title: Effect of prefabricated bar design with implant-stabilized prostheses on ridge resorption: a clinical report.
abstract: This investigation was concerned with the resorption of the posterior mandibular residual ridge in patients wearing mandibular overdentures supported by either parallel-sided bars (rigid joint) or oval straight bars (resilient joint) on two activated implants. Rotational tomographs were taken shortly after implant placement and up to 8 years later. Using proportional measurement, the area of residual ridge was measured in bilateral posterior areas. Patients rehabilitated with implant-stabilized mandibular overdentures demonstrated posterior mandibular residual ridge resorption at low rates, which were not significantly influenced by the design of the prefabricated bar.
authors.affiliation: Department of Prosthetic Dentistry, St Bartholomew's School of Medicine and Dentistry, London, United Kingdom.
authors.forename: P S
authors.initials: PS
authors.lastname: Wright
authors.forename: R M
authors.initials: RM
authors.lastname: Watson
mesh_terms: D000328:Adult; D000368:Aged; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D001641:Bicuspid; D017267:Dental Prosthesis Design; D017268:Dental Prosthesis Retention / Q000295:instrumentation*; D019094:Dental Prosthesis, Implant-Supported / Q000009:adverse effects*; D003828:Denture, Overlay / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008297:Male; D008336:Mandibular Diseases / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D008875:Middle Aged; D008963:Molar; D018579:Patient Selection; D014056:Tomography, X-Ray