AnswerBank Answer:
What makes teeth white?
Teeth come in a wide variety of natural shades of white. Enamel is the durable, white covering on the exterior of the tooth above the gum line. Enamel protects teeth from the wear and tear of chewing. It can wear away over time, exposing some of the layer of dentin beneath. Everyone's enamel is a slightly different thickness and brightness, and dentin can be different shades of yellow.
