It is best not to take dental radiographs during the preparation period, and it is generally recommended that pregnancy should not start until 1-3 months after the dental radiographs are taken, because dental radiographs, also known as X-rays, have certain effects on the human body. Therefore, for safety reasons, it is best not to take dental films during pregnancy preparation. If a patient who has already had dental radiographs wants to become pregnant, it is generally recommended to wait 1-3 months after the radiographs before becoming pregnant.