If the tooth is a wisdom tooth, no further treatment is needed. If it is a second molar, implant restoration is recommended after extraction. If the tooth is a wisdom tooth or a second molar, the decayed tooth is usually worthless and needs to be extracted. If the decayed tooth is a wisdom tooth, there is no need for special treatment after extraction, just wait for the extraction socket to recover. If it is the second molar, if it is not restored after extraction, the opposite jaw teeth will elongate, so it is recommended to restore the treatment after 3 months, because the second molar belongs to the end of the missing teeth, the best solution is implant restoration. It is recommended to go to the stomatology department of the regular hospital, after the examination by the physician, according to the condition of clear diagnosis, and then according to the oral conditions, choose the appropriate treatment program.