I had the latter kind growing up. Moved away, and went to a dentist with a fancy name and close to my office. Huge mistake. I’ve lost track of how many they drilled. My mouth hasn’t been the same since.

I have a new dentist now who’s much like my previous one. My advice to anyone with a new dentist - if your new dentist suggests a bunch of new fillings when your track record differs dramatically, get a second opinion!