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The International Journal of Oral & Maxillofacial Implants
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Int J Oral Maxillofac Implants 6 (1991), No. 2     1. June 1991
Int J Oral Maxillofac Implants 6 (1991), No. 2  (01.06.1991)

Page 142-146


Early Failures in 4,641 Consecutively Placed Brånemark Dental Implants: A Study From Stage 1 Surgery to the Connection of Completed Prostheses
Friberg, Bertil / Jemt, Torsten / Lekholm, Ulf
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).

Keywords: Brånemark implants, failures