我院于1982年遇到一例左上颌侧切牙外伤引起的断根,折断线位于牙槽嵴下牙龈覆盖牙根的病例。如按一般常规必须拔除残根,再镶齿修复。我们破除常规敢于创新,采取保留牙根设计覆盖嵴式桩冠修复。随访2年多,桩冠稳固,色泽逼真,病人非常满意,特作报道,供同道批评指正。 Our hospital in 1982 encountered a case of left maxillary incisor injury caused by root fracture, broken line is located in the alveolar ridge gums covering the root of the case. If the general rule must be removed according to the residual root, and then inset repair. We break the conventional dare to innovate, to retain the root design covered crest crown repair. Follow-up more than two years, a solid crown, color vivid, the patient is very satisfied with special reports for fellow criticism.