两种桩核系统修复低牙本质肩领残根的效果观察

摘要

目的:观察两种桩核系统在修复低牙本质肩领患牙的临床效果.方法:选取57例患者,86颗低牙本质肩领的前牙残根,随机分为两组.一组采用铸造金属桩核修复,另一组采用石英纤维桩核系统修复,最后采用烤瓷冠修复,修复后2年观察修复成功率及失败类型,并进行比较.结果:修复后2年通过临床观察评估,铸造金属桩核系统成功率(92.8％)显著高于石英纤维桩核系统(84.1％).根折是铸造金属桩核系统的主要失败类型,桩脱落是石英纤维桩核系统的主要失败类型.结论:铸造金属桩核系统修复低牙本质肩领前牙残根具有较好的临床效果,桩核系统的固位和受力情况对于这类修复体的临床成功率非常重要.%Objective To evaluate the effects of the two dowel systerms on clinical assessment in the restoration of residual root with lowwer ferrule length. Methods 86 teeth of residual anterior root were divideded into two groups.Group 1 the cast meta! dowels and cores were used.Group 2 quartz-fiber dowel systems were used.All the specimens were restored with porcelain fused metal crown after used two dowel systerms.After 2 years.the success rate and fail type of reparation were analyzed for clinical assessment. Results Over 2-year period, The successful rate (92.8%) of the cast metal dowels and cores was higher than that (84.1%) of the quartz-fiber dowel systems.The failures occurring in cast metal dowels and cores are fractures. The failures occurring in quartz-fiber dowel systems are debonding of posts. Conclusion The cast metal dowels and cores is a good method for the anterior root with lowwer ferrule length. Increasing the retention and abatementing the force are more significant to the clinical performance of restoration.