I am from UTAH, I'm not an international student so I don't really know about the international situation. But from what I have heard from many of the dentist I know in utah is that the state is quite saturated with dentists. BYU has a 90% or better acceptance rate to dental school, and after completion of dental school I would guess a majority of those dentists want to return to their home state (because utah is very family oriented).
The state may be restricting the influx of international dentists, because there are already so many practicing dentists there.