How the color of your teeth changes may help point to the cause: Yellow. As you age, the white enamel surface of your teeth may wear down. The yellow core of your teeth becomes more visible.

Teeth whitening is a procedure to lighten the color of your teeth and remove stains. You can have it done at a dentist's office, or do it yourself at home. There are many teeth whitening methods ...

And new technologies and materials allow dentists to make significant changes to the shape and color of teeth. But are these changes purely for looks? And what do they do to people's natural teeth.

LuckyBusiness/Getty Kahng highlighted four particularly misleading trends: "For starters, the use of natural remedies ... they do not alter the color of the tooth from within." ...

People who are concerned about the color of their teeth should avoid ... but a dentist can check for enamel loss and tooth decay. Natural remedies can help people whiten their teeth at home.

In the end, Dr. Kopycka-Kedzierawski said, everybody’s teeth are different. The natural color of your teeth, the porosity of your enamel and the sensitivity of your teeth can make you react ...