If you are unhappy with the color of your teeth, whitening can be used to brighten up your smile. First, a mold is taken of your teeth. The mold is used to make a custom tray to hold the whitening gel against your teeth. These trays are yours to keep and can be used whenever you would like an additional whitening. Whitening gel is placed into the tray and then fitted onto your teeth. Your doctor will show you how to perform additional applications of the gel at home. In a short period of time, you will notice whiter teeth and a more attractive smile.