During the treatment process of pulpitis root canal, there will be some pain. Pulpitis is caused by bacterial infection that leads to inflammation of the dental nerve, and the pain is very intense. First, the ocular nerve should be treated, and pulp extraction can be performed under local anesthesia. During this stage, if anesthetic is administered, the pain will not be so apparent. If no local anesthesia is applied, it is still possible to proceed directly with opening the pulp chamber, but there will be intense pain at the moment of opening. After opening the pulp chamber, the pressure is relieved, and the pain symptoms of pulpitis often can be alleviated. Additionally, medication can be sealed into the root canal, and after controlling the inflammation, the root canal can be filled. During the process of sealing medication and filling the root canal, stimulation of the root apex area may cause discomfort in that area.