Pulpitis is not swollen but painful. Oral pain medication can usually be used to relieve the pain, but root canal treatment is required. 1. Infection and caries are the most common factors leading to pulpitis. Patients usually have symptoms of toothache, aggravation at night, and worsening pain with temperature stimulation. When the pulpitis is not swollen but painful, oral painkillers such as ibuprofen can be taken to temporarily relieve the pain, but this approach does not have a curative effect. 2. Endodontitis is not swollen but very painful, it is recommended to use root canal treatment to let the inflammatory exudate out of the pulp cavity, and remove the infected pulp in the root canal, and then carry out a tight filling, the pain can be significantly relieved or disappear. All of the above medications should be used under the guidance of a doctor, to avoid self-medication, if the symptoms of endodontic inflammation are not swollen but very painful or have not been improved, it is recommended to go to the hospital in time for treatment.