我科自1991年以来应用固位钉光固化粘接技术修复前牙缺损56例，并进行追踪观察，现报道如下。1资料与方法本组42例，共计56颗牙齿，其中．男性28例，女性14例。均限于前牙因外伤龋坏而牙体破坏者。常规去净腐质及软化牙本质、龋损过大者，需行根管治疗后修复。切角缺损或牙冠切 Our department since 1991, the application of fixation nail fixation curing 56 cases of anterior defect, and follow-up observation, are reported below. 1 Materials and Methods The group of 42 cases, a total of 56 teeth, of which. 28 males and 14 females. Are limited to anterior teeth due to trauma caries and tooth damage. Conventional to go to the net rotten and soften the dentin, carious lesions who need to be treated after root canal repair. Chamfer or crown incision