Tooth acid needs to be solved according to the specific causes, such as tooth sensitivity, caries, periodontitis, etc. After diagnosis, choose general treatment, filling treatment, medication, scaling treatment and so on. 1. Tooth sensitivity: If the patient’s teeth are more sensitive, it can cause tooth acid. Treatment can choose anti-allergic toothpaste to improve the phenomenon of allergy. 2. Dental caries: dental caries can also lead to the phenomenon of acidic teeth, the treatment needs to caries in which the decayed material tissue, and then choose the appropriate material to fill the cavity, so as to improve the phenomenon of acidic teeth. 3. Periodontitis: periodontitis can also lead to the phenomenon of tooth soreness, treatment can choose scaling treatment, through the ultrasonic to carry out gingival scaling, subgingival scraping, with medication, such as metronidazole, amoxicillin and so on. There are many reasons for dental acid, daily need to do a good job of dental care, avoid contact with sensitive substances, and need to go to the hospital as soon as possible, follow the doctor’s instructions to take standardized treatment or the use of medication, not private treatment, so as not to lead to adverse consequences.