牙冠延长术保存残根的临床疗效观察  

Evaluation of the Clinical Effect of Crown Lengthening Surgery on Residual Root

作　　者：郑志强[1] 骆凯[2] 赵伟[1] 陈素凤[1] 林彬[2] 

机构地区：[1]福建医科大学附属口腔医院牙周科,福州350002 [2]福建医科大学附属口腔医院修复科,福州350002

出　　处：《福建医科大学学报》2009年第5期415-417,共3页Journal of Fujian Medical University

基　　金：福建省自然科学基金(2006J0112)

摘　　要：目的观察牙冠延长术对牙体缺损达龈下的残根修复的临床疗效,探讨牙冠延长术的适应症。方法对29颗缺损达龈下3mm的残根行牙冠延长术,根据牙根长度分为A组(13颗患牙,根长≥1.5cm)和B组(16颗患牙,1.2cm≤根长<1.5cm),于术后6周常规修复。比较术前、术后6周、修复后1月及3月的牙周探诊深度(PD)、龈沟出血指数(SBI)和牙松动度(MD),以评价临床疗效。结果29颗患牙术后牙周状况良好,总有效率为86.21%。术后各时间点PD、SBI均明显优于术前(P<0.05),但两组术后牙周指数比较差别无统计学意义(P>0.05)。A组术后无松动,B组术后56.25%出现Ⅰ度松动。结论牙冠延长术有利于残根的保存和修复,但要注意适应症的选择。Objective To evaluate the clinical effect of crown lengthening surgery on residual root with subgingivally involved defect. Methods 29 residual roots with subgingivally involved detect with- in 3mm were divided into two groups, group A（13 teeth, tooth root≥1. 5 cm ）, group B（16 teeth, 1.2 cm ≤tooth root〈1. 5 cm）. All teeth were treated by the crown lengthening first and restored 6 weeks after surgery. The parameters of probing depth（PD）, sulcus bleeding index（SBI） and tooth mobility degree （MD） were reviewed and analyzed before surgery, 6 weeks after surgery, 1 and 3 months after restora- tion. Results Periodontal conditions of the teeth were well and the overall effective rate was 86.21%. Postoperative PD and SBI were better than those preoperatively（P〈0.05）. But there were not differences among the two groups （P〉0.05）. There were more teeth showing increased mobility in group A than in group B after surgery. Conclusions Crown lengthening surgery has good clinical effect for the protection and restoration of residual root, but the indication must be selected properly.

关 键 词：牙冠延长术 根管疗法 牙髓疾病 义齿修复术 生物学 

分 类 号：R783[医药卫生—口腔医学]