The total permissible radiation dose during pregnancy, according to the American Academy of Family Physicians is 5 rad or 0,05 mSv
Therefore you will need 50,000 x-rays to reach the 5 rad, as cumulative dose to the fetus
Digital radiography low dose of radiation and is not expected that there will be some damage to the fetus
In any case, the agreement between dentist is needed, gynecologist and patient for the final decision
always in accordance with the instructions of the gynecologist, the dental radiograph is contraindicated during the first trimester of pregnancy