title: Reduced dental plaque accumulation on composite gold alloy margins.
abstract: Restoration of tooth surfaces with materials that inhibit formation of heavy bacterial plaque accumulations could be important in the treatment of patients with existing oral disease or in reducing the likelihood for periodontal disease. Captek is a dental gold composite material used to produce copings for ceramometal restorations that has been reported to inhibit plaque accumulation. In this study, the oral bacteria of nine periodontally healthy subjects with a total of 42 gold composite copings were sampled. Contralateral teeth with normal tooth surfaces were also sampled as controls. The quantitative presence of forty bacteria was determined in each sample by DNA:DNA hybridization. The results indicated that the porcelain/gold composite alloy coping surfaces had significantly fewer bacteria than the control normal tooth surfaces (71% reduction). The percentage composition, however, did not differ significantly between surfaces.
authors.affiliation: The Forsyth Institute, Boston, MA 02115, USA.
authors.forename: J M
authors.initials: JM
authors.lastname: Goodson
authors.forename: I
authors.initials: I
authors.lastname: Shoher
authors.forename: S
authors.initials: S
authors.lastname: Imber
authors.forename: S
authors.initials: S
authors.lastname: Som
authors.forename: D
authors.initials: D
authors.lastname: Nathanson
mesh_terms: D000704:Analysis of Variance; D001422:Bacterial Adhesion; D003442:Crowns; D015342:DNA Probes; D004269:DNA, Bacterial / Q000032:analysis; D003773:Dental Plaque / Q000382:microbiology* / Q000517:prevention & control*; D006047:Gold Alloys; D006801:Humans; D007284:Inlays; D016876:Metal Ceramic Alloys; D015588:Observer Variation; D015203:Reproducibility of Results; D018709:Statistics, Nonparametric; D013499:Surface Properties
chemical_list: C110874:Captek alloy; D015342:DNA Probes; D004269:DNA, Bacterial; D006047:Gold Alloys; D016876:Metal Ceramic Alloys