Pulpitis requires dental restoration. Pulpitis, caused by bacterial infection reaching the dental nerve, manifests as severe pain, including sensitivity to hot and cold, nocturnal pain, and diffuse pain that cannot be localized. Typically, pulpitis in one tooth can cause pain in the adjacent upper and lower teeth on the same side, making it difficult to pinpoint the exact tooth responsible. Before performing dental restoration for pulpitis, treatment of the tooth is necessary. This includes removing the infected dental nerve, followed by medication within the root canal and controlling the inflammation. Afterward, the root canal is filled. Thus, root canal treatment is required before dental restoration can proceed in cases of pulpitis.