I've drank a lot of coke all my life and my teeth are pretty good, I've never had any problems with my teeth.
Although obviously sugar etc.. will have some effect on your teeth, i think it totally depends on what your teeth are like when your born, I think they're always gonna be what they're gonna be.
My brother doesn't drink any fizzy, doesn't eat hardly any sugar and he's had no end of problems with his teeth.. they're like he's eating a bag of sugar a day, when he's not.
Just my opinion...
Edited: 16/11/2010 at 07:51