Not long ago, one day, covering the painful face of Miss Huang in the company of her husband to the hospital. It turns out that Huang has been pregnant for two months, three days ago a toothache, because of fear of medication caused by fetal malformations, hard to hold on to no treatment, did not expect the face soon swollen up, the mouth is also difficult to open wide, really suffering! After the doctor’s examination, Miss Huang is a tooth decay caused by a jaw and facial infection, the doctor told Miss Huang, the first trimester of pregnancy is an important stage of fetal organ development and molding, complex oral treatment may lead to miscarriage, for the safety of the fetus, the temporary can only drill open teeth local medicine, and choose safe antibiotics to control the infection, to completely treat, you need to wait until 4-6 months of pregnancy The tooth decay will be a “time bomb” that will be detonated at any time during pregnancy. Many married mothers-to-be will consciously go to the hospital’s internal medicine and obstetrics and gynecology departments to do relevant physical examinations and laboratory tests before planning pregnancy to ensure that their bodies are in the best condition before conception, but often neglect the oral examination. The physiological changes of pregnancy and the preference for sweet and sour foods during pregnancy, as well as the negligence of oral hygiene during pregnancy, often accelerate the destruction of the original tooth decay, once it evolves into acute pulpitis or periapical inflammation, will not only bring unbearable pain to themselves, and careless medication will also cause adverse effects on the fetus. After pregnancy, due to the obvious rise in the level of estrogen in the body, it is easy to induce or aggravate gingivitis, resulting in gum enlargement, swelling and bleeding, and should be routinely cleaned before pregnancy. Tooth extraction is generally not recommended during pregnancy, especially for pregnant women with a history of habitual miscarriage and premature birth. In the first and second trimesters of pregnancy, tooth extraction may cause miscarriage and premature delivery. The relatively safe period for tooth extraction is between April and June of pregnancy, but the possibility of tooth extraction should be determined according to the comprehensive situation of the dentist, obstetrician and the pregnant woman; therefore, for the residual roots and obstructed wisdom teeth that cannot be retained, they should be prophylactically extracted before pregnancy to avoid acute inflammation that may affect the safety of the fetus during pregnancy. Here to remind those married mothers-to-be, do not neglect the pre-pregnancy examination of the oral cavity. To ensure the health of the teeth is also a prerequisite to ensure a safe pregnancy.