So I had a patient ask me the other day if diet soda was bad for their teeth. And being a medical student I told them to ask their dentist the next time they go since I'm not qualified to answer that. Regular soda is a different issue due to the sugar, but obviously this isn't an issue in diet soda. There's that whole old-wives tale about putting a tooth into a bottle of any kind of soda and how it will dissolve. Hardly a real life scenario to say the least. I've heard about the acidity wearing away the enamel possibly, but by word of mouth, not scientific sources. So anyways is diet soda really bad for dental health or is it no big deal?