The face numbness after wisdom tooth extraction may be recovered in 2-4 hours or 3-6 months, as follows: 1. 2-4 hours to recover: probably because of the anesthetic drug, there will be numbness in the anesthetized area, and the numbness will disappear after the anesthetic drug is completely metabolized. Usually, the anesthetic drug can last for about 2-4 hours, so when this time has passed, basically the facial numbness will be restored. 2. 3-6 months to recover: Because the root of the wisdom tooth is closer to the mandibular nerve canal, it is possible that the mandibular nerve will be damaged when the wisdom tooth is removed, resulting in numbness in the teeth and mucosa of the jaw. This situation depends on the recovery of the nerve, because there is nerve damage, the nerve needs to be repaired slowly, and the length of the repair time varies from person to person, and is different for each person, generally 3-6 months will gradually recover.