两种牙周术式对龈下残根桩核冠修复的疗效分析  

Restorative effects of gingivectomy and surgical crown lengthening on subgingival residual roots

作　　者：邓霞[1] 何陨[2] 

机构地区：[1]核工业四一六医院口腔科,成都610051 [2]成都大学医护学院

出　　处：《中华临床医师杂志（电子版）》2014年第21期55-59,共5页Chinese Journal of Clinicians(Electronic Edition)

基　　金：四川省教育厅项目(13ZB0337);成都大学校基金项目(2012XJZ08)

摘　　要：目的比较牙龈切除术与牙冠延长术应用于龈下残根的修复效果。方法选择龈下残根患牙32颗,分别采用牙龈切除术与牙冠延长术完全暴露断面,再行常规桩冠修复,通过术前、术后2周、6周及3个月复查观察患牙牙周探诊深度、出血指数、牙齿松动度,比较两组的临床疗效。结果术后2周牙冠延长术组患牙断缘均有效暴露,牙龈切除术组有4颗患牙因牙龈增生而排除,其余患牙术后2周、6周及3个月复查时龈袋深度、出血指数均比术前明显减少,牙冠延长术组的牙周指数均明显低于牙龈切除术组。结论在严格的适应证范围内,牙龈切除术与牙冠延长术应用于龈下残根均能暴露断缘,冠修复后效果后者的临床疗效优于前者。Objective The effects of gingivectomy and surgieal crown lengthening methods were compared on deep-seated subgingival residual roots. Methods Thirty-two teeth were selected and divided into A group （surgical erown lengthening group） and B group （gingivectomy group）. Regular restoration of post-core crowns were performed after the teeth cross-section were completely exposed..The clinic effects were compared by measuring probing depth （PD）, bleeding index （BI） and tooth mobility （TM） at the time of pre-operation, 2 weeks, 6 weeks and 3months after surgery. Results The cross-sections of the subgingival residual roots could be exposed effectively in both groups after periodontal surgery immediately. However, there were 4 residual roots be excluded because of the gum hyperplasia after 2 weeks of surgery. The periodontal index （PI） of the other teeth such as PD, BI and mobility degree （MD） decreased obviously at the time of 2 weeks, 6 weeks and 3 months after surgery, and the PI of A group were less than B group. Conclusion The cross-sections of the subgingival residual roots could be exposed by surgical crown lengthening and gingivectomy methods in the proper indications. The clinical effect of the former is better than the latter.

关 键 词：牙龈切除术 牙冠伸长术 牙周指数 龈下残根 生物学宽度 桩核冠 

分 类 号：R783.3[医药卫生—口腔医学]