Salt and white vinegar for toothache is not true, this practice has no scientific basis. 1. The causes of toothache are complex, including pericoronitis, gingival papillitis, caries, endodontitis, periapical periodontitis, and many other oral diseases. According to the specific causes of different treatments, peri-coronitis may require rinsing and local medication, gingival papillitis requires local rinsing and anti-inflammatory, caries needs to be filled, pulpitis or periapical periodontitis requires root canal treatment. 2. Salt and white vinegar can not cure toothache, this practice has no scientific basis. If there is toothache, it is recommended to go to the hospital stomatology department as soon as possible, do not blindly try folk remedies, under the guidance of the doctor for targeted treatment.