Local anesthesia is used for tooth extraction, usually the doctor will choose different anesthesia drugs according to the condition of the patient’s teeth, commonly used drugs are procaine, lidocaine and bupivacaine. 1. Procaine, the anesthesia maintenance time is shorter, usually in about 1 hour, more commonly used in the extraction of teeth that have been loosened. 2. Lidocaine, anesthesia lasts longer, usually about 2 to 3 hours, and is usually used to extract wisdom teeth and other teeth that are more difficult to extract. 3. Bupivacaine, a long-acting local anesthetic, is usually used for more sensitive patients or for extractions that cause more damage to the teeth. What kind of anesthesia is used for tooth extraction, it is recommended to refer to the local hospital, different hospitals and different doctors commonly use different anesthesia drugs, the above drugs are only a few commonly used anesthesia drugs used for tooth extraction.