maxillary dental arc

• 上颌牙弓

maxillary dental arc的用法和样例：

例句

1. Palatal expansion is frequently applied in correction of maxillary transverse deficiency and upper dental arch constriction.
   腭扩展是正畸常用的矫治上颌横向发育不足及上颌牙弓狭窄的固定矫治技术。