title: Evaluation of occlusal marginal adaptation of Class II resin-composite restorations.
abstract: This paper describes the results of an evaluation of the occlusal marginal adaptation of Class II restorations in a clinical trial. The margins of 183 resin composite and 61 amalgam restorations, made by three dentists, were assessed. An indirect evaluative method has been applied, that uses a shadowing photographic technique to produce images of impressions. The restorations were classified into excellent and nonexcellent marginal adaptation categories and on this basis influencing factors were determined. Resin composite restorations appeared to show more 'excellent' margins than amalgam restorations (64.5 percent and 21.3 percent, respectively). The variable mainly influencing the marginal adaptation of the composite restorations was the dentist. In addition, the influence of an occlusal level is discussed, since a difference of marginal adaptation between bevelled and nonbevelled parts of the occlusal outline was observed.
authors.affiliation: Department of Pediatric Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), The Netherlands.
authors.forename: C M
authors.initials: CM
authors.lastname: Kreulen
authors.forename: W E
authors.initials: WE
authors.lastname: van Amerongen
authors.forename: H B
authors.initials: HB
authors.lastname: Akerboom
authors.forename: P J
authors.initials: PJ
authors.lastname: Borgmeijer
authors.forename: R J
authors.initials: RJ
authors.lastname: Gruythuysen
mesh_terms: D000328:Adult; D001641:Bicuspid; D016009:Chi-Square Distribution; D002983:Clinical Competence; D003188:Composite Resins; D003722:Dental Alloys; D003723:Dental Amalgam; D003737:Dental Cavity Preparation / Q000379:methods; D003763:Dental Leakage / Q000517:prevention & control; D003793:Dental Restoration, Permanent / Q000592:standards*; D006801:Humans; D016015:Logistic Models; D008963:Molar; D017063:Outcome Assessment, Health Care; D011791:Quartz; D019279:Resin Cements; D013499:Surface Properties
chemical_list: D003188:Composite Resins; D003722:Dental Alloys; D019279:Resin Cements; C065770:Herculite XR; C067786:Visio-Molar; D011791:Quartz; C084849:Clearfil Ray Posterior; C036886:tytin; D003723:Dental Amalgam