The preferred treatment is tooth replantation. And the prognosis of replantation of an avulsed tooth is determined by first-aid measures.

解决这一问题的首选方法是脱位牙再植术，而牙再植的预后与脱位牙的急救措施息息相关。

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But the lose of the activity of periodontal ligament cells and root replantation has influenced the successful rate of tooth replantation for a long time.

牙再植术的历史悠久，但是脱位牙根面部分牙周膜细胞活性丧失、牙根吸收，影响着牙再植术的成功率。

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