He doesn't use X-Rays to find cavities, he's got this laser thing that directly measures the tooth density and makes little werping noises when it is low. He found a couple of things (which I had no reason to suspect weren't problems as they were highlighted as problem areas by another guy ten years ago, and one of the other problem areas he said still isn't enough of a problem to be worth doing). It seems a much more objective system than poking at things or looking at X-Rays. I got a couple of filling done via laser drill, which I didn't need anesthetic of any kind for. (Those with low pain tolerances might, it wasn't pain free, but it was OK and I preferred it to a droopy drooly mouth for most of the rest of the day.)

I figured I'd just been out of the game for a decade and a lot has changed but I've mentioned this to my coworkers and few of them recognized any of that stuff. Your anecdotes solicited.