title: The effect of orthodontic bonding materials on dental plaque accumulation and composition in vitro.
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.
authors.affiliation: Department of Orthodontics, Eastman Dental Institute for Oral Health Care Sciences, University College London, 256 Gray's Inn Road, UK.
authors.forename: H
authors.initials: H
authors.lastname: Badawi
authors.forename: R D
authors.initials: RD
authors.lastname: Evans
authors.forename: M
authors.initials: M
authors.lastname: Wilson
authors.forename: D
authors.initials: D
authors.lastname: Ready
authors.forename: J H
authors.initials: JH
authors.lastname: Noar
authors.forename: J
authors.initials: J
authors.lastname: Pratten
mesh_terms: D018441:Biofilms; D019149:Bioreactors; D003738:Dental Cements / Q000737:chemistry* / Q000494:pharmacology; D003773:Dental Plaque / Q000473:pathology*; D005459:Fluorides / Q000378:metabolism; D006801:Humans; D066298:In Vitro Techniques; D009967:Orthodontic Appliances; D012463:Saliva / Q000382:microbiology; D012464:Saliva, Artificial; D013295:Streptococcus mutans / Q000378:metabolism; D013997:Time Factors
chemical_list: D003738:Dental Cements; D012464:Saliva, Artificial; D005459:Fluorides