That hasn't stopped other fields. You can get skin patches that utilize micro-needles to inject serum into your pimple, reducing the need to wait for pimples to "naturally" disappear. This was previously thought to be wildly unaffordable. Didn't we just get a new breakthrough for hair regeneration earlier this year using similar techniques?

Fact of the matter is, dentristry has lagged so far behind other fields because there's a lack of care for it. Dental is often not even considered "healthcare", despite how important oral health is to general health. It's also the easiest to hide, who cares about actual rotting teeth just sharpen them down and replace them with plastic. Whereas things like skincare and hair get far more priority due to being visible. Of course there's also the severity, people don't care if their teeth disintigrate, but a broken leg is a broken leg and gets handled appropriately.