Why is dental anaesthetic necessary?
为什么需要进行牙科麻醉？
In order to perform dental surgeries safely and successfully, anaesthetic is necessary. It numbs the nerves of the patient’s mouth to ensure that the procedure is painless.
为了安全和成功地进行牙科手术，麻醉剂是必要的。它可以麻痹病人的口腔神经，确保手术无痛。