Pulpitis is also an inflammatory reaction occurring in the pulp tissue, caused by the further infection of bacteria when tooth decay is not timely halted, and it represents the natural conclusion of tooth decay. The dental tissues are divided into enamel, dentin, cementum, and pulp tissue, with the pulp tissue located on the innermost side, which is commonly referred to as the dental nerve. If the bacterial infection is not promptly halted in the early stages within the hard tissues of the tooth, that is, if the tooth is not filled in time, the bacteria then further infect the innermost pulp tissue, causing inflammation of the pulp tissue, which is clinically referred to as pulpitis. Pulpitis involves severe pain, necessitating prompt root canal treatment for the tooth.