Pulpotomy does not hurt because local anesthesia is administered prior to pulpotomy treatment. Local infiltration anesthesia is mainly a small mound injected into the mucosa of the root of the tooth, and the anesthetic gradually spreads and penetrates inside the pulp, eliminating the pain of the nerve completely. Therefore, the step of pulp opening is completely painless during the treatment of pulpitis. Once the pulp cavity is opened and the pressure is released medication to deactivate the nerve is placed in the pulp cavity or the infected pulp is removed directly, which is also completely painless. Currently, oral anesthesia technology is so advanced that root canal treatment, tooth extraction, or suturing of internal and external oral injuries are performed in a completely painless manner, and patients do not have to worry about pain during root canal treatment. Even if there is pain, it is a slight swelling and discomfort in the apical area after the root canal treatment, which usually disappears within 1-2 weeks after the root canal treatment.