Friberg B, Jemt T, Lekholm U
The Brånemark Clinic, Public Dental Health Service of Gothenburg, Faculty of Odontology, University of Gothenburg.
Int J Oral Maxillofac Implants. 1991 Summer;6(2):142-6.
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).
本研究包括4641颗布兰emark种植牙，从一期手术到修复体完成进行了回顾性随访。这些种植体在3年期间（1986年至1988年）植入943例颌骨，代表889例全口和部分无牙患者。颌骨和性别分布显示下颌骨（564/943）和女性（534/943）占优势。患者在植入种植体时的平均年龄为57.5岁（范围13至88岁）。只有69颗（1.5%）种植体未能成功整合，大多数失败发生在全口无牙的上颌骨（46/69），其中颌骨骨质松软且严重吸收。最短的种植体（7毫米）中也可见失败占多数。大多数活动种植体记录于基台连接（二期）手术时（48/69）。
