On the other hand, dental x-rays are overused and do not improve dentists' ability to detect cavities in most patient populations. And even though a diagnostic

On the other hand, dental x-rays are overused and do not improve dentists' ability to detect cavities in most patient populations. And even though a diagnostic x-ray machine can't point an electron beam at you, it can still give you a bigger than intended dose. (Yes, I know that dental x-ray doses are typically very low to start with).