title: Periodontal indices around natural and titanium abutments: a longitudinal multicenter study.
abstract: This multicenter prospective study on the use of an implant system involved 9 centers and reports on the periodontal aspects after 3 years of observation. A total of 558 implants in 159 patients with 197 bridges all independent from natural teeth were originally included. Because of failures and patient withdrawals the number of implants was reduced to 460 and bridges to 174. The cumulative success rate for implants, starting from implant placement, is 94.3% after 2 years and 93.9% after 3 years indicating a leveling of implant loss. Failures concentrated in patients with a high plaque index. The loss of marginal bone was during the second and third years only 0.03 mm per year as an average while it was 0.4 mm during the first year. There were no reports of intense gingival inflammation in any of the patients and the plaque and gingivitis index behaved similarly around abutments and teeth. The probing pocket depth was significantly reduced over the observation time. The resistance towards marginal bone loss around these implants confirms the previous studies on fully edentulous patients.
authors.affiliation: Department of Periodontology, Catholic University of Leuven, Belgium.
authors.forename: D
authors.initials: D
authors.lastname: van Steenberghe
authors.forename: B
authors.initials: B
authors.lastname: Klinge
authors.forename: U
authors.initials: U
authors.lastname: Lindén
authors.forename: M
authors.initials: M
authors.lastname: Quirynen
authors.forename: I
authors.initials: I
authors.lastname: Herrmann
authors.forename: C
authors.initials: C
authors.lastname: Garpland
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D016301:Alveolar Bone Loss / Q000473:pathology; D000044:Dental Abutments; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D003774:Dental Plaque Index; D005260:Female; D005500:Follow-Up Studies; D005884:Gingival Hemorrhage / Q000473:pathology; D005891:Gingivitis / Q000473:pathology; D006801:Humans; D007576:Jaw, Edentulous, Partially / Q000601:surgery; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D010512:Periodontal Index; D011446:Prospective Studies; D011475:Prosthesis Failure; D013499:Surface Properties; D014025:Titanium
chemical_list: D015921:Dental Implants; D014025:Titanium