Usually chronic pulpitis has no obvious pain and is easily ignored by parents and children. However, if chronic pulpitis develops into acute pulpitis, there will be severe nighttime pain and sometimes facial swelling, which can have a serious impact on the life of children. If chronic pulpitis is left untreated for a long time, it will gradually develop into periapical periodontitis. If periapical periodontitis is not treated in time and the inflammation continues to develop, it will affect the permanent teeth in the direction of the roots of the teeth. If the permanent teeth are affected, their form, color and position may be affected. In case of facial swelling, dental treatment should be carried out first and then correspond to anti-inflammatory treatment. If chronic inflammation develops into periapical inflammation, the initial treatment may be root canal therapy, or if the permanent tooth has been affected, the affected tooth will need to be extracted.