Numbness of mouth and lips during tooth extraction is a symptom of anesthesia for tooth extraction. The recovery time of oral numbness after tooth extraction is as follows: 1, most patients with oral numbness after tooth extraction can be gradually disappeared in 2-4 hours; 2, if the numbness is caused by the damage to the nearby nerves in the extraction process, it will take about 3 months to recover on its own, a small number of patients due to the damage is more serious, it can lead to lifelong residual mild numbness of the lips but with the prolonged period of time, the patient is gradually accustomed to the patient, it will not feel very uncomfortable. Some patients are more sensitive and may experience discomfort for a long time.