Our teeth are wearing away at a faster rate than ever before, and one culprit is all that acid we're consuming. Dental erosion is the loss of the protective enamel on teeth and occurs when the enamel is worn away from acids in the mouth. When this happens, our teeth become sensitive, cracked and even discolored.
Acid reflux disease
Eating disorders associated with chronic vomiting
Make sure you get enough fluoride. The best way to do that is by drinking tap water from public water sources instead of bottled water. Also, use a fluoridated toothpaste and fluoridated mouth rinse.