Vinegar turns up in lots of places -- salad dressings, sauces, potato chips, pickles. And each one could spell trouble for tooth enamel. In a study, teenagers who frequently consumed vinegar-containing foods had a 30%–85% increased risk of enamel erosion compared with teens who didn't consume those foods. Teens are more vulnerable to erosion because of less mature tooth enamel. But it's a good idea for people to be aware of the potential impact that vinegar can have. Vinegar is a low-fat way to add flavor, but rinse afterward to protect your teeth. Find out how to properly care for your teeth and mouth.