Wisdom teeth extraction past 10 hours chin and lower lip is not numb may be due to the use of long-acting local anesthetic drugs, the body metabolism is slow, large doses of anesthetic and other reasons, specific as follows. 1. The use of long-acting local anesthetic drugs: ropivacaine’s anesthesia time is long, vascular nerve side effects are low, postoperative analgesic effect is obvious, and its anesthesia time can be up to about 9 hours. 2. Slower body metabolism: the metabolic rate of each body is different, slow metabolism of people may need 10 hours to metabolize the local anesthetic drug is completed. 3. large dose of anesthesia: injecting a large dose of anesthesia, it will take a long time to decompose and metabolize, during which the feeling of anesthesia will continue to exist. Wisdom teeth extraction past 10 hours chin and lower lip is not numb there may be other reasons, if other symptoms, it is recommended to go to the hospital in a timely manner, early treatment.