The actor I was interviewing had the kind of smile that could light up a room. And by that I mean he had a glow in the dark, Ross in season six of "Friends," shade that doesn't occur naturally in ...

Even if you brush your teeth twice a day, certain foods and drinks can still affect their color.

Got yellow teeth? Find out how to safely improve their appearance. The color of your teeth doesn't always reflect poor oral hygiene. Factors like genetics, diet, and aging can influence their shade.