anyone ever do that sedation dentistry thing?

I know at the sedation dentistry places they do it for cleaning and such.When I was younger I figured the harder I brushed my teeth,the cleaner they’d be right.Kind of like cleaning a floor.Well anyways that worked really well and I actually lost alot of enamel this way.My teeth look fine but are sensitive as hell at the gum line.I want them to stay fine as well.
D