The three dimensional finite element model of the fracture tooth of first premolar was been established by the special software.The gap of the model was been replaced by Clearfil SE Bond.

• 随着粘接材料性能的不断提高和粘接技术的不断更新，粘结再植术治疗后牙纵折，即将患牙拔出、行即刻根管治疗、粘接、再植已成为保存纵折后牙的新方法，并在临床上已取得较为满意的疗效。