Dental CT generally does not cause a lot of harm to the body, and most one-time checkups do not affect the body; CT for pregnant women may lead to fetal malformations. However, doing it too many times for a short period of time may lead to cell mutation and increase the risk of tumor development. The dose of dental CT radiation is very small, within the safety range, is acceptable to the human body, generally does not affect human health, so do not worry. However, pregnant women or women in the period of preparation for pregnancy should try not to undergo CT examination, to avoid the increased risk of fetal malformation after receiving radiation. Of course, if you find out that you are pregnant after undergoing a CT examination without your knowledge, there is no need to terminate the pregnancy, and you can attend regular checkups, and if there is no abnormality, you can continue the pregnancy. There is also the need for the area to be well protected if there is a thyroid related condition. If the ct examination is performed several times in a short period of time, the amount of X-rays entering the body increases significantly, which may cause some harm to the body, mainly because it may hinder the growth of cells, leading to cell mutation and increasing the risk of tumor development.