In an old science experiment, a teacher would put a tooth in a bottle of cola to display the perils of sugar; the tooth would disappear in a few days.
Researchers have now demonstrated that non-colas, canned iced teas and even diet drinks also can weaken and erode tooth enamel. As a result, the average American, who washes down two 12-ounce cans of soft drink every day, is unwittingly making his or her teeth more vulnerable to cavities.