The reason I ask is because as a kid, I had pretty weak teeth or something and would have a cavity or two everytime I would go to the dentist. I'm 24 now, and probably haven't had a cavity in around 6 years or so. My theory is since I have filled cavities in all my molars(sp?), there is no more room left for more cavities to develop? The outsides of all my teeth look basically regular, no stains or anything, just regular white-ish colored.
