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Novel Dental Restorative Solutions for Natural Teeth and Implants. BIOENGINEERING (BASEL, SWITZERLAND) 2022; 9:bioengineering9120772. [PMID: 36550979 PMCID: PMC9774112 DOI: 10.3390/bioengineering9120772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022]
Abstract
The long-term survival of restorations in the oral cavity has always been one of the most significant challenges in modern dental practice [...].
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Donkor ES, Kotey FCN. Methicillin-Resistant Staphylococcus aureus in the Oral Cavity: Implications for Antibiotic Prophylaxis and Surveillance. Infect Dis (Lond) 2020; 13:1178633720976581. [PMID: 33402829 PMCID: PMC7739134 DOI: 10.1177/1178633720976581] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 11/03/2020] [Indexed: 02/06/2023] Open
Abstract
The oral cavity harbors a multitude of commensal flora, which may constitute a repository of antibiotic resistance determinants. In the oral cavity, bacteria form biofilms, and this facilitates the acquisition of antibiotic resistance genes through horizontal gene transfer. Recent reports indicate high methicillin-resistant Staphylococcus aureus (MRSA) carriage rates in the oral cavity. Establishment of MRSA in the mouth could be enhanced by the wide usage of antibiotic prophylaxis among at-risk dental procedure candidates. These changes in MRSA epidemiology have important implications for MRSA preventive strategies, clinical practice, as well as the methodological approaches to carriage studies of the organism.
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Affiliation(s)
- Eric S Donkor
- Department of Medical Microbiology, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Fleischer CN Kotey
- Department of Medical Microbiology, College of Health Sciences, University of Ghana, Accra, Ghana
- FleRhoLife Research Consult, Teshie, Accra, Ghana
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Frenzel N, Maenz S, Sanz Beltrán V, Völpel A, Heyder M, Sigusch BW, Lüdecke C, Jandt KD. Template assisted surface microstructuring of flowable dental composites and its effect on microbial adhesion properties. Dent Mater 2016; 32:476-87. [PMID: 26775012 DOI: 10.1016/j.dental.2015.12.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 12/09/2015] [Accepted: 12/09/2015] [Indexed: 10/22/2022]
Abstract
OBJECTIVES Despite their various advantages, such as good esthetic properties, absence of mercury and adhesive bonding to teeth, modern dental composites still have some drawbacks, e.g., a relatively high rate of secondary caries on teeth filled with composite materials. Recent research suggests that microstructured biomaterials surfaces may reduce microbial adhesion to materials due to unfavorable physical material-microbe interactions. The objectives of this study were, therefore, to test the hypotheses that (i) different surface microstructures can be created on composites by a novel straightforward approach potentially suitable for clinical application and (ii) that these surface structures have a statistically significant effect on microbial adhesion properties. METHODS Six different dental composites were initially tested for their suitability for microstructuring by polydimethylsiloxane (PDMS) templates. Each composite was light-cured between a glass slide and a microstructured PDMS template. The nano-hybrid composite Grandio Flow was the only tested composite with satisfying structurability, and was therefore used for the bacterial adhesion tests. Composites samples were structured with four different microstructures (flat, cubes, linear trapezoid structures, flat pyramids) and incubated for 4h in centrifuged saliva. The bacterial adherence was then characterized by colony forming units (CFUs) and scanning electron microscopy (SEM). RESULTS All four microstructures were successfully transferred from the PDMS templates to the composite Grandio Flow. The CFU-test as well as the quantitative analysis of the SEM images showed the lowest bacterial adhesion on the flat composite samples. The highest bacterial adhesion was observed on the composite samples with linear trapezoid structures, followed by flat pyramids and cubes. The microstructure of dental composite surfaces statistically significantly influenced the adhesion of oral bacteria. SIGNIFICANCE Modifying the composite surface structure may be a clinically suitable approach to control the microbial adhesion and thus, to reduce the risk of secondary caries at dental composite restorations. Smaller composite surface structures may be useful for accomplishing this.
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Affiliation(s)
- Nadja Frenzel
- Department of Conservative Dentistry, University Hospital Jena, Friedrich Schiller University, An der alten Post 4, D-07743 Jena, Germany
| | - Stefan Maenz
- Otto Schott Institute of Materials Research, Faculty of Physics and Astronomy, Friedrich Schiller University, Löbdergraben 32, D-07743 Jena, Germany
| | - Vanesa Sanz Beltrán
- Otto Schott Institute of Materials Research, Faculty of Physics and Astronomy, Friedrich Schiller University, Löbdergraben 32, D-07743 Jena, Germany
| | - Andrea Völpel
- Department of Conservative Dentistry, University Hospital Jena, Friedrich Schiller University, An der alten Post 4, D-07743 Jena, Germany
| | - Markus Heyder
- Department of Conservative Dentistry, University Hospital Jena, Friedrich Schiller University, An der alten Post 4, D-07743 Jena, Germany
| | - Bernd W Sigusch
- Department of Conservative Dentistry, University Hospital Jena, Friedrich Schiller University, An der alten Post 4, D-07743 Jena, Germany
| | - Claudia Lüdecke
- Otto Schott Institute of Materials Research, Faculty of Physics and Astronomy, Friedrich Schiller University, Löbdergraben 32, D-07743 Jena, Germany; Jena School for Microbial Communication (JSMC), Friedrich Schiller University, Jenergasse 8, D-07743 Jena, Germany
| | - Klaus D Jandt
- Otto Schott Institute of Materials Research, Faculty of Physics and Astronomy, Friedrich Schiller University, Löbdergraben 32, D-07743 Jena, Germany; Jena School for Microbial Communication (JSMC), Friedrich Schiller University, Jenergasse 8, D-07743 Jena, Germany.
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Nedeljkovic I, Teughels W, De Munck J, Van Meerbeek B, Van Landuyt KL. Is secondary caries with composites a material-based problem? Dent Mater 2015; 31:e247-77. [DOI: 10.1016/j.dental.2015.09.001] [Citation(s) in RCA: 139] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 03/28/2015] [Accepted: 09/01/2015] [Indexed: 12/22/2022]
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Biofilms in restorative dentistry: A clinical report. J Prosthet Dent 2015; 113:524-7. [DOI: 10.1016/j.prosdent.2015.01.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Revised: 01/10/2015] [Accepted: 01/12/2015] [Indexed: 11/21/2022]
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Pandit S, Kim GR, Lee MH, Jeon JG. Evaluation of Streptococcus mutans biofilms formed on fluoride releasing and non fluoride releasing resin composites. J Dent 2011; 39:780-7. [DOI: 10.1016/j.jdent.2011.08.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2011] [Revised: 08/16/2011] [Accepted: 08/18/2011] [Indexed: 11/17/2022] Open
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Brambilla E, Gagliani M, Ionescu A, Fadini L, García-Godoy F. The influence of light-curing time on the bacterial colonization of resin composite surfaces. Dent Mater 2009; 25:1067-72. [DOI: 10.1016/j.dental.2009.02.012] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2007] [Revised: 02/02/2009] [Accepted: 02/02/2009] [Indexed: 11/17/2022]
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Lawaf S, Azizi A. Candida albicans Adherence to Glass Ionomer Restorative Dental Material. J Dent Res Dent Clin Dent Prospects 2009; 3:52-5. [PMID: 23230482 PMCID: PMC3517285 DOI: 10.5681/joddd.2009.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2008] [Accepted: 04/02/2009] [Indexed: 11/17/2022] Open
Abstract
Background and aims
It is believed that adherence of Candida albicans to oral surfaces is a critical event in the coloni-zation and development of oral diseases such as candida-associated denture stomatitis. Although there is considerable infor-mation about the adherence of Candida albicans to buccal epithelial cells and prosthetic materials, there is very little infor-mation available about the adherence of Candida albicans to glass ionomer materials. The purpose of this study was to investigate the degree of Candida albicans adherence to glass ionomer restorative material.
Materials and methods
In this experimental study adherence of Candida albicans strains was studied with and without human whole saliva. First, glass ionomer fragments were prepared; then yeast cells were inoculated and incubated with differ-ent incubation times. After incubation, the fragments were removed from the wells and stained with 0.1% calcofluor white. Adhesion was quantified by counting the total number of cells at 40, 80 and 120 minutes. The analysis of variance and Stu-dent's test were used to assess the significance of differences between the means.
Results
In the absence of saliva, the adherence of Candida albicans showed an increase, reaching a maximum at the end of the experiment (120 minutes). However, in the presence of saliva, the adherence of Candida albicans to glass ionomer significantly decreased.
Conclusion The presence of human whole saliva is an important factor in the adherence of Candida albicans to glass ion-omer restorative material.
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Affiliation(s)
- Shirin Lawaf
- Assistant Professor, Department of Prosthodontics, Faculty of Dentistry, Ahwaz Jundi Shapoor University of Medical science, Ahvaz, Iran
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Lee SP, Lee SJ, Lim BS, Ahn SJ. Surface Characteristics of Orthodontic Materials and Their Effects on Adhesion of Mutans streptococci. Angle Orthod 2009; 79:353-60. [DOI: 10.2319/021308-88.1] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2008] [Accepted: 04/01/2008] [Indexed: 11/23/2022] Open
Abstract
AbstractObjective: To test the hypothesis that there are no significant differences in the adhesion of mutans streptococci (MS) to various orthodontic materials based on their surface characteristics.Materials and Methods: Surface roughness (SR) and surface free energy (SFE) characteristics were investigated for nine different orthodontic materials (four orthodontic adhesives, three bracket raw materials, hydroxyapatite blocks, and bovine incisors) using confocal laser scanning microscopy and sessile drop method. Each material, except the bovine incisors, was incubated with whole saliva or phosphate-buffered saline for 2 hours. Adhesion assays were performed by incubating tritium-labeled MS with each material for 3 or 6 hours.Results: Orthodontic adhesives had higher SFE characteristics and lower SR than bracket materials. Orthodontic adhesives showed a higher MS retaining capacity than bracket materials, and MS adhesion to resin-modified glass ionomer and hydroxyapatite was highest. Extended incubation time increased MS adhesion, while saliva coating did not significantly influence MS adhesion. SFE, specifically its dispersive and polar components, was positively correlated with MS adhesion, irrespective of saliva coating.Conclusions: The hypothesis is rejected. This study suggests that SFE characteristics play an important role in the initial MS adhesion to orthodontic materials.
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Affiliation(s)
- Seung-Pyo Lee
- a Associate Professor, Dental Research Institute and Department of Oral Anatomy, Seoul National University, Seoul, Korea
| | - Shin-Jae Lee
- b Associate Professor, Department of Orthodontics, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea
| | - Bum-Soon Lim
- c Professor, Dental Biomaterials Science and Dental Research Institute, Seoul National University, Seoul, Korea
| | - Sug-Joon Ahn
- d Assistant Professor, Dental Research Institute and Department of Orthodontics, College of Dentistry, Seoul National University, Seoul, Korea
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Lim BS, Lee SJ, Lee JW, Ahn SJ. Quantitative analysis of adhesion of cariogenic streptococci to orthodontic raw materials. Am J Orthod Dentofacial Orthop 2008; 133:882-8. [PMID: 18538253 DOI: 10.1016/j.ajodo.2006.07.027] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2006] [Revised: 07/01/2006] [Accepted: 07/01/2006] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Knowledge of adhesion patterns of cariogenic streptococci to orthodontic materials can provide valuable information on the cause of enamel demineralization during orthodontic treatment. The purpose of this study was to investigate the adhesion of 2 cariogenic streptococci strains to 7 orthodontic raw materials (3 light-cured orthodontic adhesives, 3 bracket raw materials, and hydroxyapatite) with respect to bacterial species, incubation time, and saliva coating. METHODS Each material was incubated with unstimulated whole saliva or phosphate-buffered saline solution for 2 hours. Binding assays were then performed by incubating tritium-labeled cariogenic streptococci with each raw material for 3 or 6 hours. RESULTS The degree of adhesion varied by material type. Generally, adhesion of cariogenic streptococci was significantly higher for bonding adhesives than for bracket materials, and adhesion to resin-modified glass ionomer was the highest. A longer incubation time generally increased bacterial adhesion, whereas saliva coating did not significantly influence bacterial adhesion. CONCLUSIONS Bonding adhesives around brackets should be removed carefully during the bonding procedure to avoid enamel decalcification.
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Affiliation(s)
- Bum-Soon Lim
- Dental Research Institute and Department of Dental Biomaterials Science, College of Dentistry, Seoul National University, Seoul, Korea, ROK
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Surface response of fluorine polymer-incorporated resin composites to cariogenic biofilm adherence. Appl Environ Microbiol 2008; 74:1428-35. [PMID: 18192415 DOI: 10.1128/aem.02039-07] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Experimental resin composites with incorporated polytetrafluoroethylene (PTFE) particles were developed, which theoretically could improve the surface properties of the materials, including the inhibition of bacterial adherence. To assess the surface properties in relation to biofilm formation and detachment, 23.1% (wt/wt) linear PTFE particles (FL-30) and cross-linked PTFE particles (FC-30) were incorporated into pure resin composites. Pure PTFE plates and pure resin composites without PTFE (F-0) were used as control specimens. Sucrose-dependent Streptococcus mutans biofilms were formed on the specimen blocks inside an oral biofilm reactor for various time periods and analyzed with or without application of driving forces. In addition, water contact angles and surface roughness were measured. The water contact angles of FL-30 (61.2 degrees ) and FC-30 (65.8 degrees ) were larger than that of F-0 (48.5 degrees ). The largest contact angle (107 degrees ) was detected on pure PTFE plates. However, the surfaces of FL-30, FC-30, and pure PTFE plates were rougher than that of F-0. Although the surface properties of the materials differed in terms of contact angles and roughness, these factors seemed not to affect biofilm formation on the surfaces within 5 h. Pure PTFE plates harbored almost the same amounts of biofilm as F-0. However, when a very strong driving force was applied, it was clear that there were significantly smaller amounts of biofilms retained on pure PTFE plates, which showed contact angles much higher than those of the other materials. Hydrophobicity of the resin composite was improved by incorporation of PTFE fillers. However, surface resistance against biofilm formation was not improved.
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Chin MYH, Sandham A, Pratten J, van der Mei HC, Busscher HJ. Multivariate analysis of surface physico-chemical properties controlling biofilm formation on orthodontic adhesives prior to and after fluoride and chlorhexidine treatment. J Biomed Mater Res B Appl Biomater 2006; 78:401-8. [PMID: 16470828 DOI: 10.1002/jbm.b.30501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Biofilm formation on orthodontic adhesives is a serious clinical problem, as it leads to enamel demineralization around fixed orthodontic appliances, often leaving white spot lesions after their removal. The aim of this work was to determine the influence of surface physico-chemical properties of four commonly used orthodontic adhesives (Concise, Fuji ORTHO LC, Ketac Cem mu, and Transbond XT) on early bacterial biofilm formation. In addition, effects of two commercially available mouthrinses (0.05% sodium fluoride and 0.2% chlorhexidine gluconate) on these properties and biofilm formation were determined. Water contact angles on the adhesives decreased after fluoride and chlorhexidine treatment, concurrent with an increase in carbon and a decrease in oxygen surface concentrations, except for Transbond, as determined by X-ray photoelectron spectroscopy. No fluorine was detected on any of the adhesive surfaces after fluoride treatment, while all surfaces showed chlorine after chlorhexidine treatment. Surface roughness of the adhesives measured using three-dimensional optical profilometry was around 4 microm and found not to be a factor governing early biofilm formation. Multiple linear regression analysis indicated that early biofilm formation by Streptococcus sanguis could be explained in a model comprising hydrophobicity and the prevalence of oxygen- and nitrogen-rich components on the adhesive surfaces.
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Affiliation(s)
- Mervyn Y H Chin
- Department of Orthodontics, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Postbox 30 001, 9700 RB Groningen, The Netherlands.
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Chandra J, Patel JD, Li J, Zhou G, Mukherjee PK, McCormick TS, Anderson JM, Ghannoum MA. Modification of surface properties of biomaterials influences the ability of Candida albicans to form biofilms. Appl Environ Microbiol 2006; 71:8795-801. [PMID: 16332875 PMCID: PMC1317330 DOI: 10.1128/aem.71.12.8795-8801.2005] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Candida albicans biofilms form on indwelling medical devices (e.g., denture acrylic or intravenous catheters) and are associated with both oral and invasive candidiasis. Here, we determined whether surface modifications of polyetherurethane (Elasthane 80A [E80A]), polycarbonateurethane, and poly(ethyleneterephthalate) (PET) can influence fungal biofilm formation. Polyurethanes were modified by adding 6% polyethylene oxide (6PEO), 6% fluorocarbon, or silicone, while the PET surface was modified to generate hydrophilic, hydrophobic, cationic, or anionic surfaces. Formation of biofilm was quantified by determining metabolic activity and total biomass (dry weight), while its architecture was analyzed by confocal scanning laser microscopy (CSLM). The metabolic activity of biofilm formed by C. albicans on 6PEO-E80A was significantly reduced (by 78%) compared to that of biofilm formed on the nonmodified E80A (optical densities of 0.054 +/- 0.020 and 0.24 +/- 0.10, respectively; P = 0.037). The total biomass of Candida biofilm formed on 6PEO-E80A was 74% lower than that on the nonmodified E80A surface (0.46 +/- 0.15 versus 1.76 +/- 0.32 mg, respectively; P = 0.003). Fungal cells were easily detached from the 6PEO-E80A surface, and we were unable to detect C. albicans biofilm on this surface by CSLM. All other surface modifications allowed formation of C. albicans biofilm, with some differences in thearchitecture. Correlation between contact angle and biofilm formation was observed for polyetherurethane substrates (r = 0.88) but not for PET biomaterials (r = -0.40). This study illustrates that surface modification is a viable approach for identifying surfaces that have antibiofilm characteristics. Investigations into the clinical utility of the identified surfaces are warranted.
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Affiliation(s)
- Jyotsna Chandra
- Center for Medical Mycology, Department of Dermatology, University Hospitals of Cleveland and Case Western Reserve University, 11100 Euclid Avenue, Cleveland, OH 44106-5028, USA
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Montanaro L, Campoccia D, Rizzi S, Donati ME, Breschi L, Prati C, Arciola CR. Evaluation of bacterial adhesion of Streptococcus mutans on dental restorative materials. Biomaterials 2004; 25:4457-63. [PMID: 15046936 DOI: 10.1016/j.biomaterials.2003.11.031] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2003] [Accepted: 11/11/2003] [Indexed: 10/26/2022]
Abstract
Bacterial adhesion to the surface of composite resins and other dental restorative materials is an important parameter in the aetiology of secondary caries formation. The aim of the present study was to investigate the adhesion of a Streptococcus mutans strain (ATCC 25175) on the surface of different restorative materials. The test materials examined included three flowable composites (Filtek Flow, Tetric Flow, and Arabesk Flow), three microhybrid composites (Clearfil APX, Solitaire 2, and Z250), two glass-ionomers (Fuji IX, Fuji IX fast), a compomer (F2000), an ormocer (Admira), and a control reference material (tissue culture grade, surface treated polystyrene). The adhesion tests were carried out in 24-well plates. Quantitative turbidimetric measurements were finally performed in order to indirectly evaluate the amount of bacteria retained on the material surface after in vitro exposure to the bacteria suspension. Under these conditions, with the exception of the Admira ormocer and the Fuji IX fast glass ionomer, which were found to be more adhesive, all the other material surfaces showed a similar susceptibility to bacterial adhesion, exhibiting values not significantly different than the reference polystyrene control. Furthermore, the release of fluoride from some of the test surfaces did not appear capable to reduce early bacterial adhesion.
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Affiliation(s)
- Lucio Montanaro
- Research Laboratory on Biocompatibility of Implant Materials, Rizzoli Orthopaedic Institute, and Experimental Pathology Department, University of Bologna, Italy.
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Badawi H, Evans RD, Wilson M, Ready D, Noar JH, Pratten J. The effect of orthodontic bonding materials on dental plaque accumulation and composition in vitro. Biomaterials 2003; 24:3345-50. [PMID: 12763461 DOI: 10.1016/s0142-9612(03)00166-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The aim of this study was to investigate the accumulation and composition of microcosm dental plaque on different orthodontic bonding materials using an in vitro model. Microcosm plaques were grown on discs of a range of bonding materials in a constant depth film fermentor. The biofilms were derived from human saliva and supplied with artificial saliva as a source of nutrients. The number of viable bacteria in the biofilms was determined and the streptococci present were identified to species level. The results showed that there was no significant difference in bacterial accumulation between different bonding materials, however, biofilms grown on materials which were fluoride releasing, did not contain Streptococcus mutans. This in vitro study has shown that the use of fluoride-releasing bonding materials may support the growth of supragingival plaque, which does not contain S. mutans.
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Affiliation(s)
- H Badawi
- Department of Orthodontics, Eastman Dental Institute for Oral Health Care Sciences, University College London, 256 Gray's Inn Road, UK
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Maza JL, Elguezabal N, Prado C, Ellacuría J, Soler I, Pontón J. Candida albicans adherence to resin-composite restorative dental material: influence of whole human saliva. ORAL SURGERY, ORAL MEDICINE, ORAL PATHOLOGY, ORAL RADIOLOGY, AND ENDODONTICS 2002; 94:589-92. [PMID: 12424453 DOI: 10.1067/moe.2002.126024] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Attachment of Candida albicans to oral surfaces is believed to be a critical event in the colonization of the oral cavity and in the development of oral diseases such as Candida-associated denture stomatitis. Although there is considerable information about the adhesion of C albicans to buccal epithelial cells and prosthetic materials, there is very little information about the adhesion of C albicans to composite restorative materials. The purpose of this study was to investigate the degree of adhesion of C albicans to a resin-composite restorative material (Herculite). METHODS The adhesion of 2 strains of C albicans, a germinative and a germ tube-deficient mutant, was studied by a visual method after incubating the fungus and the resin with and without human whole saliva. RESULTS In absence of saliva, the adhesion of the C albicans germinative isolate to the resin showed an increase in parallel with the germination, reaching a maximum at the end of the experiment (120 minutes). However, no significant differences were observed in the adhesion of the agerminative mutant during the period of time studied. In the presence of saliva, the adhesion of both isolates to the resin was significantly lowered. CONCLUSION Germination and the presence of human whole saliva are important factors in the adhesion of C albicans to the resin-composite restorative material Herculite.
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Affiliation(s)
- José Luis Maza
- Department of Estomatología, Facultad de Medicina y Odontología, Universidad del País Vasco, Vizcaya, Spain.
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Zalkind MM, Keisar O, Ever-Hadani P, Grinberg R, Sela MN. Accumulation of Streptococcus mutans on light-cured composites and amalgam: an in vitro study. JOURNAL OF ESTHETIC DENTISTRY 1999; 10:187-90. [PMID: 9893513 DOI: 10.1111/j.1708-8240.1998.tb00356.x] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The aim of the in vitro study was to examine the accumulation of Streptococcus mutans on light-cured composite materials and amalgam. Bacteria cultures were grown in a brain heart infusion medium, and their growth rate was determined through turbidity measurements. The data, so obtained, were evaluated statistically by analysis of variance (ANOVA) followed by Scheffe test. Experiments on amalgam showed better results compared to those on composite materials. There were no statistically significant differences in plaque accumulation on different composite materials after finishing and polishing procedures, compared to plaque accumulation on composite materials against a Mylar strip.
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Affiliation(s)
- M M Zalkind
- Department of Prosthodontics, Hebrew University-Hadassah School of Dental Medicine, Jerusalem, Israel
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Steinberg D, Mor C, Dogan H, Zacks B, Rotstein I. Effect of salivary biofilm on the adherence of oral bacteria to bleached and non-bleached restorative material. Dent Mater 1999; 15:14-20. [PMID: 10483391 DOI: 10.1016/s0109-5641(99)90026-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVE The objective of this work was to examine the effect of in vitro salivary biofilm on the adherence of oral bacteria to bleached and non-bleached restorative material (Charisma). METHODS Charisma samples, prepared in silicon models, were treated with either 10% carbamide peroxide (CP) or 10% hydrogen peroxide (HP). After incubation with the bleaching agent for a period of one, two or three days, the samples were coated with freshly collected human saliva. The adsorption pattern of the saliva to the restorative material was determined using gel electrophoresis coupled with computerized densitometry techniques. The amount of salivary proteins adsorbed onto the treated surfaces was measured using the Bradford method. Sucrose-dependent bacterial adhesion to the salivary-coated Charisma was tested using radio-labeled Streptococcus mutans, Streptococcus sobrinus and Actinomyces viscosus. Adhesion of each bacterium to surfaces pretreated with the bleaching agents was compared with saliva coated bleached surfaces. RESULTS The profile of salivary proteins adsorption followed a similar pattern in Charisma samples pretreated with either CP or HP or untreated samples. However, the total amount of salivary proteins adsorbed onto the samples decreased after bleaching with CP or HP. Salivary biofilm, coating the surface of the restorative material, significantly decreased sucrose-dependent adhesion of Streptococcus sobrinus and Streptococcus mutans to the bleached and non-bleached surfaces, compared to non-coated specimens (p < 0.05). Saliva had a minor effect on adhesion of Actinomyces viscosus. SIGNIFICANCE Our study demonstrates the importance of salivary biofilm in controlling adhesion of oral bacteria to restorative material pretreated with bleaching agents or untreated.
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Affiliation(s)
- D Steinberg
- Department of Oral Biology, Hebrew University-Hadassah, Jerusalem, Israel.
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Fournier A, Payant L, Bouclin R. Adherence of Streptococcus mutans to orthodontic brackets. Am J Orthod Dentofacial Orthop 1998; 114:414-7. [PMID: 9790325 DOI: 10.1016/s0889-5406(98)70186-6] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The affinity of Streptococcus mutans to orthodontic brackets made from metal, plastic, and ceramic was tested. Twelve saliva-coated brackets and 12 noncoated brackets of each type were immersed in a S. mutans solution labeled with [3H] thymidine. Each sample was then immersed in distilled water at 20 degrees C for 24, 48, and 72 hours to measure the adherence of S. mutans to these samples. During the first 24 hours, the adherence of S. mutans decreased with and without saliva coating. Between 24 and 72 hours, the adherence of S. mutans to the saliva-coated brackets remained unchanged; the adherence to uncoated brackets showed a decrease. Saliva coating caused a decreased affinity of S. mutans for all products tested. The initial affinity of S. mutans to metal brackets was statistically significantly lower than that to plastic and porcelain brackets with and without saliva coating.
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Affiliation(s)
- A Fournier
- Faculté de Médecine Dentaire, Université Laval, Department of Orthodontics, Sainte-Foy, Québec, Canada
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20
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Hansel C, Leyhausen G, Mai UE, Geurtsen W. Effects of various resin composite (co)monomers and extracts on two caries-associated micro-organisms in vitro. J Dent Res 1998; 77:60-7. [PMID: 9437400 DOI: 10.1177/00220345980770010601] [Citation(s) in RCA: 174] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Previous studies have shown that extracts of various filling materials, e.g., resin composites, may influence the growth of cariogenic micro-organisms. The purpose of this study was to examine the effects of important resin composite (co)monomers (Bis-GMA, UDMA, TEGDMA, EGDMA) and extracts of two commercial dental composites with similar composition (composite A, Arabesk; composite S, Superlux) on the growth of the two cariogenic bacterial pathogens Streptococcus sobrinus and Lactobacillus acidophilus. It was found that neither the monomers Bis-GMA and UDMA, nor the comonomer EGDMA, nor the extract of composite A influenced the growth of S. sobrinus in the log phase. The comonomer TEGDMA and the extract of composite S were found to stimulate growth in the log phase, but this stimulation was not statistically significant. However, EGDMA, TEGDMA, and the extract of composite S did stimulate the total growth of S. sobrinus. In the assays with L. acidophilus, Bis-GMA, UDMA, and the extract of composite A inhibited the growth in the log phase, whereas TEGDMA stimulated it. Furthermore, EGDMA, TEGDMA, and the extract of composite S stimulated the biomass production of L. acidophilus. We conclude from our results that a release of EGDMA and TEGDMA from resin composites should be avoided due to their growth-stimulating effects on the caries-associated micro-organisms S. sobrinus and L. acidophilus.
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Affiliation(s)
- C Hansel
- Department of Conservative Dentistry and Periodontology, Medical University Hannover, Germany
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21
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Affiliation(s)
- R P Darveau
- Bristol-Myers Squibb, Seattle, Washington, USA
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22
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Lloyd CH, Scrimgeour SN, Brown D, Clarke RL, Curtis RV, Hatton PV, Ireland AJ, McCabe JF, Nicholson JW, Setcos JC, Sherriff M, van Noort R, Watts DC, Whitters CJ, Wood D. Dental materials: 1995 literature review. J Dent 1997; 25:173-208. [PMID: 9175346 DOI: 10.1016/s0300-5712(96)00077-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
This critical review of the published literature on dental materials for the year 1995 has been compiled by the Dental Materials Panel of the United Kingdom. It continues the series of annual reviews started in 1973 and published in the Journal of Dentistry. Emphasis has been placed upon publications which report upon the materials science or clinical performance of the materials. The review has been divided by accepted materials classifications (fissure sealants, glass polyalkenoate cements, resin composites, dentine bonding, dental amalgam, endodontic materials, casting alloys, investment materials, resin-bonded bridges and ceramo-metallic restorations, all ceramic restorations, denture base and soft lining materials, impression materials, dental implants, orthodontic materials and biomechanics). Three hundred and thirty articles published in 68 titles have been reviewed.
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Affiliation(s)
- C H Lloyd
- University of Dundee Dental School, Dundee, UK
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23
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Allen EP, Bayne SC, Donovan TE, Hansson TL, Klooster J, Kois JC. Annual review of selected dental literature. J Prosthet Dent 1996; 76:56-93. [PMID: 8814636 DOI: 10.1016/s0022-3913(96)90347-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- E P Allen
- Baylor College of Dentistry, Dallas, Tex., USA
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