First let me be clear: I'm not a crazy conspiracy person (...on this) I just don't rely on a municipal well. As far as I know adding fluoride to the private well at my houses is not a thing, good or bad. I did drink municipal water for two years when I lived on campus in college.
That said, is fluoride a benefit to adults or just children?
When I was a kid I got fluoride treatments at the dentist, but then aged out. I've never had a cavity in forty years, but I'd like to keep it that way. Should I still be doing it?
Also no, I'm not using the internet as a substitute for a dentist, just my next dental appointment is in four months. TIA
I moved to Germany in my late 20βs and lived there for 2 years. I went with perfect teeth; I returned with several cavities. My brushing habits did not change, and while you could blame my cavities on several factors (the food was different; I drank way more beer; I got two years older), I've always attributed it to the fact that Germany does not fluoridate their municipal water - and everyone drinks bottled water anyway. At least, the crowd I ran with did. It's been years, but as I remember, you didn't get water at restaurants unless you asked, and then if you did, you got bottled water. In any case, I went from drinking fluoridated water regularly to zero flouride except what was in the toothpaste. And, honestly, I don't remember paying much attention to which toothpaste I bought, and many don't have flouride in them.
So, yeah. It's just one anecdote, and there could have been many other factors, but it convinced me about the importance of flouride. Now we drink municipal water (US), but it's going through a whole-house triple filtration system and I don't know how much flouride we're getting. So in addition to the usual tooth care (brushing, flossing) I also rinse with a flouride mouth rinse, and I've been doing OK dentally.
Well, it's different. On the one hand, you're not getting flouride into your system; on the other, you're not getting flouride into your system.
I really don't know if flouride ingested makes its way to your teeth, or how much difference it makes if it does. But I'm not about to start self-medicating with the stuff, so rinse it is.
I believe the effect is entirely topical, it just doesn't hurt to ingest a little too. The fluoride ions trigger re-hardening of the tooth enamel and can take the place of missing calcium in the outer enamel structure, but those only happen when they hit the outer enamel in your mouth, you don't regrow enamel on fully formed teeth