I've posted this before, but I went to a new dentist one time and though I'd never had a cavity, the new dentist said I had nine, some of which were pretty bad and needed immediate treatment lest they require a root canal. I didn't have any money or dental insurance at the time, so I didn't go back and just worried about it a lot for a while.

That was twenty-five years ago. Haven't been to a dentist since. My teeth are fine, and always have been.

Funny story about the 'no cavities' thing - when I was maybe 12 I went to a new dentist who found a cavity in a molar, drilled it out, and filled it with some sort of 'invisible' polymer filling and charged a whole bunch of money for it. Next dentist I went to, I mentioned the cavity and he said nobody had drilled on the tooth and there was no sign of a cavity or a filling of any type there.

Some years later, I was reading somewhere online and found out that the dentist who "filled" the "cavity" was a subscriber to a dental practice management program run by the Church of Scientology that, in part, taught that it was OK to rip off patients who weren't Scientologists. A few years after that, the dentist got arrested for molesting children and is probably still in prison.