maxillary ring

例句：

1. 1. The dentist removed the maxillary ring to repair the tooth.
   牙医移除了上颌环以修复牙齿。
2. 2.During the surgery, the surgeon made a small incision in the maxillary ring.
   手术期间，外科医生在上颌环上做了一个小切口。
3. 3.The patient needed a maxillary ring replacement due to an injury.
   由于受伤，患者需要更换上颌环。