Women during pregnancy are prone to the following oral problems: 1. Gingivitis during pregnancy. Pregnancy itself does not cause gingivitis and other periodontal diseases, but because of the female after pregnancy, the body’s estrogen, especially the level of progesterone will have a significant increase, resulting in capillary hyperplasia in the gums, increased permeability, the original latent or not serious gingivitis attack, that is, “gingivitis during pregnancy”. At this time, the gums become hyperplastic, swollen, and bleed significantly, and some gums even become tumor-like and bleed easily, which can prevent eating in severe cases. In addition, in case of moderate to severe periodontitis, the probability of pregnant women giving birth to premature and low weight babies is greatly increased. Loose teeth occur due to poor oral hygiene of the mother-to-be. During pregnancy, the mother-to-be suffers from insufficient calcium supplementation, which makes the alveolar bone relatively soft and the periodontal ligament, which connects the teeth to the alveolar bone, slackens. Generally, the bacteria in the mouth of pregnant women are about 2.5 times higher than those of normal people, and the number of their acid-producing bacteria is also two times higher than that of normal people. If the mother-to-be does not pay attention to oral hygiene during pregnancy, inflammation will appear in the gums to the extent that the teeth will become loose. 2. Pregnant women with pregnancy vomiting will increase the acidity of saliva, which will lead to the demineralization of tooth enamel protecting the surface layer of teeth, thus increasing the possibility of caries. During pregnancy, the physiological environment of pregnant women will be greatly changed and their daily life will be irregular, meanwhile, to ensure the normal development of the fetus, the eating habits of pregnant women will also be changed. For example, the frequency and time of eating will increase, as well as partial eating, etc. Together with the negligence of oral care, it will often aggravate the development of dental diseases, such as deepening of caries and turning small caries into big caries. This will not only bring unbearable pain to pregnant women, but also to avoid causing adverse effects to the fetus, the required treatment such as filming, injecting anesthetic, taking medicine and other treatment methods cannot be used normally, which will also make the whole treatment process difficult to carry out smoothly. 3, pregnancy period physical decline, fatigue, or pregnancy reaction is too heavy, so that some pregnant women ignore the maintenance of oral hygiene. 4, most wisdom teeth erupt after the age of 18, wisdom teeth in the process of eruption, often cause acute and chronic disease, that is, “wisdom teeth pericoronitis”. I believe that many people have had the experience of growing wisdom teeth, that is really dumb to taste cypress – bitter taste from home know. But did you know that wisdom teeth (especially those that are not fully grown) are definitely a home base for bacteria? During pregnancy, a pregnant woman’s own resistance is relatively weak and can easily trigger pericoronitis of the wisdom teeth. Wisdom tooth pericoronitis is most likely to occur between the ages of 20-35, which is the age when women of childbearing age choose to become pregnant, so pregnant women are vulnerable to “wisdom tooth” problems. To prevent and treat pericoronitis, the wisdom teeth should be removed from the mouth before pregnancy.