Laser teeth whitening is an in-office procedure that noticeably brightens teeth. This is great for people whose teeth are stained from years of drinking coffee, red wine, or dark soda, or from smoking. A laser teeth whitening treatment usually takes a little over an hour to perform. A bleaching solution is applied to the surface of the teeth, and a laser light is directed at the mouth. The laser’s heat activates the solution, and subsequently brightens the teeth. Patients walk out with an improved smile, and can expect the results to last for several months to a couple years. Dr. Barbosa recommends custom take-home whitening trays for maintenance.