[DonDavis]

To each their own, but does he have a Hygienist?

Quite frankly, a DDS is not trained on teeth cleaning. But many DDS do not hire a Hygienist to save money.
I used to think the DDS was "checking" the Hygienist's work, till I was educated otherwise.
Different roles for each.

My ex is a Hygienist and a very close friend maintained several DDS office equipment, ( chairs, xray, autoclaves, etc ).

I'm guessing your teeth are fine, but I bet your gums could be better.