The process of tooth whitening enhances the colour of a tooth. Tooth whitening can be achieved by either changing the intrinsic colour or by removing and controlling the formation of extrinsic stains.
Bleaching is the procedures to whiten the tooth, generally use a light-cured protective layer that is carefully painted on the gums to reduce the risk of chemical burns to the soft tissues.
The bleaching agent is either carbamide peroxide, which breaks down in the mouth to form hydrogen peroxide, or hydrogen peroxide itself. Bleaching agents are applied over the tooth for some minutes, then cleaned with water to get whitened tooth. Result may vary from patients to patients. Bleaching agents are allowed to be given via dental practitioners, dental therapists only.
