I can tell you about my personal experience. My dentist wouldn't do anything beyond a visual check in the first trimester. In the second trimester they did a partial procedure where they drilled out about 2/3 of what they needed to do with only a couple of x-rays and then at 8 months they did the full procedure. Make sure the dentist you choose uses digital x-rays and loads you up with lead aprons. A root canal needs around a dozen x-rays so the digital ones are important because the exposure is less, the whole set uses about as much radiation as one conventional x-ray. I had 4 or 5 aprons piled up on my belly so the exposure to my son was very minimal.
at 3:03 PM on Aug. 10, 2010