Does increased legal independence for hygienists equate to increased earnings and employment opportunities?

I came across this interesting study from the National Bureau of Economic Research titled, “Battles Among Licensed Occupations: Analyzing Government Regulations on Labor Market Outcomes for Dentists and Hygienists” (November 2010).  I don’t know how accurate the conclusions are, but I do know one thing for sure.  Any legal effort to make dental hygienists (or…