No, really, my dentist friend told me!
Something about chewing gum (sugar-free, of course) after you eat helps prevent cavities. Maybe the stickiness of the gum attracts the bad stuff between your teeth or something and then when you spit it out, you're spitting out a wad of bacteria and germs. Ewww...okay, that's kind of gross. Sorry for that.
But yeah, my favorite gum right now is this fresh tasting Orbit Citrusmint. I love the taste of citrus, and obviously, mint is always refreshing. Whoever thought of putting these two things together is my hero.
Available at all drugstores, grocery stores, Wal-Marts and Targets.