Preparation for pregnancy to check the teeth is because oral disease occurs after pregnancy, medication will cause adverse effects on the fetus, the discovery of dental and oral diseases during pregnancy timely treatment. After pregnancy, women’s body hormone levels increase, will occur in the oral environment changes, which is mainly due to early pregnancy vomiting caused by increased stomach acid, pregnant women’s diet changes, which causes changes in the oral environment, prone to gums and oral diseases. However, women should not use drugs during pregnancy, or it may affect the fetus. In addition, if dental disease occurs during pregnancy, it can cause oral infections and bacteria enter the bloodstream, which can also adversely affect the fetus. Therefore, it is necessary to have a good dental checkup before pregnancy, and if you find any dental lesions, you need to treat them in time, and you can only get pregnant when your teeth are normal.