[karrie20x]

Um - I've heard of calcium deposits, but not actual calcium teeth. Could that possibly be an urban legend?

Vitamins ARE good and people and animals need them. However it is the "excess" that causes harm. Also, some people metabolize vitamins and minerals at different speeds. Some people have a hard time metabolizing them at all. Habits such as smoking diminish the vitamins in one's system. If a person is concerned about their vitamin intake, they should consult their doctor.