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Volume 6 , Issue 2
Summer 1991
Pages 142-146

Early Failures in 4,641 Consecutively Placed Brånemark Dental Implants: A Study From Stage 1 Surgery to the Connection of Completed Prostheses

Bertil Friberg, DDS/Torsten Jemt, DDS, PhD/Ulf Lekholm, DDS, PhD

PMID: 1809668

This study comprised 4,641 Brånemark dental implants, which were retrospectively followed from stage 1 surgery to completion of the prosthetic restorations. The implants were placed during a 3-year period (1986 to 1988) in 943 jaws, representing 889 patients with complete and partial edentulism. The jaw and sex distribution revealed a predominance of mandibles (564/943) and females (534/943). The mean age of the patients was 57.5 years (range 13 to 88 years) at implant placement. Only 69 (1.5%) fixtures failed to integrate, and most losses were seen in completely edentulous maxillae (46/69), in which the jaw bone exhibited soft quality and severe resorption. A preponderance of failures could also be seen among the shortest fixtures (7 mm). A majority of the mobile implants were recorded at the abutment connection (stage 2) operation (48/69). (INT J ORAL MAXILLOFAC IMPLANTS 1991;6:142-146.)

Key words: Brånemark implants, failures

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