title: Marginal adaptation of a low-shrinkage silorane-based composite: 1-year randomized clinical trial.
abstract: The aim of the present study was to examine the marginal adaptation of a new low-shrinkage silorane-based composite material (Filtek™ Silorane, 3M-Espe) by comparing it with a methacrylate-based composite material (CeramX™, Dentsply DeTrey). In particular, we wanted to test the hypothesis that reduced polymerization shrinkage would improve the marginal adaptation. Seventy-two patients participated in the study. A total of 158 restorations were placed in 80 premolars and 78 molars. Only Class II restorations were included, and each patient could contribute with more than one tooth. The restorations were scored at baseline and after one year. While statistical comparison of marginal adaptation at follow-up indicated better performance of CeramX™ both occlusally and approximally (p = 0.01 and p < 0.01), the low kappa value (32%) reflects the difficulty to assess marginal adaptation clinically. The reduction in polymerization shrinkage demonstrated in the laboratory was not clinically significant in the present study.
authors.affiliation: Department of Pediatric Dentistry, School of Dentistry, Faculty of Health Sciences, Århus University, Århus, Denmark. malene.schmidt@odontologi.au.dk
authors.forename: Malene
authors.initials: M
authors.lastname: Schmidt
authors.forename: Lise-Lotte
authors.initials: LL
authors.lastname: Kirkevang
authors.forename: Preben
authors.initials: P
authors.lastname: Hørsted-Bindslev
authors.forename: Sven
authors.initials: S
authors.lastname: Poulsen
mesh_terms: D000328:Adult; D003188:Composite Resins; D003737:Dental Cavity Preparation / Q000145:classification; D018772:Dental Marginal Adaptation; D003793:Dental Restoration, Permanent / Q000379:methods*; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D016017:Odds Ratio; D058105:Polymerization; D062047:Silorane Resins; D012833:Siloxanes
chemical_list: C520091:CeramX; D003188:Composite Resins; D062047:Silorane Resins; D012833:Siloxanes; C555513:silorane composite resin