Objective: To evaluate the clinical efficacy of immediate implantation in the traumatically area.

目的：评价外伤后前牙即刻种植的临床效果。

Objective: To evaluate the effectiveness of the segmental arch technique in fixing replanted traumatically avulsed permanent teeth.

目的：评价正畸片段弓技术应用于固定外伤脱位再植牙的效果。