Vertical cracking of the tooth to the root or pulp chamber bottom, cracked into two identical parts is of little significance, it is best to extract the tooth. 1. Oblique cracking of the tooth only to the edge of the gums, without reaching the pulp chamber: the cracked tooth tissue is removed and then filled and repaired, and then restored to the shape of the tooth by crown restoration. 2. Vertical cracking of the tooth to reach the pulp chamber: in this case, first root canal treatment of the tooth, observation for two weeks if the tooth does not appear pain, and then crown restoration to restore the chewing function of the tooth. After the tooth is cracked, go to the hospital in time to take apical dental radiographs, according to the apical radiographs to determine the degree of cracked teeth, and then choose further treatment options, in order to facilitate the recovery.