Norton M R
Department of Oral and Maxillofacial Surgery, Charing Cross Hospital, London, England.
Int J Periodontics Restorative Dent. 1997 Dec;17(6):574-83.
This article presents the components and treatment protocol for the Astra Tech Single-Tooth Implant System, whose concept and design has been tailored to the specific needs of single-tooth replacement. Since July 1991 the author has consecutively placed 39 single-tooth implants, of which 27 are restored and in function. To date there have been no recorded fixture failures, and the bone loss seen around fixtures in the first and subsequent years is insignificant. Two crowns have had to be replaced, and three were recemented over the follow-up period. All patients have expressed considerable satisfaction with their restorations from an esthetic perspective, and the system has been shown to avoid undesirable complications when employed in patients with normal masticatory function.
本文介绍了Astra Tech单颗牙种植系统的组件和治疗方案，其概念和设计是针对单颗牙替换的特定需求而定制的。自1991年7月以来，作者连续植入了39颗单颗牙种植体，其中27颗已完成修复并投入使用。迄今为止，尚无种植体失败的记录，在第一年及之后几年中种植体周围的骨吸收不明显。在随访期间，有两颗牙冠需要更换，三颗进行了重新粘固。所有患者从美学角度对其修复效果都表示非常满意，并且该系统已被证明在咀嚼功能正常的患者中使用时可避免不良并发症。
