dental ridge

例句：

1. 1.The dental ridges on the molar teeth are important for chewing.
   牙齿上的牙脊对于咀嚼非常重要。
2. 2. The dentist examined the patient's dental ridges and found no signs of decay.
   牙医检查了患者的牙脊，没有发现蛀牙的迹象。
3. 3. The child had a dental ridge removed during the surgery.
   在手术中，这个孩子被移除了一个牙脊。