What Makes Your Teeth White?
Your tooth enamel might seem white, but really it is clear. Light can shine through it. The layer underneath, dentin, shows through, and that is what makes a tooth look light or dark. However, over time, coffee, tea, wine, cigarettes, and other substances can stain the outer layer of your teeth a dingy yellow or gray. Maintaining healthy dental care habits at home and seeing a dentist regularly will help to keep your teeth looking white