tooth midline

例句：

1. 1. The dentist carefully measured the tooth midline to ensure proper alignment.
   牙医小心翼翼地测量了牙齿中线，以确保正确对齐。
2. 2. During the surgery, the surgeon had to align the tooth midline precisely.
   在手术过程中，外科医生必须精确地对齐牙齿中线。
3. 3. The orthodontist used a dental appliance to adjust the tooth midline for better bite correction.
   正畸医生使用一种牙科装置来调整牙齿中线，以进行更好的咬合矫正。