摘要
目的比较不同类型残冠、残根行牙冠延长术后的临床疗效及影响因素。方法选取来我科就诊,需行牙冠延长术的96名患者,行牙冠延长术的残冠、残根120颗。根据残冠残根形成的原因分为2组,折裂组和龋坏组。记录并比较2组牙体缺损所累及的牙面,及术前断缘的探诊深度,观察术后4-6周根断面暴露情况。结果2组缺损累及牙面不同,折裂组多发生在腭（舌）侧,龋坏组多发生在邻面或唇（颊）侧（P〈0.01）;折裂组术前断缘的探诊深度明显高于龋坏组（P〈0.01）;62颗牙因折裂行冠延长术后满意者34颗牙（54.8%）,58颗牙因龋坏行冠延长术后满意者48颗牙（82.8%）,差异有统计学意义（P〈0.01）。结论牙冠延长术的临床疗效受多种因素影响,龋源性冠延长术的临床疗效明显好于折裂性冠延长。
Objective To investigate the clinical effect of crown lengthening surgery of different kinds of residual crowns and roots and its influencing factors. Methods A total of 120 residual crowns and roots of 96 patients were selected for crown lengthening in this study. The 120 teeth were divided into two groups according to the reasons that lead to residual crowns and roots, group F （ caused by fracture ） and group C （ caused by caries ）. The locations of defects and probing depths of subgingival margin of the residual crowns and roots were recorded and compared before surgery. The patients were followed up for 4 to 6 weeks after surgery and the clinical effects evaluated and compared. Results In group F, the teeth defects were mainly located on palatal（lingual） sides, and in group C ,the teeth defects were located on proximal or labial （buecal） sides. Probing depths of teeth margin before surgery in group F were much higher than those in group C （P 〈 0. 01 ）. Thirty-four teeth （54. 8% ） in group F （total 62 ） and 48 teeth （82. 8% ） in group C （total 58 ）obtained satisfactory effect （P 〈 0.01 ）. Conclusion Residual crowns and roots caused by caries could achieved better clinical effect than those caused by fracture for crown lengthening.
出处
《北京口腔医学》
CAS
2014年第3期165-168,共4页
Beijing Journal of Stomatology
关键词
折裂
龋坏
牙冠延长术
临床疗效
Teeth fracture
Teeth caries
Crown lengthening surgery
Clinical effect
