齿根膜的

例句：

1. 1. The dentist advised me tohave my wisdom teeth removed.
   牙医建议我拔掉我的智齿。
2. 2. The patient's toothache wascaused by an abscess inthe root of his tooth.
   患者的牙痛是由他牙齿根部的脓肿引起的。
3. 3. Thedentist performed a root canal treatment onthe patient's tooth.
   牙医为患者牙齿的根部进行了根管治疗。