In-office bleaching is done by the dentist at the clinic. It takes one to two visit, which depends on the severity of the stains. During this procedure, the dentist applies a protective gel on your gums. A bleaching agent is then applied on the teeth and the action is enhanced by laser light or some special light.
At-home treatment: The dentist will take impressions of your teeth, and will prepare custom trays which fit well to the teeth. The patient is advised to apply a whitening gel on the teeth, by placing it in the tray and wear the tray for several hours everyday, as prescribed by the dentist. This continues for 1-2 weeks.
Toothpastes: All the toothpastes remove the stains and debris from the teeth by the action of mild abrasives in the paste. Whitening toothpastes contain special chemical which helps whitening your teeth.
People may have sensitivity after this treatment, which is momentary generally. If the sensitivity persists consult your dentist for the same. You may also feel mild irritation on your gums after the procedure. This is due to the chemical used for teeth whitening. It will go in some time.
Proper hygiene maintenance is important to keep your teeth sparkling after the treatment.