endodontist

例句：

1. 1.She needed an endodontist to help her with her toothache.
   她需要一位牙科医生来帮助她治疗牙痛。
2. 2. The endodontist performed a root canal treatment on the patient's tooth.
   牙科医生为患者的牙齿进行了根管治疗。
3. 3.I went to the dentist for a check-up and got recommended an endodontist.
   我去牙医那里做了检查，被推荐了一个牙科医生。