title: Evaluation of implants placed with barrier membranes. A restrospective follow-up study up to five years.
abstract: This follow-up study evaluated clinical and radiographic parameters of dental implants placed in combination with guided bone regeneration with barrier membranes. All implants functioned well up to 60 months after insertion. Forty-one patients, with a total of 72 augmented implants, who participated in a regular maintenance protocol, were investigated. Annual Periotest values (median value, - 3) revealed stable periimplant conditions and sustained osseointegration. At 6 months and annually thereafter up to five years, the radiographic evaluation yielded mean bone losses of 0.8, 1.25, 1.39, 1.42, 1.42 and 1.39 mm, respectively, with a range from 0 to 3.5 mm. No implant failures or losses were recorded. The results demonstrated stable periimplant conditions up to five years after membrane-protected osseous regeneration, with no significant differences in the radiographic bone level in regard to region, jaw or bone graft. Premature membrane exposure resulted in a significantly higher crestal bone loss up to 24 months. The newly formed bone appeared to be able to withstand functional loading for up to 60 months in a predictable manner.
authors: Department of Prosthetic Dentistry, School of Dental Medicine, Karl-Franzens-University Graz, Austria. Martin.Lorenzoni@uni-graz.at
authors: Martin
authors: M
authors: Lorenzoni
authors: Christof
authors: C
authors: Pertl
authors: Raoul A
authors: RA
authors: Polansky
authors: Norbert
authors: N
authors: Jakse
authors: Walther A
authors: WA
authors: Wegscheider
mesh_terms: D000328:Adult; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging / Q000209:etiology; D001861:Bone Regeneration; D018786:Bone Substitutes; D016025:Bone Transplantation; D003758:Dental Implantation, Endosseous / Q000009:adverse effects / Q000379:methods*; D015921:Dental Implants; D017268:Dental Prosthesis Retention; D005260:Female; D005500:Follow-Up Studies; D016557:Guided Tissue Regeneration, Periodontal / Q000379:methods*; D006801:Humans; D008297:Male; D008567:Membranes, Artificial; D008875:Middle Aged; D008903:Minerals; D011138:Polytetrafluoroethylene; D011859:Radiography; D012189:Retrospective Studies; D018709:Statistics, Nonparametric
chemical_list: C077540:Bio-Oss; D018786:Bone Substitutes; D015921:Dental Implants; D008567:Membranes, Artificial; D008903:Minerals; D011138:Polytetrafluoroethylene