Unfortunately, a surprisingly large number of people have a very significant amount of acid damage to their teeth and usually they are completely unaware of the damage until it becomes severe and the teeth become sensitive or unattractive. There are several different types of acid damage. One type is stomach acid reflux or heart burn where some of the stomach contents get regurgitated into the throat and mouth, usually after a large meal. When this happens other than on a very infrequent basis, the teeth will actually begin to dissolve because of the acids. The pattern of acid erosion is very specific to certain surfaces of specific teeth with many of the visible surfaces completely left alone. A similar pattern of acid damage occurs with bullemia.