Endodontitis in pregnant women can be treated with a root canal during the 4th-6th month of pregnancy. Pulpitis refers to the inflammation that occurs in the pulp tissue and can be categorized into two types: acute pulpitis and chronic pulpitis, which is a common cause of toothache. Pregnant women who have chronic pulpitis can leave it untreated when there are no symptoms of severe pain and have it treated after delivery. In the case of acute pulpitis, you need to go to a regular general hospital dentistry department for treatment. Root canal treatment can be performed during the 4th-6th month of pregnancy, when the placental barrier has been formed to protect the fetus. During pregnancy, in order to prevent the occurrence of pulpitis, the key is to do pay attention to oral hygiene, adhere to the daily morning and evening brushing or after meals, brushing, rinsing, removing food debris, to reduce the chances of infection.