Henry P J, Laney W R, Jemt T, Harris D, Krogh P H, Polizzi G, Zarb G A, Herrmann I
Department of Restorative Dentistry, University of Western Australia, Perth, Australia.
Int J Oral Maxillofac Implants. 1996 Jul-Aug;11(4):450-5.
One hundred seven Brånemark implants were placed in 92 patients participating in an international multicenter trial on single-implant restorations at seven centers. The patients were followed for 5 years in a prospective study focusing on implant success and crown function. Plaque and gingival indexes, as well as probing depths, were recorded around teeth and implants. The marginal bone level at implants was determined from intraoral radiographs. Only three implants (2.8%) had been lost at the final annual checkup. During the follow-up period, a total of 17 patients dropped out or were excluded because of nonconformity with the protocol. Based on the remaining patients, a total of 86 implants were clinically and radiographically evaluated at the 5-year follow-up period, resulting in a cumulative success rate of 96.6% (71 implants) in the maxillae and 100% (15 implants) in the mandibles. Plaque and gingival indexes showed a similar pattern of good health around both natural teeth and titanium abutments. The marginal bone loss during the 5-year period did not exceed 1 mm as a mean for all implants analyzed. The most frequent complication recorded during the follow-up was loosening of the abutment fixation screw. The outcome of this study indicated that safe and highly predictable results can be obtained for 5 years when Brånemark implants are used to support single-tooth restorations.
107枚Brånemark种植体被植入92名参与一项国际多中心单颗种植体修复试验的患者口中，该试验在7个中心开展。在一项聚焦种植体成功率和牙冠功能的前瞻性研究中，对患者进行了5年的随访。记录了牙齿和种植体周围的菌斑和牙龈指数以及探诊深度。通过口腔内X光片确定种植体的边缘骨水平。在最后一次年度检查时，仅有3枚种植体（2.8%）丢失。在随访期间，共有17名患者因不符合方案而退出或被排除。基于剩余患者，在5年随访期对总共86枚种植体进行了临床和影像学评估，结果上颌骨的累积成功率为96.6%（71枚种植体），下颌骨为100%（15枚种植体）。菌斑和牙龈指数显示，天然牙和钛基台周围的健康状况类似。在5年期间，所有分析种植体的边缘骨吸收平均不超过1毫米。随访期间记录到的最常见并发症是基台固定螺丝松动。本研究结果表明，使用Brånemark种植体支持单颗牙齿修复时，5年内可获得安全且高度可预测的结果。
