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The International Journal of Oral & Maxillofacial Implants



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Int J Oral Maxillofac Implants 5 (1990), Nr. 4     1. Dez. 1990
Int J Oral Maxillofac Implants 5 (1990), Nr. 4  (01.12.1990)

Seite 347-359, Sprache: Englisch

A Long-Term Follow-up Study of Osseointegrated Implants in the Treatment of Totally Edentulous Jaws
Adell, Ragnar / Eriksson, Bo / Lekholm, Ulf / Brånemark, Per-lngvar / Jemt, Torsten
This study reviews the long-term outcome of prostheses and fixtures (implants) in 759 totally edentulous jaws of 700 patients. A total of 4,636 standard fixtures were placed and followed according to the osseointegration method for a maximum of 24 years by the original team at the University of Göteborg. Standardized annual clinical and radiographic examinations were conducted as far as possible. A lifetable approach was applied for statistical analysis. Sufficient numbers of fixtures and prostheses for a detailed statistical analysis were present for observation times up to 15 years. More than 95% of maxillae had continuous prosthesis stability at 5 and 10 years, and at least 92% at 15 years. The figure for mandibles was 99% at all time intervals. Calculated from the time of fixture placement, the estimated survival rates for individual fixtures in the maxilla were 84%, 89%, and 92% at 5 years; 81% and 82% at 10 years; and 78% at 15 years. In the mandible they were 91%, 98%, and 99% at 5 years; 89% and 98% at 10 years; and 86% at 15 years. (The different percentages at 5 and 10 years refer to results for different routine groups of fixtures with 5 to 10, 10 to 15, and 1 to 5 years of observation time, respectively.) The results of this study concur with multicenter and earlier results for the osseointegration method.

Schlagwörter: Brånemark System , long-term follow-up, oral implants, osseointegration, total edentulism
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