As it turns out, it’s not the sugar in soda that eats away at tooth enamel – it’s the acids, which are used as flavoring agents. That’s why diet and regular soft drinks do equal amounts of damage. What’s more, light-colored sodas, such as lemon-lime varieties, can be more destructive than colas.
Sipping a soda over a long period of time does even more damage. And swishing a soda around your teeth is even worse. So be smart – give up soft drinks until your braces are removed.