If dental treatment is necessary during pregnancy, it is best to agree on a specific schedule with your dentist at the beginning of your pregnancy. A responsible dentist will be able to organize a treatment plan that takes into account the condition of the pregnant woman and her general condition. Generally speaking, the most appropriate time for a pregnant woman to be treated for oral diseases is between the fourth and sixth month of pregnancy. Treatment during the first trimester of pregnancy can induce miscarriage, and many pregnant women suffer from vomiting, nervousness and anxiety. If dental treatment is necessary during this period, the dentist should try to minimize the physical and mental stress on the pregnant woman to avoid irritation that may cause vomiting or even induce a miscarriage. During the last trimester of pregnancy, pregnant women with large stomachs may feel uncomfortable when receiving treatment in the dental chair. Especially pregnant women with a history of preterm labor, it is best to avoid dental treatment during the last few months to avoid inducing miscarriage. Therefore, it is best for pregnant women to have their dental appointments in the middle trimester of their pregnancy. Dental x-rays are an important tool for dentists to diagnose dental caries and other dental diseases, but x-rays should generally be avoided during pregnancy. If it is necessary for a pregnant woman to have dental x-rays taken, the following conditions must be ensured: (1) The amount of x-ray projection should be as small as possible. (2) The beam of the x-ray should be narrow enough to avoid shining directly on the abdomen of the pregnant woman. (3) The abdomen can be covered with an apron containing lead to protect the fetus. Some medicines and anesthetics that have no side effects on the pregnant woman and the fetus are allowed during and after dental treatment. Pregnant women should tell their dentist what medications they are currently taking in order to avoid adverse interactions between medications. It is important to note that only the dose prescribed by the doctor should be taken. Most importantly, you should not take any medication for a toothache, as this can have a negative effect on your oral and general health and that of the fetus. The consequences for the fetus may be lifelong. Therefore, what kind of medicine to take and how much to take must be according to the doctor’s prescription.