Clinical study on the treatment for longitudinal odontoschism of posterior tooth employing the intradental circular ligation as supplemental therapy 牙内环形结扎辅助治疗后牙纵裂的临床研究
Objective To improve the treatment for longitudinal odontoschism of posterior tooth employing the fixation therapy. 目的改进后牙纵裂治疗的固定方法。