Does it harm teeth?
All sugary foods, including sodas, can cause tooth decay, especially if you consume them frequently and don’t brush regularly, though sticky foods tend to be worse than beverages. Sodas (including diet) are also acidic and, like any acidic food or beverage, can break down tooth enamel. For most people, this is not a concern, but those with chronic dry mouth have less saliva to wash away the acids.