Using salt water to gargle with a toothache does not have any therapeutic effect or pain relief. Toothache should be consulted in the hospital to identify the cause of the disease, symptomatic treatment. The toothache generally has the following possibilities: 1, endodontitis, apical periodontitis, the treatment method is mainly under local anesthesia, root canal treatment of the affected tooth, through effective root canal treatment, can completely remove the root canal and periapical infected material and inflammation, can prevent infection, to eliminate the pain, after the end of the treatment, the tooth will not be again pain. 2, wisdom tooth periapical periodontitis, wisdom tooth periapical periodontitis, the use of saline rinsing is also useless. Rinsing is not useful, wisdom teeth pericoronitis should be systemic anti-inflammatory symptomatic treatment, the local use of hydrogen peroxide and saline alternately rinse the blind pocket, generally about a week wisdom teeth pericoronitis can gradually improve, the teeth can no longer pain, and then should be removed from the wisdom teeth, in order to eliminate the problem. 3, acute periodontal abscess may be, the treatment should be a local abscess incision, to exclude the abscess, systemic anti-inflammatory symptomatic treatment, the treatment should be localized, and then the wisdom teeth will be removed. Generally about a week the pain can disappear, and then should be infected periodontal tissue for basic periodontal treatment.