Dental activity can be reinforced, but to find the factors of dental activity, according to the specific factors of proper treatment, caused by dental activity of many factors, generally more periodontal disease, apical periapical inflammation, trauma and other factors. 1. Periodontal disease: Periodontal disease is mainly due to inflammation of periodontal tissues caused by bacterial infections, and tooth movement caused by periodontal disease can be improved through effective treatment of periodontal disease. 2. Apical periodontitis: there are acute and chronic apical periodontitis, when it develops to a certain extent, there will be loose teeth, you can improve the apical periodontitis through dental root canal treatment, once the inflammation is under control, the loose teeth will also be solved. 3. Trauma: If the tooth loosening is caused by trauma, you can take anti-inflammatory drugs for minor loosening, and when the inflammation subsides, the tooth can be restored to the fixed, if severe loosening, it should be ligated and fixed to the neighboring teeth, and you can’t use this tooth in the short term. When the discovery of dental activity, to go to the hospital in time to professional dental detailed examination, clear reasons for dental activity, and then symptomatic treatment.