Inflammatory lesions of the pulp tissue are classified as non-infectious inflammation and infectious inflammation. Restoration of minor injuries in case of non-infectious inflammation, dental contusions, and dental trauma is generally good. Even freshly exposed pulp can be restored with regular clinical treatment. When the pulp is inflamed due to infection, it is generally not restorable for regeneration and only through regular root canal treatment can the inflammation be controlled and the tooth tissue defect be repaired. Treatment of pulpitis requires an oral surgeon to perform root canal treatment, which includes removing the infected pulp and contaminated root canal wall, flushing and disinfecting the root canal, sealing the root canal and repairing the tooth defect, etc., to control the infection of the pulp, prevent the recurrence of root canal infection, and restore the tooth tissue form and function. The teeth after root canal treatment usually require crown restoration because of the large amount of tooth tissue loss. If pulpitis is not treated in time, the infection of the pulp will further spread to the alveolar bone in the apical region, causing periapical infection and even apical abscess.