The cost of root canal treatment is around $300 to $600 per root canal, and the number of root canals in a tooth is 1 to 4. The exact price is also related to the local economic development level. 1. Anterior teeth usually have a single root canal, premolars usually have 1~2 root canals, and molars usually have 3~4 root canals; the more the number of root canals, the more the charge. 2. Root canal treatment is applicable to the treatment of pulpal inflammation and periapical inflammation, the specific operation includes pulp deactivation, root canal preparation, root canal disinfection, root canal filling. After the root canal treatment, the use of restorative techniques can be used to repair the defects of the dental tissues and restore the aesthetics and functions of the teeth, such as full crown restoration, etc., which requires additional money for crown restoration. For the same disease, the patients’ conditions are different, the choice of treatment is also different, it is recommended to visit the hospital to choose the appropriate treatment.