Pulpitis is a common oral inflammation encountered clinically, with a relatively high incidence rate. Pulpitis is a disease occurring in the pulp tissue, which is a loose tissue. Inflammation of the pulp can lead to a purulent infection, causing patients to experience gum pain or facial pain that extends to the head. When pulp necrosis occurs, it generally results from the transformation of various causes of pulpitis, all due to a lack of timely treatment of pulpitis. It may also be caused by trauma, restorative materials, or certain chemical materials. It is recommended that patients seek prompt medical attention and undergo treatment such as filling and pulpal drainage for decompression; otherwise, severe clinical symptoms may occur.