Due to pregnancy reaction, discomfort and local sensitivity of the mouth, mothers-to-be easily relax their self oral health care. Some mothers-to-be get pregnant with dental disease, and during the pregnancy stage, dental disease aggravates and pains, now let’s talk about when to treat. It is better to do good oral health care before preparing for pregnancy, to cure the caries, periodontitis, etc., to pull out the teeth, such as wisdom teeth, to meet the arrival of pregnancy with a healthy mouth during pregnancy, no matter how uncomfortable, but also to insist on good oral hygiene, to prevent gum and tooth lesions. If you have tooth decay or periodontitis, you must have treatment, and the best time to have treatment is in the middle of pregnancy, from 4 to 6 months, which is an extremely safe period. If the treatment is performed in early or late pregnancy, it may lead to miscarriage or premature birth.