A rotted tooth can usually be filled, and patients need to take the appropriate steps to do so in their own situation and under the guidance of their doctor. If the patient’s tooth is rotten, it has not caused the bottom to penetrate, and the localized decay can be completely removed, and can leave a hard wall of the tooth. At the same time, the root of the tooth does not show any root fracture, which is consistent with this type of situation, a filling can usually be taken. However, if more than half of the tooth is rotten and the pulp and nerve have been damaged, a direct filling is generally not possible. Root canal treatment should be carried out first, followed by crown restoration. Due to the variability of the patient’s situation, it is impossible to generalize whether a direct filling is possible. It is recommended that patients ask their doctor for guidance based on their situation, and their individual needs. Once a patient has a rotten tooth, he or she should go to a regular hospital in time and actively cooperate with the doctor to take relevant treatment measures. In daily life, you need to keep your mouth clean and clean, brush your teeth and rinse your mouth frequently. Diet, eat more fresh fruits and vegetables, eat less spicy, cold, acidic food.