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Early failures in 4,641 consecutively placed Brånemark dental implants: a study from stage 1 surgery to the connection of completed prostheses.

Journal article
Authors Bertil Friberg
Torsten Jemt
Ulf Lekholm
Published in The International journal of oral & maxillofacial implants
Volume 6
Issue 2
Pages 142-6
ISSN 0882-2786
Publication year 1991
Published at Institute of Odontology
Pages 142-6
Language en
Links www.ncbi.nlm.nih.gov/entrez/query.f...
Keywords Adolescent, Adult, Aged, Aged, 80 and over, Alveolar Bone Loss, etiology, Dental Implantation, Endosseous, adverse effects, Dental Implants, statistics & numerical data, Female, Humans, Jaw, Edentulous, Jaw, Edentulous, Partially, Male, Middle Aged, Osseointegration, Prosthesis Failure, Retrospective Studies, Sex Factors, Titanium
Subject categories Surgical research

Abstract

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).

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