When an individual is unhappy with the color of their teeth, sometimes whitening can be used to brighten up their smile. First, a mold is taken of your teeth, so an exact replica of the teeth can be made. Next, they will use the mold 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 feel you need an additional whitening in the future. Once the tray is ready, 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 from home. After a short period of time, you will notice you have whitened teeth and a more attractive smile.