Objective: To study the erupt direction and development of the third molars of the adolescents.

前言：目的：研究青少年第三磨牙发育程度及萌出方向。

youdao

Objective: To study the erupt direction and development of the third molars of the adolescents.

前言：目的：研究青少年第三磨牙发育程度及萌出方向。

youdao