Friberg B, Nilson H, Olsson M, Palmquist C
Brånemark Clinic, Public Dental Health Service, Göteborg, Sweden.
Clin Oral Implants Res. 1997 Aug;8(4):279-85. doi: 10.1034/j.1600-0501.1997.080405.x.
The 5-year result of a prospective 3-center study is presented, comprising 103 patients with 288 Mk II self-tapping and 275 standard implants of the Brånemark System. Out of 363 mandibular and 200 maxillary fixtures, one Mk II was lost of the lower jaw and 13 of each implant type failed in maxillae during the study period. Cumulative prosthesis stability was 97%. Five patients accounted for more than 85% of the fixture losses. Marginal bone resorption was similar for both implant designs. Apart from the implant failures and one patient exhibiting disturbed nerve sensation of the mental nerve, no major complications were encountered. Overall, this study revealed equal cumulative success rates for standard and Mk II implants after 5 years of observation. Mandibular implants exhibited greater success rates (100%) for both tested implant types compared to maxillary implants (87%).
本文呈现了一项前瞻性三中心研究的5年结果，该研究纳入了103例患者，共植入288颗Mk II自攻型和275颗Brånemark系统标准种植体。在363颗下颌种植体和200颗上颌种植体中，研究期间下颌有1颗Mk II种植体丢失，上颌每种种植体类型各有13颗失败。累计义齿稳定性为97%。5例患者的种植体丢失占比超过85%。两种种植体设计的边缘骨吸收情况相似。除了种植体失败以及1例患者出现颏神经感觉障碍外，未出现其他重大并发症。总体而言，该研究显示，经过5年观察，标准种植体和Mk II种植体的累计成功率相同。与上颌种植体（87%）相比，两种受试种植体类型的下颌种植体成功率更高（100%）。
