Depending on the stage of the disease, filling treatment, pulp capping, root canal treatment and crown restoration can be chosen. 1. Filling treatment: If the condition of tooth decay is mild, the decayed material in the decayed tooth can be removed, and then fill the tooth with materials such as glass ionomer or composite resin. 2. Pulp capping treatment: If the decayed upper teeth are close to the nerves, you can choose pulp capping treatment first, using calcium hydroxide to cap the pulp, and then choose the appropriate filling materials to fill the pulp after capping. 3. Root canal treatment and crown restoration: If the decayed tooth on the tooth has led to the exposure of the nerve, it is necessary to kill the nerve, kill the nerve and then carry out root canal treatment, and then finally carry out crown restoration, so as to avoid compression and fracture. After the phenomenon of tooth decay, the patient should go to the hospital in time, so that the professional doctor to assess the condition, and then choose the appropriate treatment program, do not ignore the symptoms, so as not to worsen the condition.