Karlsson U, Gotfredsen K, Olsson C
Department of Prosthetic Dentistry, Public Dental Service, Norrköping, Sweden.
Int J Prosthodont. 1997 Jul-Aug;10(4):318-24.
This study presents the outcome of single-tooth restorations supported by Astra Tech single-tooth implants followed for 2 years. Forty-seven implants were placed in the same number of patients. Forty-three patients attended the second recall visit, and none of the evaluated implants have been removed. The mean marginal bone loss after 2 years of service was 0.31 (SD = 0.48) mm. Overall, few complications were recorded during the 2-year period, the most frequent of which were loose crowns (7).
本研究展示了采用Astra Tech单颗牙种植体支持的单颗牙修复体随访2年的结果。47颗种植体植入了相同数量的患者体内。43名患者参加了第二次复诊，且所有评估的种植体均未被移除。使用2年后的平均边缘骨吸收为0.31（标准差 = 0.48）毫米。总体而言，在这2年期间记录到的并发症较少，其中最常见的是牙冠松动（7例）。
