OverviewTeeth whitening is one of the easiest ways to improve your appearance. Whiter teeth can boost your self-esteem and confidence. Years of drinking coffee, tea, cola, red wine, and smoking eventually takes their toll on teeth. The results are dull, yellowish-colored teeth. Some teeth may have darker gray-colored stains due to antibiotics. Most teeth will benefit from tooth whitening. Teeth whitening is a proven safe and effective way to brighten stained, discolored teeth.Your dentist has a .