I generally give people the benefit of the doubt when they say something that may or may not suggest pedophilia (not that I'd have even thought of that if you hadn't mentioned it).
Subrosa's wrong. Teeth falling out is supposed to represent fears about image, how you present yourself to others, losing face (so to speak), etc.
Or something like that. Or they're just dreams involving teeth falling out.
I had a dream when I was little that my two front teeth came out randomly, and they were, like, three feet long. They were tusks, really. They'd fit in my mouth before, but they fell out and grew into tusks thereafter, and were laying on the table at school, and I was just kind of looking at them--sort of like, "Huh. Ain't that the damnest thing."