But dental experts say the impression materials can damage dental work, such as fillings, crowns, and bridges. Check with your dentist first to find out if you are a candidate for teeth bleaching. Your dentist can tell you if bleaching is safe for you, give you an idea of what kind of results you can expect, and some guidelines on proper use of at-home bleaching kits. The color of your teeth can be affected by many things. In some people, the teeth naturally darken with age.
Cigarette smoking can also cause tooth stains.
Small children who take these drugs may develop similar stains on their permanent teeth. Trauma or damage to a tooth can cause it to turn gray, blue, or black. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.