Whitening (or bleaching) is very popular - you can find many over the counter products on the market. We recommend the tray system, which is clinically proven to far surpass other methods of bleaching, for keeping your teeth white for long periods of time. This method includes treatment-strength bleach at home. We continue to have wonderful success with this system and can lighten most individuals teeth between 2-4 shades. Once you have bleached 7-14 days, you can purchase bleach to "touch up" once/twice a year. With good maintenance your trays should last for many years, unlike the over-the-counter throw away products.

Example from Dr. Clark-Lowell's work: