Tooth pain can be applied salt water gargle, but in most cases the application of salt water gargle does not have a therapeutic effect on tooth pain, only in rare cases of periapical infection of wisdom teeth, the application of salt water gargle may have a certain pain relief effect, but the effect is also very small, because salt water does not achieve the specific antibacterial bactericidal effect. The majority of tooth pain is caused by bacterial infection, which can lead to pulpitis and periapical infection, while bacterial infection of the periodontium can lead to pericoronitis of the wisdom teeth. The best treatment for these diseases is to go to a professional dentist for causal treatment of the disease. For pulpitis and periapical inflammation, a treatment plan of pulp drainage followed by root canal treatment should be carried out. For wisdom tooth pericoronitis, the wisdom tooth should be extracted after rinsing and systemic medication, which is the root solution, while the application of saline rinse is not very effective.