Due to various reactions and changes in eating habits during pregnancy, the teeth of many mothers-to-be are susceptible to damage, and if they are not protected, there may even be a few broken teeth after the baby is born. It is known that in developed countries, two-thirds of dead babies are caused by premature birth, and 18% of premature babies may be related to the mother’s oral disease. Pregnant women will have endocrine changes in their bodies, which will also cause corresponding periodontal changes, plus the body’s immunity decreases at this time, and if the pregnant women themselves have poor periodontal conditions, it will cause gingivitis during pregnancy, with symptoms such as red, swollen and bleeding gums. This is when pregnant women suffer from toothache and have to go to the dental hospital. However, if the dental treatment requires medication, some antibiotic drugs are used, which are prohibited for pregnant women. In addition, the pain and irritation caused by the treatment may also lead to preterm abortion in pregnant women. Huang Yanjun, Department of Stomatology, Daqing Oilfield General Hospital