When I got there and said I was healthy and I didn't need a mask, they told me I had to wait outside. So I left. And when they called me to say they were ready I went off and called them out for discrimination. Fuck them.
Update: I filed a complaint with their national website, received a call a little while ago about it, and got nowhere with the person on the other end of the line. At least I got another chance to bitch about how stupid it is that I was being discriminated against for being healthy.
That is utter complete nonsense. Of course they have invisible dental issues. Plaque is forming under the gum line, which will lead to gingivitis, periodontitis, bone loss, and tooth loss. Plus a whole bunch of pain, misery, expense, and horrible breath that could stop a charging rhinoceros. Please, nobody believe this "not brushing and flossing" thing is OK if you eat a keto diet or some other diet.
A periodontist told me once, "You don't have to floss ALL your teeth.................just the ones you want to keep."