oral anesthetics

例句：

1. 1. The dentist used a localanesthetic to numb the areabefore the procedure.
   牙医在手术前使用了局部麻醉药来麻木该区域。
2. 2.The patient was given a sedative to help him relax during the procedure.
   患者被给予镇静剂，以帮助他在手术过程中放松。
3. 3. Oral anesthetics are commonly used for pain reliefduring dental procedures.
   口腔麻醉剂常用于牙科手术期间的疼痛缓解。