Jemt T, Pettersson P
Brånemark Clinic, Public Dental Health Service, Faculty of Odontology, Göteborg, Sweden.
J Dent. 1993 Aug;21(4):203-8. doi: 10.1016/0300-5712(93)90127-c.
The purpose of this study was to investigate restorative and postinsertion problems in patients provided with single implant supported restorations. Fifty consecutive single implant patients were reviewed over a period of 3 years following placement of artificial crowns. One (1.4%) of the 70 inserted implants was lost during the follow-up period, which gives a cumulative success rate of 98.5%. The most frequent complication was loosening of the single tooth abutment screw. This problem was associated with fistulas during the first year of clinical service. A more severe complication was that three adjacent teeth had to be endodontically treated due to accidental devitalization from surgical trauma during implant insertion. The mean marginal bone level adjacent to the implants was reduced 0.5 mm from crown insertion to the third annual review.
本研究的目的是调查接受单颗种植体支持修复的患者的修复情况及植入后问题。在人工牙冠植入后的3年时间里，对连续的50名单颗种植体患者进行了复查。在随访期间，70颗植入的种植体中有1颗（1.4%）丢失，累积成功率为98.5%。最常见的并发症是单颗牙基台螺钉松动。该问题在临床服务的第一年与瘘管有关。一个更严重的并发症是，由于种植体植入过程中的手术创伤导致3颗相邻牙齿意外失活，不得不对其进行根管治疗。从牙冠植入到第三次年度复查，种植体相邻的平均边缘骨水平降低了0.5毫米。
