Frequent toothache to check whether the teeth are caries, pulpitis, periapical periodontitis, may also be trigeminal neuralgia or cardiogenic pain caused by the specific need to go to the hospital to do oral and general examination. 1.odontogenic pain: frequent toothache may be teeth caries, poor oral hygiene dental caries, oral examination can be found in the teeth cavities, not through the pulp cavity to remove the decay of the tooth tissue, resin can be filled directly. If the penetration of the pulp cavity caused by pulpitis, apical periodontitis, the need for root canal treatment. 2. Trigeminal neuralgia: Trigeminal neuralgia can also cause toothache, easily confused with pulpitis, manifested as, cut-like tear-like severe pain, but after a few seconds, the pain can immediately disappear, usually trigger point stimulation of pain episodes. 3. Cardiogenic toothache: often occurs after strenuous exercise, toothache can be accompanied by radiating pain, can be seen in cardiovascular disease, such as heart attack. Frequent toothache is recommended to the hospital in a timely manner to check the cause of the problem, found that the problem of timely treatment.