Toothache may be caused by dental caries, pulpitis, apical periodontitis, etc. Medication and surgical treatment can be chosen according to the specific cause. 1. Dental caries: Early dental caries will not cause toothache, with the aggravation of dental caries, the cavity becomes bigger and gradually close to the pulp, affecting the pulp nerve, there will be symptoms of irritating toothache. Corrosion can be removed, and then resin filling. 2. Pulpitis: If spontaneous, paroxysmal recurrent toothache occurs, and the pain tends to flare up at night, and the pain cannot be localized by itself, consider pulpitis. Root canal treatment is commonly used to remove the infected material from the root canal, relieve pain, sterilize the root canal, and then perform root canal filling. 3. Periapical inflammation: When the pulpitis is gradually serious, in addition to the toothache, it also shows the floating feeling of the teeth, especially when the pain is obvious when biting, then consider the periapical inflammation. Root canal treatment is commonly used to remove the infection from the root canal and then fill the root. It is recommended to go to the hospital to find out the exact cause of tooth pain and not to use medication on your own, but to treat the symptoms under the guidance of a doctor.