Toothache may be caused by caries, pulpitis, wisdom teeth inflammation, etc., usually do not need to be directly extracted. 1. Dental caries: may be due to bacterial infection and other factors leading to the destruction of dental tissue resulting in toothache, in eating sweet ice stimulating food, will cause a transient pain, in this case only need to remove the decayed tissue, and then filling can be, is not directly extracted. 2. Pulpitis: It refers to the toothache caused by inflammatory lesions in the pulp of the tooth, mainly characterized by spontaneous pain, pain at night, which may be aggravated by stimulation with cold or hot water, and the tooth can be preserved through root canal treatment, and generally does not need to be extracted directly. 3. Wisdom teeth inflammation: when the wisdom teeth produce inflammation will be a toothache, usually localized swelling and pain, may lead to cheek swelling and pain, serious cases will lead to difficulties in opening the mouth, the need for anti-infective treatment as an aid to comply with the medical advice to take metronidazole, roxithromycin, etc., and so on, the inflammation can be extracted after the subsidence. Toothache should immediately consult a dentist under the examination to clarify the cause of the disease, to standardize the treatment, and consider whether it can be directly extracted, at the same time, pay attention to oral hygiene, more mouth rinsing.