Pulpitis does not require tooth extraction but necessitates root canal treatment. Pulpitis is a symptom caused by deep dental decay and bacterial infection reaching the dental nerves, manifesting as pain when eating or nocturnal pain. The inflammation in pulpitis is confined within the pulp and does not affect the root apex area. This infection can be resolved through comprehensive root canal treatment. The treatment begins with nerve devitalization; after the nerve is killed, infected dental tissues are removed using a drill, extracting the purulent dental nerve. Subsequently, medication is applied in the root canal. After inflammation is controlled, the root canal is filled. After treatment, the tooth affected by pulpitis can be preserved without extraction.