Author(s): Adell R, Eriksson B, Lekholm U, Brnemark PI, Jemt T
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Abstract 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.
This article was published in Int J Oral Maxillofac Implants
and referenced in Dentistry