Over the years, most people's teeth will absorb stains from food, drink, tobacco, etc. As a result, their teeth will turn a couple shades darker. For these patients, we can fabricate a custom tray into which a bleaching solution can be placed. Patients apply the solution into the tray, then wear the tray for a few hours every day for a couple of weeks. After a couple of weeks, most patients' teeth will lighten a couple shades, which in most situations is a very noticeable improvement. This process does not work as well for patients with deep stain such as from certain antibiotics taken in childhood. In these situations usually, a porcelain veneer, or crown is needed to mask the stain.