obturator groove

例句：

1. 1.The surgeon used a special instrument to create an obturator groove in the patient's tooth.
   外科医生使用一种特殊的工具在病人的牙齿上创造了一个插管沟。
2. 2.During the operation, the doctor carefully placed the obturator groove into the patient's mouth.
   手术过程中，医生小心翼翼地将插管沟放入病人的口中。
3. 3. The obturator groove is designed to prevent food particles from entering the airway during sleep.
   插管沟的设计是为了在睡眠时防止食物颗粒进入呼吸道。