近年来,对于前牙牙冠缺损,临床上普遍采用光固化复合树脂直接修复,或与金属支架联合修复,但其远期疗效尚不十分满意.1992年以来,我科采用了自断型攻纹钉与光固化复合树脂、金属支架与光固化复合树脂两种方法修复前牙牙冠缺损,现将1～3年的临床观察及疗效分析,报告如下. In recent years, the dental crown defects, the general clinical use of light-cured composite resin direct repair, or joint repair with the metal stent, but its long-term efficacy is not yet very satisfied .1992, our department has used a self-closing attack Nail and light-cured composite resin, metal stent and light-cured composite resin two methods of restoration of anterior crown defects, now 1 to 3 years of clinical observation and curative effect analysis, the report is as follows.