There are a number of people today concerned with the dangers of radiation exposure that is associated with having dental x-rays.
There is an annual occupational exposure limit that has been set by the federal government. This limit is currently set at 5,000 mrem or millirems, which means that you can safely be exposed to any radiation limits that are below this level.
The average person is only exposed to around 350 mrem every year from background radiation sources such as flying on an airplane, living in a brick building and other sources.
Given the levels of background radiation, you would still need to endure close to 70 full mouth x-rays every year in order to reach the maximum exposure limit of 5,000 mrem.
