The trouble with teeth is that cavities don’t hurt until the bacteria is close to/into the nerve. The nerve will try to protect itself but eventually it gets overrun by the bacteria and pain/infection develops. In saying that, some of the early cavities are reversible with good oral hygiene. There is definitely a conflict of interest though. Our weak money creates an incentive where the dentist or physician is incentivized to treat disease more than we are incentivized to prevent it!