Children’s teeth are black and rotten considering caries, for children’s caries has been black and rotten treatment is mainly to terminate the lesion, maintain the basic function of the teeth, you can take drugs, fillings, root canal treatment, extraction and other means of treatment: a common means of treatment: 1, medication: such as fluoride-containing drugs to inhibit the generation of caries-causing bacteria, commonly used fluoride-containing drugs have glycerol paste of sodium fluoride, tin, silver ammonium fluoride, etc. During treatment, you can first clean the caries place and then apply it to the affected area; 2, fillings: if only the crown is rotten, and there is no damage to the root of the teeth, and apply it to the affected area. Tin, silver ammonium fluoride, etc., in the treatment of caries can be cleaned first, and then applied to the affected area; 2, fillings: if only the crown rotted off, and did not damage the root, and no pain, can be taken to fill the tooth treatment; 3, root canal treatment: if the child’s teeth blackened and rotted off only part of the crown, after taking pictures and found that the root of the tooth is still intact, you can consider removing the caries of the bad tissue first, with the endodontics drilling to expand into a reasonable cavity form, and then use material to fill the cavity. The cavity will be filled with material or installed with crown to help restore the basic function of the tooth. 4. Extraction: If the blackened and rotten part of the child’s tooth is large and the root is found to be necrotic in the radiographs, accompanied by odor, pus flow, toothache and other symptoms that are hard to bear, then the tooth can be considered to be extracted. After extraction, the doctor can consider whether to keep the tooth space according to the child’s age, the location of caries, etc., which will help the operation of dental implant in the later stage. Second, precautions: 1, oral hygiene: usually develop good habits, rinse your mouth after eating, brush your teeth early in the morning and before going to bed, do regular oral examination, you can also use fluoride toothpaste, because fluoride has the function of anti-caries; 2, eating habits: usually pay attention to eating habits, try not to eat before going to bed, usually eat less sweets, you can add fluoride-containing foods in moderation, such as milk, eggs, sardines and so on, there is a certain caries preventive effect. Role.