@ShovelTrouble @Ghislaine There are at least two forms of it, and the best one is a special treatment that only your dentist has and involves a foam tray and fluoride gel that is not supposed to touch your gums at all because you don't want it absorbed. My dentist always said in order of importance:
>Floss
>Dry brush (no toothpaste)
>Brush with toothpaste
>fluoride
Flossing is more important than fluoride, but you can't dump floss into the water supply as an industrial waste byproduct from aluminum fabrication, so here we are. On that note, floss your damn teeth fellas.