Tooth extraction can produce localized neurosensory disorders if the nerve is damaged. If the nasopalatal nerve is injured, it will cause numbness of the palatal mucosa in the anterior region; if the buccal nerve is injured, it will cause numbness and pain in the skin and mucosa of the cheek; if the chin nerve is injured, it will cause numbness and pain in the skin of the chin; if the lingual nerve is injured, it will cause numbness and dullness of sensation in the tongue. If the inferior alveolar nerve is injured, it causes incomplete numbness of the skin of the lower lip and chin, and the ipsilateral mandibular teeth or is accompanied by burning or tingling sensation. Usually the nerve symptoms will be gradually relieved and recovered, and you can take oral medications to promote nerve growth and reduce edema, such as dexamethasone and gold lutefisk. Usually the nerve will recover to varying degrees in about one week to three months.