Er....
AalRIGHTYthen! It seems to me that you are working with folks who suffer from Cranial-Rectal Inversion. A situation that will obviously (to you and I) never "rectify" itself. (If you get my meaning...)
As for the factoid, I'm supposing that dentists were honest, then...(no offense to any honest dentists who read this...)
>> I'm supposing that dentists were honest, then...
There weren't insurance companies, then.
And there weren't malpractice suits, then.
And there wasn't novocaine, then.
Less liability and more barbarism probably accounts for most of the lower relative earnings.