Contrary to what you might think, it's not only the sugars in bubbly beverages that erode tooth enamel. It's also the acids. The total acid content and acid type -- look for names like phosphoric, citric, malic, and tartaric -- in a beverage affect how strong the attack is on your choppers. Rinsing after sipping a soda may hasten the acids out of your mouth.
All carbonated drinks in a recent study had some impact on tooth enamel (with the one possible exception being root beer -- its impact on tooth enamel was slight). Citrus-flavored sodas hit teeth hardest, but colas caused problems, too. And it didn't matter if the drinks were diet or full-sugar.

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