Trammell Kyle, Geurs Nico C, O'Neal S Jean, Liu Perng-Ru, Haigh Sandra J, McNeal Sandre, Kenealy James N, Reddy Michael S
University of Alabama at Birmingham School of Dentistry, Birmingham, Alabama 35294-0007, USA.
Int J Periodontics Restorative Dent. 2009 Dec;29(6):599-605.
Recent observations suggest that less bone loss may result from placing a more medialized abutment on an implant (platform switching). The objective of this study was to measure the radiographic crestal bone loss and biologic width around conventional and platform-switched implants. Implants were randomly assigned into conventional or switched categories within the same prosthesis. Twenty-five implants were placed and observed in the mandibles of 10 patients for 2 years. A regression analysis demonstrated a significant difference between groups (P < or = .0001). These findings suggest that less crestal bone loss occurs around a platform-switched dental implant versus a conventional implant.
近期观察表明，在种植体上放置更偏向内侧的基台（平台转换）可能会减少骨质流失。本研究的目的是测量传统种植体和平台转换种植体周围的影像学牙槽嵴骨吸收及生物学宽度。在同一修复体中，种植体被随机分为传统组或转换组。在10例患者的下颌骨中植入25枚种植体并观察2年。回归分析显示两组间存在显著差异（P≤0.0001）。这些结果表明，与传统种植体相比，平台转换牙种植体周围的牙槽嵴骨吸收更少。
