Whitening toothpastes remove stains, but they don't change the color of the teeth. Another product, involving a three-step procedure, contains harmful products that may etch the teeth. Movie stars advertise a bleaching product that contains more preferable ingredients, but the tray is ill-fitting. Recent studies indicate the technique supported by Dr. Haywood usually lasts from one to three years. If the teeth start becoming dingy, all you need to do is to wear the tray for a couple of nights and the teeth return to their brighter color.
Current research is focused on tetracycline-stained teeth.
Restoration of the discoloration from this drug can take up to six months or longer. If someone is interested in this procedure, they should schedule an appointment with their dentist to see if they would be a good candidate.