Root canal treatment is required when the tooth has progressed to pulpitis or periapical inflammation. The steps of root canal treatment are divided into the following: i. Local or block anesthesia is to be administered, which can be done by utilizing atticaine or 2% lidocaine. Second, the pulp is opened or extracted and, at the same time, a pulp inactivator can be used. The root canal is prepared and then flushed and the pulp chamber is disinfected. Root canal filling, after the root canal preparation, can be filled with hot cement. V. Crown closure, when the root canal filling is finished, the root canal mouth should be closed, and then crown closure and filling treatment should be performed. Sixth, the full crown restoration or inlay restoration, so that is the complete dental treatment, after doing this series of treatment, to ensure the longevity of the use of teeth.