My baby teeth fell out really early, but I am not sure if that has had any effect on their overall quality. Sort of yellow and very sharp, even by the standards of teeth. The colour is probably due to my neglection of them from age 8 to age 14, but should somewhat correct itself eventually. I have learned to smile with my mouth closed: it negates any chance of mockery and nobody else really seems to have noticed. Oh, and I have had two fillings.
There is a girl in my English Language class that has black teeth, I bet she could give AIDS through a mere blowjob.