纵折磨牙的保存修复  

Restoration of vertically fractured molars

作　　者：刘侠[1] 王文梅[2] 魏文佳[1] 张洁[1] 吴文蕾[3] 

机构地区：[1]南京大学医学院附属口腔医院修复科,主治医师江苏210008 [2]南京大学医学院附属口腔医院,副院长主任医师江苏210008 [3]南京大学医学院附属口腔医院牙周科,主任副主任医师江苏210008

出　　处：《口腔颌面修复学杂志》2007年第1期31-33,37,共4页Chinese Journal of Prosthodontics

基　　金：南京市专项基金资助(ZKX05026)

摘　　要：目的:保存纵折的磨牙,扩大保留的适应证,提高保存的成功率。方法:用Super-Bond C&B粘结剂口内直接粘结牙折片后,冠修复或去除牙折片后,牙冠延长术或切龈术暴露根断面后冠修复。结果:65例纵折磨牙修复1年后成功27例(41.5%),良好21例(32.3%),缺陷6例(9.2%),失败11例(16.9%)。结论:(1)Su-per-Bond C&B粘结剂口内直接粘结牙折片后冠修复和其它方法相比创伤性小,操作简便,可以有条件的保存部分纵折磨牙。(2)纵折磨牙的修复中,以斜折至龈下4mm以内,可以通过切龈术或牙冠延长术暴露折断面,而后冠修复者效果最好。Objective： To repair vertically fractured molars and expand the indication and promote the successful rate of the repair. Methods： 65 Vertically fractured molars were divided into two groups. In one group, the coronal fragments were cementation with an acrylic resin cement （Super-Bond C＆B）, and received crowns. Whereas in the other group, Coronal fragments were extracted and subgingival fragments were exposed by crown lengthening or gingivectomy, then the teeth received crowns too. Results： During a 1-year period, 27 teeth were successfully restored,and 21 teeth were functional without any complaints, and 6 teeth still had symptoms, and 1 lcases were failed. Conclusion： It is suggested that the way that the coronal fragments were cementation with an acrylic resin cement （Super-Bond C＆B） is atraumatical and easy to operate and can be used to repair fractured molars conditionally. It is also suggested that the teeth with no more than 4 mm subgingival margin are the suitable indications for the crown lengthening or gingivectomy followed by crown restoration.

关 键 词：磨牙 牙折裂 牯结 牙冠延长术 保存修复 

分 类 号：R783.3[医药卫生—口腔医学]