In general, extraction of tooth roots does not hurt, because the doctor will be local anesthesia is divided into surface anesthesia and local infiltration anesthesia, with local anesthetic does not affect the patient’s consciousness, the patient can feel the doctor operating in the mouth, there is a sense of touch but no pain. Special circumstances can cause the effect of anesthesia does not work. For example, if there is inflammation around the tooth, the absorption of anesthesia will be hindered and the effect of anesthesia will be weakened, so when extracting a tooth, try not to choose to do it during the inflammation period. If the tooth is extracted during the inflammation period, it is recommended to wait until the inflammation is eliminated before the tooth extraction treatment is carried out.