Parein A M, Eckert S E, Wollan P C, Keller E E
Department of Dental Specialties, Mayo Clinic, Rochester, Minn, USA.
J Prosthet Dent. 1997 Jul;78(1):34-42. doi: 10.1016/s0022-3913(97)70085-4.
Because there is a lack of long-term data, it is unclear whether the determinants of implant and prosthesis survival include the location, angle, design, or number of implants and use of prosthesis cantilevers.
This retrospective study evaluated the long-term outcome, determinants of outcome, and the type and prevalence of prosthetic complications in a series of patients treated consecutively with Brånemark implants in the partially edentulous posterior mandible.
A total of 392 consecutively placed Brånemark implants were inserted in 152 partially edentulous patients and restored with 56 single-tooth and 168 fixed partial dentures restorations.
The cumulative success rates of implants and prostheses were 89.0% +/- 0.03% and 81.9% +/- 0.03%, respectively, at 6 years, with no further decrease in success noted during the remainder of the 10-year study. Significantly fewer major complications were found in prostheses supported by one or more implants, located exclusively in premolar sites, versus prostheses supported by either molar implant(s) or both premolar and molar implants. In single-tooth restorations, fewer major complications were seen in the cemented restorations, compared with the screw retained.
The results were strongly influenced by the phase of experience.
由于缺乏长期数据，目前尚不清楚种植体和修复体存活的决定因素是否包括种植体的位置、角度、设计或数量以及修复体悬臂的使用情况。
本回顾性研究评估了一系列在下颌后牙部分牙列缺损患者中连续接受Brånemark种植体治疗的患者的长期疗效、疗效的决定因素以及修复并发症的类型和发生率。
共为152例部分牙列缺损患者植入392颗连续放置的Brånemark种植体，并用56颗单颗牙修复体和168颗固定局部义齿进行修复。
在6年时，种植体和修复体的累积成功率分别为89.0%±0.03%和81.9%±0.03%，在为期10年的研究剩余时间内，成功率没有进一步下降。与由磨牙种植体或前磨牙和磨牙种植体共同支持的修复体相比，由一个或多个仅位于前磨牙部位的种植体支持的修复体出现的主要并发症明显更少。在单颗牙修复体中，与螺丝固位修复体相比，粘结固位修复体出现的主要并发症更少。
结果受经验阶段的影响很大。
