https://www.pressherald.com/2018/02/04/independent-dental-hy...
However, getting the law changed to allow this has been fought tooth-and-nail, so to speak:
https://www.washingtonpost.com/politics/the-unexpected-polit...
Like all licensed professionals, dentists are part of a cartel ("guild"). Some guilds are better than others for their members and/or consumers.
Partners at big city law firms are obviously very well-compensated. But the glut of lawyers has been something of a story in recent years and employment difficulties/low salaries for graduates of second and third tier schools are the norm.
Neither of these professions are examples of highly constrained supply except to the degree that there are only so many ex-military pilots and Ivy League law review grads.
"Commercial jet pilot" has median salary of 6 figures. That is not an entry-level pilot position.
Example: crew reacted incorrectly to autopilot problems following pitot tube obstruction by ice on AF 447 and stalled the aircraft, leading to death of all on board. [1]
My point is that I don’t think there’s a strong correlation between risk to public safety, and remuneration, nor between training and remuneration. There’ll likely be some correlation for both, but you can find huge variations in remuneration across different industries that can’t be explained by those factors.
It occurs to me, though, that vehicle cost might be a factor. How much does a new semi cost? $100,000, maybe? How about a new 737? $80,000,000. Does that influence pay?
If someone has not done a procedure before, I don't trust them regardless of their qualification. If they have done a procedure 100 times, I trust them unless their track record is terrible.
I certainly don't think the government needs to enforce these standards the way they do, occupational licensing is not the answer. Information and voluntary schemes would be a lot cheaper, and probably lead to similar quality.
For a cavity, I could see a DDS diagnosing it and also determining that their Certified Carries Tech can handle it on their own. They pass the work off and move to the next patient.
To keep things safe, require a dentist to be available if the need arises.