Just become your own dentist theory
For real though, I think if you take great care of your teeth by brushing, flossing, mouthwashing, and using a waterpik, you can prevent dental issues so you don't have to deal with these greedy money whore dentists/dental insurance fags.
You can even look up guides on how to clean your teeth professionally using dental tools bought for cheap on Amazon (scrapers and such). I wouldn't conduct any actual dental surgeries without a professional however.
And for a major operation it is probably better just to go to a poorer country than the one you live in to get surgery. Some people in the US go to Mexico for medical and dental and cosmetic operations since basically every one of those is cheaper down there by a massive margin. It is a good way to escape the massive scam that is the American medical system.