In case of nerve pain, the nerve can be killed for treatment, usually choosing to use dry pulp or root canal therapy for later treatment. Dry pulp surgery is the use of dry cadaverized material placed at the mouth of the root canal to promote the evaporation of water from the tooth nerve, which can ensure that most of the nerve is necrotic, preserving the healthy root pulp and also contributing to the stability of the tooth. Root canal treatment is the complete removal of the infectious agent to avoid tooth pain, and usually, a porcelain crown restoration should be done after the root canal treatment. If the toothache is caused by a split tooth, the split tooth should be extracted. If the toothache is caused by a pericoronal abscess of the wisdom tooth, anti-inflammatory treatment is usually required and local irrigation is performed.