For those that prefer to do it themselves at home, tray based tooth whiteners are the way to go. Upon your visit with to Rosemont Dental we would take dental impressions of your teeth. The impressions or “mold” would be sent to a dental lab where they would fabricate a mouth guard-like tray that is an exact fit to your teeth. When you are ready to whiten your teeth you would simply fill the trays with a small amount of peroxide-based bleaching agent and press the tray firmly in place. These trays would be worn for a couple hours per day until the desired shade is reached. You would keep these trays and bleaching agent for future use or whenever think you need to brighten your smile again!