Root canal treatment is a treatment used to repair and save a severely decayed or infected tooth. During the root canal treatment process, the nerve and tooth pulp (pulp) are removed, the inner part of the tooth is cleaned and filled. Today, with the innovations in root canal treatment, the life of the tooth is significantly extended. The procedure performed under local anesthesia can be completed in a single session, or it can take multiple sessions. This situation varies according to the condition of the tooth.