国产BLB种植系统10年存留率的观察与分析

Clinical observation and analysis of BLB implant system over 10 years

目的 BLB国产种植体的关注度相应降低,进而影响对其后期维护。文中通过10年随访观察评价国产BLB种植系统远期临床应用效果。方法随访2004年1月至2005年12月在南京市口腔医院种植科行BLB种植及修复的120例患者,共计179枚种植体。病例均采取Ⅰ期植入和Ⅱ期暴露的延期种植方式,上部结构固位方式有黏接和螺丝固位。分别于种植手术后当天、Ⅱ期手术前以及修复后3个月复查。此后每间隔1年复查。结果截至2017年12月BLB种植体失访率为6%,总留存率达95.2%。种植体失败原因主要为骨吸收、感染等导致种植体松动脱落。修复并发症包括基台反旋,中央螺丝松动,食物嵌塞,崩瓷等。上下颌失败病例数差异无统计学意义(P>0.05);前牙、前磨牙及磨牙失败病例数差异无统计意义(P>0.05)。结论在严格把握适应证的条件下,BLB种植系统可用于常规牙列缺损患者治疗。

Objective The lack of observation on domestic BLB implant affect its longterm maintenance.The long-term clinical effect of domestic BLB implant system was evaluated by a 10-year follow-up. Methods A total of 179 implants were placed in 120 patients from January 2004 to December 2005 in Nanjing Stomatological Hospital.Patients accepted implant pattern of stageⅠimplantation and stageⅡdelayed exposure and prostheses were completed.Upper crowns were either screw-retained or cemented.Follow-up observation includes post-operation immediately,pre-secondary operation,3 months and annually. Results Until December 2017,the rate of loss of follow-up was 6%and the overall survival rate was 95.2%.Implant failures were mainly due to the looseing of implant system caused by bone resorption and infection.Prosthetic complications include abutment loose,central screw loose,food impaction and porcelain fracture.There were no significant differences of failure cases comparing maxillary and mandible(P>0.05);neither comparing anterior teeth,pre-molars and molars(P>0.05) Conclusion When clinical indication is strictly controlled,BLB implant system is suitable for partially edentulous patients.