A hole in the tooth is medically called caries. Commonly used treatments include medication and filling. 1. Dental caries, also known as dental caries, is a bacterial disease, can be secondary to pulpitis and periapical periodontitis, and can even cause inflammation of the alveolar bone and jawbone, if the treatment is not timely, cavities may form, and ultimately lead to the crown of the tooth is completely destroyed, the teeth fall out. 2. Drug treatment: Before drug treatment, the carious surface needs to be removed, and then the surface is coated with drugs to protect the tooth surface, which is mainly applicable to the shallow caries of the permanent teeth that have not yet formed holes, and the shallow or medium carious holes of the anterior teeth of the breast. Commonly used drugs include silver nitrate and sodium fluoride. 3. Filling: For teeth that have formed substantial defects, filling is currently the most widely used and effective method. Firstly, remove the carious part of the tooth, fill the material according to the size of the carious cavity, and then fix the filling material to facilitate the restoration of the ability to chew, but also to prevent the continuation of dental caries. To prevent the formation of caries, it is recommended that patients develop good oral hygiene habits, so that morning and evening brushing, rinsing after meals, less acidic stimulating foods, less sugary foods, do not eat snacks before going to bed. After the formation of dental caries, it is recommended that patients seek medical treatment in a timely manner to avoid further progression of the disease, and the use of medication should be in accordance with the doctor’s instructions.