全瓷高嵌体对后牙根管治疗后牙体缺损的修复作用

Therapeutic efficacy of all-ceramic onlay restoration on tooth defect after root canal therapy

【目的】探讨全瓷高嵌体在后牙根管治疗后的牙体缺损修复中的应用效果。【方法】选取2015年1月至2016年12月在我院进行根管治疗病例100例(共计240颗后牙),采用全瓷高嵌体修复,USPHS改良标准评估修复效果。【结果】1颗前磨牙高嵌体在修复完成4个月后脱落,重新粘接,随访期内固位良好,未见脱落;1颗前磨牙高嵌体在修复完成3个月、1颗磨牙高嵌体在修复完成5个月时边缘嵴崩瓷,邻接关系未受影响,经调牙合、抛光后继续正常使用。随访期内全瓷高嵌体修复成功率为98.5%。【结论】全瓷高嵌体应用于根管治疗后的牙体缺损修复中,在美学、功能学及生物学上均可获得良好效果,值得临床推广应用。

[Objective] To explore the application effect of all porcelain onlay in the repair of dental defect after root canal therapy. [ Methods ] A total of 100 cases undergoing root canal therapy in our hospital from January 2015 to December 2016 （including 240 molars） were selected. All porcelain onlay repair was performed. Improved standard evaluation of USPHS was used for the evaluation. [ Results] One premolar onlay fell off 4 months later after the restoration of prosthesis, and no shedding was found in the follow-up period after rebonding. One premolar onlay 3 months later and one molar 5 months later appeared local porcelain avalanche, but it did not affect the use and the adjacency relationship. There was no further damage to the original sample after the adjustment treatment and no secondary caries. The success rate of all-ceramic onlay repair during the whole follow-up period was 98.5%. [Conclusion] All-ceramic onlay applied in root canal therapy can achieve excellent quality in aesthetics, function and biology. It is worthy of clinical application.