Roughly 1.77-million-year-old teeth show that slow development in hominids may have had an earlier start than previously ...

Let's get this out of the way: There is no "normal" range for what a "natural" tooth color should look like. "Teeth vary in ...

Purple and yellow complement each other on the color wheel and they neutralize when combined. If your teeth are yellowed, applying the purple paste can help to cancel it out, leaving your teeth ...