Like g09's DS, my DD1 has enamel hypoplasia and AB's can cause a deterioration in the enamel as the teeth are developing.
My DD's isn't too bad, seems to mainly affect her molars, she's had no caries (cavities) so far and they've put a protective coating. We are pretty careful with brushing and drinks (water or milk at home, the occasional juice as a special treat at parties, no soft drink).
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KiwiMum24 - Mummy to DS(6), DD(4), DD(2), DS
"All moments are key moments and life itself is grace" Frederick Buechner