The price of redoing root canal under microscope ranges from about 1000~5000 RMB, which is related to the treatment item, tooth location, treatment organization and so on. 1. Related to the treatment program: redoing the different treatment programs, the charges are different. If the previous root canal filling is not perfect, when redoing, you need to clean up the filling, do a good job of disinfection, and then fill it again after the inflammation subsides; if the previous root canal filling is too much, when redoing, you need to clean up the excess part, and then re-treat it after the inflammation subsides; if the previous root canal side penetration occurs, when redoing, you need to control inflammation in the side penetration area. 2. Related to the part of the tooth: the tooth to be redone contains different number of root canals, and the charges are different. For example, anterior teeth contain 1 root canal, premolar teeth contain 2 root canals, and large teeth contain 3~4 root canals. Different teeth need to be re-treated, the number of root canals varies, and the total cost of treatment will be different. 3. Related to the treatment organization: The root canal treatment under microscope is mostly carried out on the basis of the failure or imperfection of the previous root canal treatment, which is relatively more difficult and requires a higher level of skill for the practitioner. High-grade dental institutions have more advanced dental equipment and experienced practitioners, and their charges are higher than those of low-grade hospitals. After the microscopic redo root canal treatment, you need to follow the physician’s instructions, take medication on time, and maintain oral hygiene to prevent infection.