buccal groove

例句：

1. 1.This tooth has a buccal groove that is easy to clean.
   这颗牙齿有一个容易清洁的牙槽沟。
2. 2.The dentist needs to make a buccal groove in the molar to fit the crown.
   牙医需要在磨牙上做一个牙槽沟来适配冠。
3. 3. The patient had a buccal groove made for his upper front teeth.
   患者为他上颌前牙做了一个牙槽沟。