The more severe toothache at night is a typical symptom of pulpitis, for the following reasons: First, during the day when work or study is busy, there is no time to take care of tooth pain, and at night there are no other things to distract you from the toothache will feel particularly obvious. Second, because of the lying position at night when sleeping, the blood and circulation of the head accelerates leading to the pressure of the inflamed tooth pulp will gradually become larger, so the feeling of toothache will be more intense. The best way is to go to the hospital for root canal treatment, where the infected pulp is removed and the root canal is filled with special materials to make the root canal sterile for a long time, and then a filling or porcelain crown can be chosen to repair the tooth according to the actual situation. Pulpitis does not heal on its own. In addition to the pain that is more obvious at night, the pain will also increase after cold or hot stimulation, so it is recommended to go to the hospital as soon as possible.