with increasing immersion time, particularly, in those containing drugs. Groups containing Chx and It presented extremely porous and irregular surfaces. Both materials had biexponential release kinetics. Softone leached a higher concentration of the antifungals than Trusoft (p=0.004), and chlorhexidine was released at a higher concentration than nystatin (p<0.001). CONCLUSIONS The surface of the soft lining materials changed more significantly with the addition of Chx or It. Softone released a higher concentration of drugs than Trusoft did, guiding the future treatment of denture stomatitis.
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Affiliation(s)
- Adelaida SÁnchez-Aliaga
- Universidade Estadual de Ponta Grossa, Departamento de Odontologia, Ponta Grossa, Paraná, Brasil
| | - Paulo Vitor Farago
- Universidade Estadual de Ponta Grossa, Departamento de Ciências Farmacêuticas, Ponta Grossa, Paraná, Brasil
| | - Milton Domingos MichÉl
- Universidade Estadual de Ponta Grossa, Departamento de Engenharia de Materiais, Ponta Grossa, Paraná, Brasil
| | - Carolina Yoshi Campos Sugio
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Prótese e Periodontia, Bauru, São Paulo, Brasil
| | - Karin Hermana Neppelenbroek
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Prótese e Periodontia, Bauru, São Paulo, Brasil
| | - Vanessa Migliorini Urban
- Universidade Estadual de Ponta Grossa, Departamento de Odontologia, Ponta Grossa, Paraná, Brasil
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Shaikh M, Alnazzawi A, Habib S, Lone M, Zafar M. Therapeutic Role of Nystatin Added to Tissue Conditioners for Treating Denture-Induced Stomatitis: A Systematic Review. Prosthesis 2021; 3:61-74. [DOI: 10.3390/prosthesis3010007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Denture-induced stomatitis (DIS) represents a pathological condition caused by ill-fitting dentures trauma, manifested as inflammation of the palatal tissue beneath the denture. The fungal infections are the principal contributory factors to DIS. Although the aetiology of DIS is multifactorial, the Candida albicans fungal infection remains the main cause. The objective of the present systematic review was to evaluate the latest literature on the addition of nystatin into the tissue conditioners (TCs) in the management of DIS. To search the published literature about “the addition of nystatin in TCs for treating DIS”, electronic databases (PubMed (National library of medicine) and Cochrane Library (Wiley)) were searched (from 1975 until December 2020) using different keywords. Various studies described the effectiveness and efficacy of incorporating nystatin into several TCs. The present systematic review reported that the addition of nystatin is beneficial, with slight or no consequences on both the mechanical and physical features of TCs. Adding nystatin to various TCs for treating DIS can be suggested.
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18
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Bassi RC, Boriollo MFG. Amphotericin B, fluconazole, and nystatin as development inhibitors of Candida albicans biofilms on a dental prosthesis reline material: Analytical models in vitro. J Prosthet Dent 2020; 127:320-330. [PMID: 33279153 DOI: 10.1016/j.prosdent.2020.10.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 10/14/2020] [Accepted: 10/14/2020] [Indexed: 11/15/2022]
Abstract
STATEMENT OF PROBLEM The use of antifungals has been suggested during the treatment of denture stomatitis associated with Candida albicans biofilms. However, how time, material surface, and substrates present during adhesion and biofilm development can influence clinical treatment is unclear. PURPOSE The purpose of this in vitro study was to investigate the growth kinetics of C. albicans biofilms on surfaces of specimens under the influence of adsorbed films and to evaluate the antibiofilm efficacy of antifungal agents: amphotericin B, fluconazole, and nystatin. MATERIAL AND METHODS Specimens of Silagum-Comfort Soft Relining were submerged in preconditioning systems: phosphate-buffered saline, artificial saliva, fetal bovine serum, and artificial saliva+fetal bovine serum. Planktonic cells were incubated (phosphate-buffered saline+specimens) for 1.5 hours (adhesion phase) and washed with phosphate-buffered saline solution. The specimens were then incubated (YNB+glucose) for 8, 24, and 48 hours (initial, intermediate, and maturation phases). The biofilm sessile minimum inhibitory concentration was determined by the broth microdilution method (7.81 to 500 μg/mL). The metabolic activity of the biofilms was tested by colorimetric assay (cell metabolic activity). Cell viability, relative biomass (μm3), and the thickness of the biofilm (μm) were evaluated by confocal laser scanning microscopy. RESULTS The highest bioactivity was recorded in the presence of fetal bovine serum. Biofilms treated with fluconazole and amphotericin B were partially inhibited in a dose-dependent manner. Nystatin inhibited metabolic activity mainly from ≥15.63 or 62.5 μg/mL. Variations in magnitude parameters (relative biomass and thickness) were observed depending on the development phases of biofilms, whereas biological parameters (percentage of nonviable cells) were constant throughout the formation of C. albicans biofilms. CONCLUSIONS The data suggest that partial (fluconazole and amphotericin B) or more effective (nystatin) reduction of metabolic activity of C. albicans biofilms occurred depending on the time and the antifungal and its concentrations.
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Affiliation(s)
- Rodrigo C Bassi
- Graduate student, Graduate Program in Oral Biology, Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas (FOP/UNICAMP), Piracicaba, SP, Brazil.
| | - Marcelo F G Boriollo
- Professor and Researcher, Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas (FOP/UNICAMP), Piracicaba, SP, Brazil
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Homsiang W, Kamonkhantikul K, Arksornnukit M, Takahashi H. Effect of zinc oxide nanoparticles incorporated into tissue conditioner on antifungal, physical, and mechanical properties. Dent Mater J 2020; 40:481-486. [PMID: 33268694 DOI: 10.4012/dmj.2020-095] [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] [Indexed: 11/23/2022]
Abstract
This study evaluated the antifungal, physical, and mechanical properties of tissue conditioner incorporated with different amounts of zinc oxide nanoparticles (ZnOnps) at different storage times (0, 7, and 14 days). Specimens of 0, 5, 10, 15 wt% ZnOnps, or 15 wt% nystatin incorporated into tissue conditioner were fabricated (control, 5Zn, 10Zn, 15Zn, and Nys). The direct contact test (n=6) was performed to evaluate the antifungal effect against C. albicans suspension. The penetration depth (n=6) and tensile bond strength (n=8) were evaluated following ISO 13139. The 15Zn significantly reduced C. albicans cell number compared with control at all storage times (p<0.001). The penetration depths and tensile bond strengths of the 5Zn, 10Zn, 15Zn, and Nys were not significantly different compared with control at all storage times (p>0.05). In conclusion, the 15Zn provides antifungal effect up to 14 days without adverse effects on penetration depth and tensile bond strength.
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Affiliation(s)
- Woraporn Homsiang
- Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University
| | - Krid Kamonkhantikul
- Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University
| | | | - Hidekazu Takahashi
- Department of Oral Biomaterials Engineering, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU)
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Maluf CV, Janott-Sarlo CA, Bertolini MDM, Menezes LR, Lourenço EJV, Telles DDM. In vitro evaluation of physicochemical properties of soft lining resins after incorporation of chlorhexidine. J Prosthet Dent 2020; 124:615.e1-615.e7. [PMID: 32540125 DOI: 10.1016/j.prosdent.2020.03.027] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 03/16/2020] [Accepted: 03/17/2020] [Indexed: 02/05/2023]
Abstract
STATEMENT OF PROBLEM Incorporating chlorhexidine into soft lining materials has been suggested to reduce biofilm development on the material surface and treat denture stomatitis. However, evaluation of the physicochemical properties of this material is necessary. PURPOSE The purpose of this in vitro study was to evaluate the physicochemical properties of resin-based denture soft lining materials modified with chlorhexidine diacetate (CDA). MATERIAL AND METHODS Two soft lining resins were tested, one based on polymethyl methacrylate (PMMA) and the other on polyethyl methacrylate (PEMA), into which 0.5%, 1.0%, or 2.0% of CDA was incorporated; the control group had no CDA. The specimens were stored for 2 hours, 48 hours, 7, 14, 21, and 28 days and then analyzed for polymer crystallinity, Shore A hardness, degree of monomer conversion, residual monomer leaching, and CDA release. Data were analyzed by using a 3-way ANOVA and the Tukey HSD test (α=.05). RESULTS The polymer crystallinity of PEMA and PMMA did not change after CDA incorporation. Shore A hardness increased over time, but not for any CDA concentrations tested after 28 days (P>.05). Considering the degree of conversion, PMMA-based resin showed no statistically significant difference (P>.05). However, PEMA-based resin showed a significant decrease (P<.05), which was reflected in a significant increase in residual monomer leaching from PEMA-based resin with the incorporation of 0.5% and 1.0% CDA (P<.05), mainly in the first 48 hours. PMMA-based resin showed no change in monomer leaching (P>.05). For both resins, the CDA release kinetics were related to monomer leaching; for PEMA-based resin, the values were significantly higher in the first 48 hours (P<.05), and for PMMA-based resin, the values were more sustained up to the last day of analysis. CONCLUSIONS The incorporation of CDA did not affect the physicochemical properties of soft resins. The properties of PMMA were better than those of PEMA.
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Affiliation(s)
- Caroline Vieira Maluf
- Postdoctoral student, Department of Prosthodontics, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | | | | | - Lívia Rodrigues Menezes
- Adjunct Professor, Institute of Macromolecules Eloisa Mano, Rio de Janeiro Federal University, Rio de Janeiro, Brazil
| | | | - Daniel de Moraes Telles
- Full Professor, Department of Prosthodontics, Rio de Janeiro State University, Rio de Janeiro, Brazil.
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Sugio CYC, Garcia AAMN, Albach T, Moraes GS, Bonfante EA, Urban VM, Neppelenbroek KH. Candida-Associated Denture Stomatitis and Murine Models: What Is the Importance and Scientific Evidence? J Fungi (Basel) 2020; 6:jof6020070. [PMID: 32456172 PMCID: PMC7344758 DOI: 10.3390/jof6020070] [Citation(s) in RCA: 7] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/12/2020] [Accepted: 05/18/2020] [Indexed: 02/07/2023] Open
Abstract
Considering the high prevalence and recurrence of Candida-associated denture stomatitis (CADS), in vivo studies in animal models are necessary before those in humans to evaluate new therapeutic strategies. This study aimed to review the literature on murine models of CADS induction using acrylic intraoral devices simulating dentures. Rats are recommended as experimental animals in these models as well as the adoption of a pasty diet. For maintenance in the proper position during the experiments, intraoral appliances must be obtained by individual impressions, using and retained exclusively by cementation on the molars. The region of interest for histopathological analysis was standardized as that corresponding to the area between the first molars. However, there is no consensus among the studies on the CADS induction rat models in relation to the Candida albicans inoculation and need for immunosuppression and/or administration of antibacterial drugs of animals. The greatest difficulty of the available models refers to maintaining the course of the lesion for a sufficient period to evaluate the effectiveness of the proposed treatment, considering the rapid and efficient murine immune response to candidal colonization. Therefore, future studies are necessary for the development of a robust and reproducible CADS model.
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Affiliation(s)
- Carolina Yoshi Campos Sugio
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, Bauru, SP 17012-901, Brazil; (C.Y.C.S.); (A.A.M.N.G.); (E.A.B.)
| | - Amanda Aparecida Maia Neves Garcia
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, Bauru, SP 17012-901, Brazil; (C.Y.C.S.); (A.A.M.N.G.); (E.A.B.)
| | - Thaís Albach
- Department of Dentistry, State University of Ponta Grossa, Avenida General Carlos Cavalcanti, 4748, Uvaranas, Ponta Grossa, PR 84030-900, Brazil; (T.A.); (G.S.M.); (V.M.U.)
| | - Gustavo Simão Moraes
- Department of Dentistry, State University of Ponta Grossa, Avenida General Carlos Cavalcanti, 4748, Uvaranas, Ponta Grossa, PR 84030-900, Brazil; (T.A.); (G.S.M.); (V.M.U.)
| | - Estevam Augusto Bonfante
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, Bauru, SP 17012-901, Brazil; (C.Y.C.S.); (A.A.M.N.G.); (E.A.B.)
| | - Vanessa Migliorini Urban
- Department of Dentistry, State University of Ponta Grossa, Avenida General Carlos Cavalcanti, 4748, Uvaranas, Ponta Grossa, PR 84030-900, Brazil; (T.A.); (G.S.M.); (V.M.U.)
| | - Karin Hermana Neppelenbroek
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, Bauru, SP 17012-901, Brazil; (C.Y.C.S.); (A.A.M.N.G.); (E.A.B.)
- Correspondence: ; Tel.: +55-14-3235-8245; Fax: +55-14-3235-8277
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Maluf CV, Peroni LV, Menezes LR, Coutinho W, Lourenço EJV, Telles DDM. Evaluation of the physical and antifungal effects of chlorhexidine diacetate incorporated into polymethyl methacrylate. J Appl Oral Sci 2020; 28:e20190039. [PMID: 31939520 PMCID: PMC6919199 DOI: 10.1590/1678-7757-2019-0039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 08/12/2019] [Indexed: 11/25/2022] Open
Abstract
This study aimed to evaluate the physical properties and antifungal activities of polymethyl methacrylate (PMMA) acrylic resins after the incorporation of chlorhexidine diacetate salt (CDA).
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Affiliation(s)
- Caroline Vieira Maluf
- Universidade do Estado do Rio de Janeiro, Departamento de Prótese Dentária, Rio de Janeiro, Rio de Janeiro, Brasil
| | - Luciana Vieira Peroni
- Universidade do Estado do Rio de Janeiro, Departamento de Prótese Dentária, Rio de Janeiro, Rio de Janeiro, Brasil
| | - Lívia Rodrigues Menezes
- Universidade Federal do Rio de Janeiro, Instituto de Macromoléculas Eloisa Mano, Rio de Janeiro, Rio de Janeiro, Brasil
| | - Wagner Coutinho
- Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brasil
| | - Eduardo José Veras Lourenço
- Universidade do Estado do Rio de Janeiro, Departamento de Prótese Dentária, Rio de Janeiro, Rio de Janeiro, Brasil
| | - Daniel de Moraes Telles
- Universidade do Estado do Rio de Janeiro, Departamento de Prótese Dentária, Rio de Janeiro, Rio de Janeiro, Brasil
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Krishnamoorthy G, Narayana AI, Peralam PY, Balkrishanan D. To study the effect of Cocos nucifera oil when incorporated into tissue conditioner on its tensile strength and antifungal activity: An in vitro study. J Indian Prosthodont Soc 2019; 19:225-232. [PMID: 31462861 PMCID: PMC6685345 DOI: 10.4103/jips.jips_387_18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 12/05/2018] [Accepted: 04/26/2019] [Indexed: 11/17/2022] Open
Abstract
Aim: This study aims to test the tensile strength and growth of Candida albicans on Viscogel tissue conditioner when incorporated with coconut oil (CCO) and to compare its efficacy with other antifungal agents. Settings and Design: Evaluative - In-vitro study design. Materials and Methods: Fifty dumbbell-shaped samples (n = 10) of Viscogel tissue conditioner were fabricated according to ASTM standard and were classified into 5 groups (10% CCO, 30% w/w tea tree oil, 5% w/w fluconazole, 0.03% w/w silver nanoparticles, and plain tissue conditioner). These samples were compared and evaluated for their tensile strength. Further to test the antifungal activity, a total of 60 samples (n = 15) were fabricated, each group (n = 15) was further divided into three subgroups (n = 5), namely 24-h, 3-day, and 5-day period, which were inoculated in sabouraud dextrose agar plate to test for the growth of C. albicans. Statistical Analysis Used: Oneway ANOVA and post hoc Tukey honestly significant difference test. Results: 10% w/w CCO yielded a mean tensile strength of 20.06 as compared to the plain tissue conditioner which showed a mean tensile strength of 17.81. Similarly, 10% w/w CCO incorporated into Viscogel tissue conditioner showed a significant reduction in the colonization of C. albicans on the 5th day. Conclusions: 10% w/w of CCO when mixed with Viscogel tissue conditioner showed a significant reduction in the growth of C. albicans, and addition of the same increased the tensile strength of the tissue conditioner.
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Affiliation(s)
- Gayathri Krishnamoorthy
- Department of Prosthodontics and Crown and Bridge, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Aparna I Narayana
- Department of Prosthodontics and Crown and Bridge, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Prakash Yegneswaran Peralam
- Department of Microbiology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Dhanasekar Balkrishanan
- Department of Prosthodontics and Crown and Bridge, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
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de Fátima Souto Maior L, Maciel PP, Ferreira VYN, de Lima Gouveia Dantas C, de Lima JM, Castellano LRC, Batista AUD, Bonan PRF. Antifungal activity and Shore A hardness of a tissue conditioner incorporated with terpinen-4-ol and cinnamaldehyde. Clin Oral Investig 2019; 23:2837-2848. [PMID: 31111285 DOI: 10.1007/s00784-019-02925-w] [Citation(s) in RCA: 10] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 04/30/2019] [Indexed: 11/29/2022]
Abstract
PURPOSE This study investigated the anti-Candida activity and the Shore A hardness of a tissue conditioner (Softone™) modified by incorporation of terpinen-4-ol and cinnamaldehyde. MATERIAL AND METHODS Agar diffusion, microdilution, and mechanism of action methods were performed to determine to evaluate the antifungal activity of phytoconstituents. Then, phytoconstituents in varying concentrations were incorporated into the tissue conditioner. The anti-Candida effect of the modified conditioner was evaluated through agar punch well and biofilm formation methods. Shore A hardness of the experimental liners was evaluated after baseline, 24 h, 48 h, 4 days, and 7 days immersion on artificial saliva. RESULTS The phytoconstituents incorporated into Softone showed completely inhibited fungal growth in concentrations of 20-40% and did not present significant antifungal activity until their concentrations where higher than 5%. There were differences between non-modified Softone and M5, M10, C10, and T10% (p < 0.05). The groups containing 10-40% of cinnamaldehyde incorporated into Softone were able to completely inhibit the biofilm. Concentrations below 40% of terpinen-4-ol showed unsatisfactory biofilm inhibition. The T40% and C40% groups presented the lowest Shore A hardness values. Hardness values from groups T40% at 7 days (p = 0.476); C40% at 4 days (p = 0.058); and T20% (p = 0.058), C20% (p = 0.205), T30% (p = 0.154), and C30% (p = 0.874) after 48 h did not differ from the control group. CONCLUSIONS Cinnamaldehyde incorporated into Softone inhibited Candida biofilm formation at concentrations of 10-40%, being more effective than terpinen-4-ol modification despite of halo inhibition observed by both products. CLINICAL RELEVANCE All modifications showed a very similar pattern of hardness being useful for clinical practice.
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Affiliation(s)
- Laura de Fátima Souto Maior
- School of Dentistry, Federal University of Paraiba, Castelo Branco, Joao Pessoa, Paraiba, Brazil. .,Dentistry Post-Graduation Program, Federal University of Paraiba, Campus I / Cidade Universitaria, Joao Pessoa, Paraiba, Brazil.
| | - Panmella Pereira Maciel
- School of Dentistry, Federal University of Paraiba, Castelo Branco, Joao Pessoa, Paraiba, Brazil.,Dentistry Post-Graduation Program, Federal University of Paraiba, Campus I / Cidade Universitaria, Joao Pessoa, Paraiba, Brazil
| | - Victor Yuri Nicolau Ferreira
- School of Dentistry, Federal University of Paraiba, Castelo Branco, Joao Pessoa, Paraiba, Brazil.,Dentistry Post-Graduation Program, Federal University of Paraiba, Campus I / Cidade Universitaria, Joao Pessoa, Paraiba, Brazil
| | - Cíntia de Lima Gouveia Dantas
- School of Dentistry, Federal University of Paraiba, Castelo Branco, Joao Pessoa, Paraiba, Brazil.,Dentistry Post-Graduation Program, Federal University of Paraiba, Campus I / Cidade Universitaria, Joao Pessoa, Paraiba, Brazil
| | - Jeferson Muniz de Lima
- School of Dentistry, Federal University of Paraiba, Castelo Branco, Joao Pessoa, Paraiba, Brazil.,Dentistry Post-Graduation Program, Federal University of Paraiba, Campus I / Cidade Universitaria, Joao Pessoa, Paraiba, Brazil
| | - Lúcio Roberto Cançado Castellano
- School of Dentistry, Federal University of Paraiba, Castelo Branco, Joao Pessoa, Paraiba, Brazil.,Dental Graduation Program and Health Technical School, Federal University of Paraiba, Joao Pessoa, Brazil
| | - André Ulisses Dantas Batista
- School of Dentistry, Federal University of Paraiba, Castelo Branco, Joao Pessoa, Paraiba, Brazil.,Dental Graduation Program and Department of Restorative Dentistry, Federal University of Paraiba, Joao Pessoa, Brazil
| | - Paulo Rogério Ferreti Bonan
- School of Dentistry, Federal University of Paraiba, Castelo Branco, Joao Pessoa, Paraiba, Brazil.,Dental Graduation Program and Department of Clinic and Social Dentistry, Federal University of Paraiba, Joao Pessoa, Brazil
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Albrecht N, DA Silva Fidalgo TK, DE Alencar MJS, Maia LC, Urban VM, Neppelenbroek KH, Reis KR. Peel bond strength and antifungal activity of two soft denture lining materials incorporated with 1% chlorhexidine diacetate. Dent Mater J 2018; 37:725-733. [PMID: 29925728 DOI: 10.4012/dmj.2017-005] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Two soft denture lining materials (SC-Soft Confort and TS-Trusoft) were investigated with and without the addition of 1.0% of chlorhexidine diacetate (1.0% CHX). To assess peel bond strength, specimens (75×10×6 mm) were submitted to a peel test at 10 mm/min immediately and after 24 h. To evaluate Candida albicans growth inhibition, disc of specimens (10×3 mm) were immersed in a solution with 3×106 CFU/mL of C. albicans, and spectral measurements were made following immersion in MTT solution for 2, 4, and 6 days. The agar diffusion test was performed by investigating the diameters of inhibition zones around the disc of specimens (10×3 mm)after 48 h. Data were submitted to statistical analysis (α=0.05) and the failure modes were visually classified. The incorporation of 1.0% CHX significantly decreased the peel bond strength for TS (p=0.001) and SC (p=0.005) for immediate test and for TS after 24 h (p=0.010), but not for SC. C. albicans growth was decreased for both materials over time (p<0.05). SC presented inhibition zones approximately 2.0 times larger than TS. The incorporation of 1.0% CHX inhibited fungal growth without impairment to the peel bond strength for SC after 24 h.
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Affiliation(s)
- Nathalia Albrecht
- Department of Prosthodontics and Dental Materials, Federal University of Rio de Janeiro, School of Dentistry
| | | | | | - Lucianne Cople Maia
- Department of Pediatric Dentistry and Orthodontics, Federal University of Rio de Janeiro, School of Dentistry
| | | | | | - Kátia Rodrigues Reis
- Department of Prosthodontics and Dental Materials, Federal University of Rio de Janeiro, School of Dentistry
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Hotta J, Garlet GP, Cestari TM, Lima JFM, Porto VC, Urban VM, Neppelenbroek KH. In vivo biocompatibility of an interim denture resilient liner containing antifungal drugs. J Prosthet Dent 2018; 121:135-142. [PMID: 30646999 DOI: 10.1016/j.prosdent.2018.02.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 02/01/2018] [Accepted: 02/01/2018] [Indexed: 10/28/2022]
Abstract
STATEMENT OF PROBLEM Antifungal agents incorporated into interim denture resilient liners have been suggested as an adjunct treatment for denture stomatitis (DS). However, before applying this protocol to humans, biocompatibility analysis of such drugs in animal models is required. PURPOSE The purpose of this animal study was to evaluate the in vivo biocompatibility of an interim resilient liner modified with minimum inhibitory concentrations (MICs) of antifungal drugs for Candida albicans biofilm. MATERIAL AND METHODS Sixty Wistar rats were divided into 6 groups (n=5): PC=positive control/no protocol; IOD (intraoral device)=rats using an acrylic resin palatal device (PD); Tru=rats using a PD relined with Trusoft; and Ny (nystatin), Chx (chlorhexidine diacetate), and Ke (ketoconazole) groups=rats using a PD relined with Trusoft + drug MICs. The rats were sacrificed at 7 or 14 days of trial. Histopathological qualitative analysis was performed by comparing photomicrographs of histological sections of the intermolar region. Morphological changes in the epithelium and keratin were quantitatively analyzed by computerized planimetry, and data were analyzed by using 2-way ANOVA and the Tukey HSD test (α=.05). RESULTS Quantitative analysis showed that only PD containing Ke significantly decreased the thickness and area of the keratin compared with the other groups (P<.001), which showed no differences between each other (P>.05). These results agreed with those of qualitative analysis. CONCLUSIONS Incorporation of MICs of Ny and Chx in Trusoft did not induce histopathological changes in the rat palatal mucosa, suggesting the in vivo biocompatibility of this DS treatment.
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Affiliation(s)
- Juliana Hotta
- Postdoctoral student, Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Gustavo Pompermeier Garlet
- Associate Professor, Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Tania Mary Cestari
- Specialized Laboratory Technician, Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | | | - Vinícius Carvalho Porto
- Associate Professor, Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - Vanessa Migliorini Urban
- Assistant Professor, Department of Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
| | - Karin Hermana Neppelenbroek
- Associate Professor, Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil.
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27
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Baygar T, Ugur A, Sarac N, Balci U, Ergun G. Functional denture soft liner with antimicrobial and antibiofilm properties. J Dent Sci 2017; 13:213-219. [PMID: 30895123 PMCID: PMC6388823 DOI: 10.1016/j.jds.2017.10.002] [Citation(s) in RCA: 9] [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: 08/15/2017] [Revised: 10/13/2017] [Indexed: 11/25/2022] Open
Abstract
Background/purpose Denture soft liners, especially used for elders who have poor disinfection habits, provide a favourable environment for accumulation and colonization of microorganisms. This in vitro study is aimed to investigate the effectiveness of natural carvacrol incorporation into soft lining material on the inhibition of oral pathogens. Materials and methods Antimicrobial susceptibility of carvacrol was primarily determined by disc diffusion method. Soft lining material was prepared as recommended by the manufacturer and 10 μL carvacrol was added aseptically to the soft liner discs. Inhibition zones for the control discs without carvacrol (C) and carvacrol-incorporated discs (CL) were determined by disc diffusion method. The biofilm inhibition percentages of carvacrol on soft liner was determined by MTT assay and also observed by Scanning Electron Microscopy (SEM). Results Carvacrol displayed great antimicrobial activity for yeast, Gram-negative and Gram-positive strains. The highest inhibition zone of carvacrol (41.33 ± 1.53 mm) was measured for Bacillus subtilis strain which is followed by Candida albicans and Streptococcus sanguis (34.00 ± 1.73 mm and 32.33 ± 0.58 mm, respectively). The inhibition zones were also similar for soft liner discs with carvacrol, with the highest inhibition zones against B. subtilis, Streptococcus mutans and C. albicans (43.67 ± 0.58 mm, 40.33 ± 0.58 mm and 38.33 ± 1.15 mm, respectively). Incorporation of carvacrol into the soft liner decreased (98.03 ± 0.2%) of the biofilm formation for C. albicans. Conclusion Carvacrol-incorporation obviously decreased the colonization and plaque formation of oral pathogens, especially C. albicans accumulation. Carvacrol may be useful as a promising agent for antibacterial and antifungal management for denture soft lining materials.
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Affiliation(s)
- Tuba Baygar
- Material Research Laboratory, Research Laboratories Center, Mugla Sitki Kocman University, Mugla, Turkey
| | - Aysel Ugur
- Section of Medical Microbiology, Department of Basic Sciences, Faculty of Dentistry, Gazi University, Ankara, Turkey
| | - Nurdan Sarac
- Department of Biology, Faculty of Science, Mugla Sitki Kocman University, Mugla, Turkey
| | - Uydu Balci
- Department of Biology, Faculty of Science, Mugla Sitki Kocman University, Mugla, Turkey
| | - Gulfem Ergun
- Department of Prosthodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey
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Neppelenbroek KH, Lima JFM, Hotta J, Galitesi LL, Almeida ALPF, Urban VM. Effect of Incorporation of Antifungal Agents on the Ultimate Tensile Strength of Temporary Soft Denture Liners. J Prosthodont 2017; 27:177-181. [PMID: 29135059 DOI: 10.1111/jopr.12660] [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] [Accepted: 04/20/2017] [Indexed: 11/29/2022] Open
Abstract
PURPOSE To investigate the ultimate tensile strength of temporary soft denture liners modified by minimum inhibitory concentrations (MICs) of antifungal agents for Candida albicans biofilm (SC5314) determined in previous microbiological research. MATERIALS AND METHODS Dumbbell-shaped specimens (n = 7) with a central cross-sectional area of 6 × 3 × 33 mm were produced by Softone and Trusoft, without (control) or with incorporation of drugs in powder form at MICs for C. albicans biofilm (per g of material powder): nystatin (0.032 g), chlorhexidine diacetate (0.064 g), ketoconazole (0.128 g), miconazole (0.256 g), and itraconazole (0.256 g). After plasticization, specimens were immersed in distilled water at 37°C for 24 hours, 7 or 14 days, and then tested in tension in a universal testing machine at 40 mm/min. Data of tensile strength (MPa) and elongation percentage (%) were submitted to 3-way ANOVA and Tukey's test (α = 0.05). RESULTS At the end of 14 days, the tensile strength for both materials was significantly lower in the groups modified by miconazole and itraconazole compared to the other groups (p < 0.0001), which showed no significant difference between them (p > 0.05). After 7 and 14 days in water, miconazole and itraconazole added into both materials resulted in significantly lower elongation percentages compared to the other antifungal agents and control (p < 0.0001), which were similar to each other (p > 0.05). CONCLUSIONS The addition of the nystatin, chlorhexidine, and ketoconazole at MICs for C. albicans biofilm resulted in no harmful effects on the tensile strength and elongation percentage of the temporary soft denture liner materials up to 14 days.
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Affiliation(s)
| | | | - Juliana Hotta
- Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Lucas Lulo Galitesi
- Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
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29
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Oliveira MACD, Borges AC, Brighenti FL, Salvador MJ, Gontijo AVL, Koga-Ito CY. Cymbopogon citratus essential oil: effect on polymicrobial caries-related biofilm with low cytotoxicity. Braz Oral Res 2017; 31:e89. [PMID: 29116300 DOI: 10.1590/1807-3107bor-2017.vol31.0089] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 08/08/2017] [Indexed: 11/21/2022] Open
Abstract
The objective of this study was to evaluate the effects of Cymbopogon citratus essential oil and its main compound (citral) against primary dental colonizers and caries-related species. Chemical characterization of the essential oil was performed by gas chromatography/mass spectroscopy (GC/MS), and the main compound was determined. Antimicrobial activity was tested against Actinomyces naeslundii, Lactobacillus acidophilus, S. gordonii, S. mitis, S. mutans, S. sanguinis and S. sobrinus. Minimum inhibitory and bactericide concentrations were determined by broth microdilution assay for streptococci and lactobacilli reference, and for clinical strains. The effect of the essential oil on bacterial adhesion and biofilm formation/disruption was investigated. Negative (without treatment) and positive controls (chlorhexidine) were used. The effect of citral on preformed biofilm was also tested using the same methodology. Monospecies and microcosm biofilms were tested. ANOVA or Kruskal-Wallis tests were used (α=0.05). Cytotoxicity of the essential oil to human keratinocytes was performed by MTT assay. GC/MS demonstrated one major component (citral). The essential oil showed an inhibitory effect on all tested bacterial species, including S. mutans and L. acidophilus. Essential oil of C. citratus (10X MIC) reduced the number of viable cells of lactobacilli and streptococci biofilms (p < 0.05). The essential oil inhibited adhesion of caries-related polymicrobial biofilm to dental enamel (p < 0.01). Citral significantly reduced the number of viable cells of streptococci biofilm (p < 0.001). The essential oil showed low cytotoxicity to human keratinocytes. Based on these findings, this study can contribute to the development of new formulations for products like mouthwash, against dental biofilms.
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Affiliation(s)
- Maria Alcionéia Carvalho de Oliveira
- Universidade Estadual Paulista - Unesp, São José dos Campos Institute of Science and Technology, Oral Biopathology Graduate Program, São José dos Campos , SP, Brazil
| | - Aline Chiodi Borges
- Universidade Estadual Paulista - Unesp, São José dos Campos Institute of Science and Technology, Department of Environmental Engineering, São José dos Campos , SP, Brazil
| | - Fernanda Lourenção Brighenti
- Universidade Estadual Paulista - Unesp, Department of Orthodontics and Pediatric Dentistry, Araraquara, SP, Brazil
| | - Marcos José Salvador
- Universidade Estadual de Campinas - Unicamp, Institute of Biology, Department of Plant Biology, Campinas, SP, Brazil
| | - Aline Vidal Lacerda Gontijo
- Universidade Estadual de Campinas - Unicamp, Institute of Biology, Department of Plant Biology, Campinas, SP, Brazil
| | - Cristiane Yumi Koga-Ito
- Universidade Estadual Paulista - Unesp, São José dos Campos Institute of Science and Technology, Department of Environmental Engineering, São José dos Campos , SP, Brazil
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Mirizadeh A, Atai M, Ebrahimi S. Fabrication of denture base materials with antimicrobial properties. J Prosthet Dent 2017; 119:292-298. [PMID: 28552288 DOI: 10.1016/j.prosdent.2017.03.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 03/12/2017] [Accepted: 03/13/2017] [Indexed: 01/13/2023]
Abstract
STATEMENT OF PROBLEM Acrylic resin denture base resins are colonized by oral and nonoral bacteria and Candida species. This reservoir of microorganism causes denture stomatitis, which can be implicated in some life-threating infections in older denture wearers. PURPOSE The purpose of this in vitro study was to incorporate quaternized N,N-dimethylaminoethyl methacrylate (DMAEMA) monomer into a denture base resin and investigate its antimicrobial and mechanical properties. MATERIAL AND METHODS Quaternized ammonium monomer (QAM) was synthesized through the reaction of octyl bromide and DMAEMA. The synthesized QAM was incorporated into a denture base resin system (8 to 12 wt%). The resulting material was characterized by Fourier transform infrared spectroscopy. The in vitro antimicrobial property was determined by direct contact test against Escherichia coli, Staphylococcus aureus, and Candida albicans. Release of the QAM was also tested by means of an agar diffusion test. Mechanical properties were measured with a 3-point bend test, and results were analyzed and compared using ANOVA and the Tukey post hoc test (α=.05). RESULTS Spectroscopy confirmed the formation of quaternized ammonium modified denture base (QAMDB). The decrease in number of viable cells of E coli, S aureus, and C albicans was more than 99% for 12%-QAMDB in comparison with that of the control groups. An overall decline was observed in the flexural strength and flexural modulus of the fabricated resins (P<.05), but no differences were observed for strain at break or fracture work of the specimens (P>.05). CONCLUSIONS Denture base resins containing immobilized QAM provided high antibacterial activity, but the flexural strength and flexural modulus of the denture base resins decreased.
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Affiliation(s)
- Aysan Mirizadeh
- Doctoral student, Department of Chemical Engineering, North Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Mohammad Atai
- Full Professor, Iran Polymer and Petrochemical Institute, Tehran, Iran.
| | - Sirous Ebrahimi
- Associate Professor, Faculty of Chemical Engineering, Biotechnology Research Center, Sahand University of Technology, Tabriz, Iran
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31
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Bueno MG, Sousa EJBD, Hotta J, Porto VC, Urban VM, Neppelenbroek KH. Surface Properties of Temporary Soft Liners Modified by Minimum Inhibitory Concentrations of Antifungals. Braz Dent J 2017; 28:158-164. [DOI: 10.1590/0103-6440201701266] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 02/20/2017] [Indexed: 11/22/2022] Open
Abstract
Abstract Evaluating the addition of minimum inhibitory concentrations (MICs) of antifungals for Candida albicans biofilm on the hardness and roughness of temporary denture soft liners. Specimens (n=8; 36×7×6 mm) of tissue conditioner (Softone) and resilient liner (Trusoft) were produced either without (control) or with incorporation of drugs at MICs: nystatin (0.032 g/mL), chlorhexidine diacetate (0.064 g/mL), ketoconazole (0.128 g/mL), miconazole (0.256 g/mL) and itraconazole (0.256 g/mL). Specimens were stored in distilled water at 37 °C for 24 h, 7 days and 14 days prior to the hardness/roughness measurements. Data were analyzed by 3-way ANOVA and Tukey HSD test (α=0.05). The addition of the antifungals into both materials demonstrated no evident hardness change or decrease of this property compared with the control, except for miconazole in Softone, which increased the hardness after 14 days (p=0.003). The addition of nystatin into both materials, chlorhexidine in Trusoft and ketoconazole in Softone resulted in no significant changes of roughness compared with the control, after 7 days and 14 days (p>0.05). In these periods, itraconazole increased the roughness of both materials (p<0.001). The addition of all antifungals, except for the miconazole in Softone, resulted in no deleterious effects on the materials’ hardness over the evaluation time. The MICs of nystatin in both temporary soft lining materials, ketoconazole in Softone and chlorhexidine in Trusoft resulted in no deleterious effects for roughness up to 14 days.
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Herman JL, Wang Y, Lilly EA, Lallier TE, Peters BM, Hamdan S, Xu X, Fidel PL Jr, Noverr MC. Synthesis, Antifungal Activity, and Biocompatibility of Novel 1,4-Diazabicyclo[2.2.2]Octane (DABCO) Compounds and DABCO-Containing Denture Base Resins. Antimicrob Agents Chemother 2017; 61:e02575-16. [PMID: 28115357 DOI: 10.1128/AAC.02575-16] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 01/14/2017] [Indexed: 01/28/2023] Open
Abstract
The fungal pathogen Candida albicans causes a variety of oral infections, including denture stomatitis, which is characterized by inflammation of the oral mucosa in direct contact with dentures and affects a significant number of otherwise healthy denture wearers. While antifungal treatment reduces symptoms, infections are often recurrent. One strategy to address this problem is to incorporate compounds with fungicidal activities into denture materials to prevent colonization. Our laboratory synthesized novel derivatives of 1,4-diazabicyclo[2.2.2]octane (DABCO), which is an organic compound typically used as a catalyst in polymerization reactions. DABCO derivatives with different aliphatic chain lengths (DC16, DC16F, DC18, and C6DC16), as well as methacrylate monomers conjugated to DABCO compounds (DC11MAF and C2DC11MAF), were synthesized and tested for antimicrobial activity. All the compounds exhibited fungicidal activity against several Candida species at concentrations ranging between 2 and 4 μg/ml. Moreover, acrylic denture base resins fabricated to contain 1, 2, or 4 wt% DABCO compounds inhibited surface C. albicans biofilm formation, as well as fungal growth, in disc diffusion assays. Remarkably, discs (4 wt%) aged for 2 months also exhibited approximately 100% growth-inhibitory activity. While some DABCO compounds exerted intermediate to high cytotoxicity against mammalian oral cell types, DC11MAF and denture base resin discs containing 2 or 4 wt% C2DC11MAF exhibited relatively low cytotoxicity against periodontal ligament (PDL) cell and gingival fibroblast (GF) lines, as well as primary oral epithelial cells. These studies demonstrate that DABCO derivatives can be incorporated into denture materials and exert fungicidal activity with minimal cytotoxicity to mammalian cells. DC11MAF and C2DC11MAF are considered strong candidates as therapeutic or preventive alternatives against Candida-associated denture stomatitis.
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Altinci P, Mutluay M, Söderling E, Tezvergil-Mutluay A. Antimicrobial efficacy and mechanical properties of BAC-modified hard and soft denture liners. Odontology 2017; 106:83-89. [PMID: 28321584 DOI: 10.1007/s10266-017-0303-8] [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: 12/12/2016] [Accepted: 02/09/2017] [Indexed: 11/30/2022]
Abstract
This study investigated the antimicrobial efficacy and mechanical strength of hard and soft denture liners modified with benzalkonium chloride (BAC). The specimens (1 mm thickness, 8 mm diameter) were prepared by mixing 0.5, 1, 2 and 5 wt% BAC with soft (Sofreliner Medium, Tokuyama) and hard (Rebase II, Tokuyama) denture liners (n = 5/group). BAC was not added to the controls. Candida albicans ATCC 28366 (A 550 = 0.5) and Streptococcus mutans Ingbritt suspensions (A 550 = 0.35) were pipetted onto the specimens, and incubated for 4 h. The viable cells were collected, and determined by plate-culturing (CFU). The tests were repeated after the specimens were soaked in distilled water for 7 days. The mechanical strengths were evaluated by tear and 4-point flexural strength tests for soft and hard liners, respectively. The data were analyzed with ANOVA and Tukey's HSD tests at p = 0.05. C. albicans viability was lost in all groups of BAC-modified soft liners (p < 0.001), and S. mutans viability was reduced (p < 0.01), except of soaked BAC 0.5 wt% group (p > 0.05). For the hard liner, BAC 5 wt% killed the C. albicans and S. mutans cells both before and after soaked in water (p < 0.001). BAC 2 wt% showed comparable tear strength with the soft liner control (p > 0.05). BAC did not reduce the flexural strength of the hard liner (p > 0.05), except of BAC 5 wt% group (p < 0.01). BAC can be a promising agent reducing the C. albicans and S. mutans viability on the soft and hard denture liner surfaces.
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Affiliation(s)
- Pinar Altinci
- Finnish Doctoral Program in Oral Sciences, Turku, Finland. .,Department of Restorative Dentistry and Cariology, Institute of Dentistry, University of Turku, Lemminkaisenkatu 2, 20520, Turku, Finland.
| | - Murat Mutluay
- Department of Restorative Dentistry and Cariology, Institute of Dentistry, University of Turku, Lemminkaisenkatu 2, 20520, Turku, Finland.,TYKS University Hospital, University of Turku, Turku, Finland
| | - Eva Söderling
- Department of Restorative Dentistry and Cariology, Institute of Dentistry, University of Turku, Lemminkaisenkatu 2, 20520, Turku, Finland
| | - Arzu Tezvergil-Mutluay
- Department of Restorative Dentistry and Cariology, Institute of Dentistry, University of Turku, Lemminkaisenkatu 2, 20520, Turku, Finland.,TYKS University Hospital, University of Turku, Turku, Finland
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Lima JFM, Maciel JG, Hotta J, Vizoto ACP, Honório HM, Urban VM, Neppelenbroek KH. Porosity of temporary denture soft liners containing antifungal agents. J Appl Oral Sci 2016; 24:453-461. [PMID: 27812615 PMCID: PMC5083022 DOI: 10.1590/1678-775720160092] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 04/04/2016] [Indexed: 11/24/2022] Open
Abstract
Incorporation of antifungals in temporary denture soft liners has been recommended for denture stomatitis treatment; however, it may affect their properties.
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Affiliation(s)
| | - Janaína Gomes Maciel
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Prótese, Bauru, SP, Brasil
| | - Juliana Hotta
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Prótese, Bauru, SP, Brasil
| | - Ana Carolina Pero Vizoto
- Universidade Estadual Paulista, Faculdade de Odontologia de Araraquara, Departamento de Materiais Odontológicos e Prótese, Araraquara, SP, Brasil
| | - Heitor Marques Honório
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Odontopediatria, Ortodontia e Saúde Coletiva, Bauru, SP, Brasil
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Sun D, Xu D, Yang C, Shahzad MB, Sun Z, Xia J, Zhao J, Gu T, Yang K, Wang G. An investigation of the antibacterial ability and cytotoxicity of a novel cu-bearing 317L stainless steel. Sci Rep 2016; 6:29244. [PMID: 27385507 DOI: 10.1038/srep29244] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 06/14/2016] [Indexed: 11/08/2022] Open
Abstract
In order to solve the challenging problem of microbial infections caused by microorganisms on medical implants, it is imperative to develop novel antimicrobial biomaterials. This work demonstrated that 317L-Cu stainless steel (SS), created by adding copper through a solution and aging heat treatment process, exhibited good antibacterial properties against staphylococcus aureus, achieving 2 log reduction of planktonic cells after 5 days of incubation. In this study, the antibacterial test was performed using the plate count method, the fluorescence cell staining method and the quantitative polymerase chain reaction (qPCR) method. It is well known that a high concentration of copper ion can lead to cytotoxicity. This work explored the cytotoxicity of 317L-Cu SS through real-time cell analysis (RTCA). Experimental results demonstrated that the 317L-Cu SS possessed a satisfactory antibacterial ability against S. aureus, and the antibacterial rate based on the reduction of sessile cell count reached 98.3% after 24-hour treatment. The bacterial adhesion and the biofilm thickness were considerably reduced by the 317L-Cu SS. The results of RTCA suggested that 317L-Cu SS did not introduce cytotoxicity to mouse cells, indicating its suitability as a medical implant material.
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Lima JF, Maciel JG, Arrais CA, Porto VC, Urban VM, Neppelenbroek KH. Effect of incorporating antifungals on the water sorption and solubility of interim resilient liners for denture base relining. J Prosthet Dent 2016; 115:611-6. [DOI: 10.1016/j.prosdent.2015.09.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 09/17/2015] [Accepted: 09/17/2015] [Indexed: 10/22/2022]
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Iqbal Z, Zafar MS. Role of antifungal medicaments added to tissue conditioners: A systematic review. J Prosthodont Res 2016; 60:231-9. [PMID: 27085676 DOI: 10.1016/j.jpor.2016.03.006] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 03/02/2016] [Accepted: 03/21/2016] [Indexed: 11/22/2022]
Abstract
PURPOSE The aim of this review is to investigate the current state of knowledge on the incorporation of antifungal agents into the tissue conditioners for the treatment of denture induced stomatitis. STUDY SELECTION Studies reporting the incorporation of antifungal/antimicrobial agents in to tissue conditioners were included in the review. In order to search the studies on the topic "incorporation of antifungal agents in tissue conditioners for the treatment of denture induced stomatitis" ISI web of science, PubMed/MEDLINE, and Google-Scholar databases were searched from 1970 up to and including July 2015 using various keywords such as antifungal agents, tissue conditioners, Candida albicans, denture stomatitis, etc. RESULTS Various studies reported the efficacy and effectiveness of adding conventional organic antifungal medicines (nystatin, azole group derivatives and chlorhexidine, antimicrobials/antifungals other than organic (silver zeolite, silver nano-particles, photo-catalysts and metallic oxides) and natural and herbal antimicrobials (tea tree oil, lemongrass essential oil and origanum oil) into various tissue conditioners. The review literature reported that incorporation of antifungal agents into tissue conditioners is effective with minimal or no effects on physical and mechanical properties of tissue conditioners. CONCLUSIONS Incorporation of different antifungal medicaments to commercially available tissue conditioners can be recommended for the management of denture induced stomatitis.
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Sánchez-Aliaga A, Pellissari CVG, Arrais CAG, Michél MD, Neppelenbroek KH, Urban VM. Peel bond strength of soft lining materials with antifungal to a denture base acrylic resin. Dent Mater J 2016; 35:194-203. [PMID: 27041008 DOI: 10.4012/dmj.2014-269] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The effect of the addition of nystatin, miconazole, ketoconazole, chlorhexidine, and itraconazole into the soft lining materials Softone and Trusoft on their peel bond strength to a denture base acrylic resin was evaluated. Specimens of soft lining materials (n=7) were made without (control) or with the incorporation of antifungals at their minimum inhibitory concentrations to the biofilm of C. albicans and bonded to the acrylic resin. Peel testing was performed after immersion in distilled water at 37ºC for 24 h, 7 and 14 days. Data (MPa) were analyzed by 3-way ANOVA/Tukey-Kramer test (α=0.05) and the failure modes were classified. The addition of nystatin and ketoconazole did not affect the peel bond strength for up to 14 days. Most failures were predominantly cohesive within soft lining materials. With the exception of itraconazole, incorporating the antifungals into the soft lining materials did not result in values below those recommended for peel bond strength after 7 and 14 days of analysis.
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Garner S, Barbour ME. Nanoparticles for controlled delivery and sustained release of chlorhexidine in the oral environment. Oral Dis 2015; 21:641-4. [DOI: 10.1111/odi.12328] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 02/04/2015] [Accepted: 02/09/2015] [Indexed: 11/29/2022]
Affiliation(s)
- S Garner
- Oral Nanoscience; School of Oral and Dental Sciences; University of Bristol; Bristol UK
| | - ME Barbour
- Oral Nanoscience; School of Oral and Dental Sciences; University of Bristol; Bristol UK
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