I just had a dentist apt yesterday, so this is on the brain. I've been going to the dentist since I was little, so never had a problem with it. I had the same dentist for 25+ years, and he was great. So last year when I saw a different dentist in Toronto for the first time, I was a little nervous, and not super impressed. However, turns out he's no longer working at the office I'm going to (around the corner from my house. I picked the most convenient), but the dentist I saw yesterday seemed to really know her stuff, so I feel better.... except that she found 2 cavities. I haven't had any in at least 15 years! Nooo!
My teeth have always been fairly healthy, though in hindsight there are a few celiac signs, like very ridgy teeth, they're pretty tight/kind of crooked, and tend to yellow easily.
There can be gluten in toothpastes and such occasionally, so it's good to ask your dentist if the pastes and such they use are gluten-free.
The dentist can be scary. Sharp objects in your mouth and drilling is no fun, but taking care of your teeth is important. Which means I should be flossing more.