Swelling and pain of pregnant teeth may be caused by gingivitis, wisdom tooth pericoronitis, etc. According to the situation, we can choose local rinsing and medicine, medication, tooth extraction and other treatment measures. 1. Local rinsing and medication: swollen pregnant teeth may be caused by gingivitis due to changes in hormone levels in the body after pregnancy, you can use 3% hydrogen peroxide solution and saline to rinse the gums repeatedly, and then apply iodized glycerin to the gums, while rinsing with chlorhexidine gargle solution. 2. Medication: In addition to local rinsing and medication, you can also take oral penicillin drugs, such as amoxicillin capsules, which have less impact on the fetus. 3. tooth extraction: wisdom tooth pericoronitis caused by tooth swelling pain, if the wisdom tooth recurrent inflammation can be in mid-pregnancy, that is, 4 to 6 months pregnant to the regular hospital to wisdom tooth extraction is safer. During pregnancy, you should not blindly use your own medication, go to the hospital in a timely manner, under the advice of a professional physician to choose the best treatment plan, so as not to affect the development of the fetus.