title: Comparison of partial and full crowns as retainers in the same bridge.
abstract: The purpose of this study was to assess longitudinally the success of partial and full crown abutment pairs in the same bridges. Fifty patients with a mean age of 45 years (range 22-70 years) were examined during spring 1981 (1-5 year follow-up), 33 of whom were examined a second time during spring 1990 (10-15 year follow-up). The status of the partial crowns, full crowns, and their abutment teeth was assessed using standardized questions, and clinical and radiographic examinations. At the first follow-up examination, all partial and full crowns, and consequently all bridges, were still in use. Before the second follow-up examination one of the full crown abutments had become badly decayed, and the bridge, including the partial crown, had been removed. The failure rate was 0.2% per year for the full crown as a unit, and consequently 0.2% per year for the bridge as a unit.
mesh_terms: D000180:Acrylic Resins; D000328:Adult; D000368:Aged; D003442:Crowns; D000044:Dental Abutments; D003731:Dental Caries / Q000000981:diagnostic imaging / Q000209:etiology; D003772:Dental Pins; D017267:Dental Prosthesis Design; D017269:Dental Prosthesis Repair; D003801:Dental Veneers; D003779:Denture Design; D003829:Denture, Partial; D004955:Esthetics, Dental; D005260:Female; D005500:Follow-Up Studies; D006047:Gold Alloys; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D010483:Periapical Diseases / Q000000981:diagnostic imaging / Q000209:etiology; D011475:Prosthesis Failure; D011859:Radiography; D014098:Toothache / Q000209:etiology
chemical_list: D000180:Acrylic Resins; D006047:Gold Alloys