Rinsing your mouth with salt water doesn’t work when you have tooth pain. The cause of tooth pain is mainly due to the occurrence of dental diseases, such as caries, pulpitis, apical periodontitis, jawbone tumors and so on. Salt water itself has only a slight disinfecting effect, does not kill bacteria, for dental caries, pulpitis, apical periodontitis and other dental diseases, the pulp does not have any therapeutic effect, so it will not play the effect of pain relief. It is generally recommended to go to the hospital as soon as possible when the tooth pain, if the occurrence of caries filling treatment, if it is pulpitis or periapical periodontitis root canal treatment, if there is a tumor in the jawbone and other diseases need to be surgically removed. Only after the dental disease that causes the toothache is treated can the toothache disappear completely.