Is there some correlation I'm not familiar with? I haven't paid attention to any of my dentists' politics, I just want them to prevent tooth decay, but is that a thing? It's not like cops or ICE where you HAVE to be an evil bastard to join or remain a dentist.
My dentist is a really faithful Jewish guy who's super honest, donates a lot of his time to doing dental work for those who can't afford it, and bends over backwards making sure paying him isn't an unreasonable burden.