dental chisel

例句：

1. 1. Heused a dental chisel to remove theold fillings from his teeth.
   他用牙科凿子把旧填充物从他的牙齿上取了下来。
2. 2. The dentistneeded a dental chiselto make the new crown fitperfectly.
   牙医需要一把牙科凿子来使新的冠冕完美地适应。
3. 3. The patient was given a dental chisel to clean his teeth before the procedure.
   患者在手术前被给了一把牙科凿子来清洁他的牙齿。