title: Early failures in 4,641 consecutively placed Brånemark dental implants: a study from stage 1 surgery to the connection of completed prostheses.
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).
authors.affiliation: The Brånemark Clinic, Public Dental Health Service of Gothenburg, Faculty of Odontology, University of Gothenburg.
authors.forename: B
authors.initials: B
authors.lastname: Friberg
authors.forename: T
authors.initials: T
authors.lastname: Jemt
authors.forename: U
authors.initials: U
authors.lastname: Lekholm
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016301:Alveolar Bone Loss / Q000209:etiology; D003758:Dental Implantation, Endosseous / Q000009:adverse effects*; D015921:Dental Implants / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D007575:Jaw, Edentulous; D007576:Jaw, Edentulous, Partially; D008297:Male; D008875:Middle Aged; D016348:Osseointegration; D011475:Prosthesis Failure; D012189:Retrospective Studies; D012737:Sex Factors; D014025:Titanium
chemical_list: D015921:Dental Implants; D014025:Titanium