All cases were observed over 5 year follow up study after all fractured molars were restored with metal crowns after the endodontical treatments (112 cases, 121 teeth),Nice clinical results were 87.6%.

• 采用根管治疗后冠用金属全冠修复法治疗磨牙完全折裂 ；共计 112例 ；12 1颗患牙 ；对牙折在一周内 ；根分叉没有明显炎症病例 ；在短期内进行有效的治疗 ；随访 5年以上 ；取得了满意的疗效 ；优 6 4 .；5%25；良 2 3