前牙因外伤折断后，断面位于龈上者较易修复，位于龈下者甚困难。文献报道用牵引法［１］或用铸造核桩修复［２］，但均是利用了残根，放弃了牙冠，且修复过程复杂。我们利用患者的自然牙冠进行修复，不仅方法简单，而且美观逼真。１　材料和方法１．１　临床资料　自１９８９ Anterior teeth due to traumatic fracture, the section is located in the suprapatellar easier to repair, located in the subgingival is very difficult. Reported in the literature using the traction method [1] or cast core pile repair [2], but they are the use of residual roots, giving up the crown, and the repair process is complicated. We use the patient's natural crown for repair, not only simple, but beautiful and realistic. 1 Materials and Methods 1.1 Clinical data since 1989