Pulpitis needs to be diagnosed by taking an X-ray. For teeth with defects and caries, the X-ray will show that the caries has already injured the nerve or is very close to the nerve, but the bacteria has already attacked the pulp, and when combined with the patient’s own symptoms, such as nocturnal pain and spontaneous pain, the doctor will be able to determine that the patient is suffering from pulpitis. Once suffering from pulpitis, the first choice is to carry out root canal treatment, the pulp cavity will be opened, the pulp will be extracted cleanly, the infection of the pulp is not shaped through the root canal preparation, it will be taken out all the way, and then filled with hot glue, filled with a good pulp cavity can only be restored inlays or porcelain crowns, such teeth are not recommended to fill the caries cavity, may lead to the fracture of the tooth.