The price of root canal treatment for endodontitis is usually around $300 to $5,000 per root canal, as the number of root canals in a tooth may range from 1 to 4, so there is a variation in the exact cost of root canal treatment. Pulpitis is an inflammatory lesion of the pulp tissue that has little chance of returning to normal, and if left untreated may develop into periapical periodontitis, which ultimately leads to tooth loss. Therefore, root canal treatment should be performed as early as possible at the onset of pulpitis in order to preserve the natural tooth. The procedure of root canal treatment is to open the pulp under local anesthesia, clean and shape the root canal, disinfect and sterilize the root canal with medication, and finally fill the root canal tightly with root canal filling material. It is recommended to go to the hospital to receive regular treatment.