Root canal treatment is charged according to the number of root canals. The cost of one root canal treatment is about 300-400 RMB, the cost of single canal anterior root canal treatment is 300-400 RMB, and the cost of multiple canal posterior root canal treatment is about 1000 RMB. Root canal treatment is a routine treatment for pulpitis and periapical periodontitis. The current clinical endodontic treatment is all modern endodontic techniques, i.e., the use of nickel-titanium mechanical preparation of the root canal and the filling of the root canal with hot dental cement. Root canal treatment is divided into three steps: 1) removal of tooth decay, opening the pulp cavity, and sealing the pulp inactivator in the pulp cavity; 2) evacuation, cleaning the infected bone in the root canal, and root canal shaping and drug disinfection; 3) tight filling of the root canal with dental cement tips and hot dental cement, and the tooth needs resin filling or porcelain crown or all-porcelain crown restoration after root canal treatment, the doctor will recommend the restoration with porcelain crown to protect the remaining tooth tissue.