In the middle of pregnancy can be treated dental, that is, the 4th-6th months of pregnancy, because pregnancy is a relatively special time period, any treatment measures may affect the fetus and pregnant women, and even life-threatening, so to specific analysis, some can not be treated, some can, as follows: 1, can not be treated dental: so generally in the clinical, if the early pregnancy If the fetus is unstable at this time, dental treatment for pregnant women is likely to cause miscarriage of the fetus. If in the late pregnancy, that is, the 7th-9th month of pregnancy, the fetus has basically formed, and the weeks are very large, the treatment of pregnant women is likely to cause premature birth of the fetus. 2, can treat teeth: only in the middle of pregnancy, that is, the 4th-6th month of pregnancy, when the fetus is more stable, treatment of teeth is relatively safe.