Salt water for toothache is not an effective treatment for toothache, and if you rely solely on salt water without treatment, you will not be able to relieve the toothache situation no matter how long you hold it. Toothache can be caused by caries, pulpitis, periodontal disease and other reasons. Toothaches can occur when teeth are irritated by hot or cold stimuli, deep cavities with embedded food, inflammation of the gums due to pulpitis, and periodontal abscesses due to the spread of periodontal disease. Toothache can be treated according to the cause of the toothache. Such as caries removal of decay, filling treatment, pulpitis can be root canal treatment, periodontal disease can be cleaned through the periodontal, incision and drainage of pus, with anti-inflammatory drugs treatment. It is recommended that patients with toothache consult a doctor in a timely manner to avoid delaying the treatment of the disease by using saline solution on their own.