Teeth whitening is a simple process. Whitening products contain one of two tooth whitening (hydrogen peroxide or carbamide peroxide). These bleaches break stains into smaller pieces, which makes the color less concentrated and your teeth brighter.
Many extrinsic stains caused by food and drink can be removed by regular professional cleanings and home care. Good home care includes brushing, flossing and rinsing after meals.
Discoloration often can be removed by applying a bleaching agent to the tooth enamel. One technique is called “power bleaching.” With this method, the dentist applies a light-activated bleaching gel. It causes the teeth to get significantly whiter in about 30 to 45 minutes. Several follow-up treatments may be needed, or take-home bleaching trays may be provided.
A second technique is where moulds of the teeth are taken and custom fitting bleaching trays are made into which the bleach is placed. The length of time that the bleaching tray needs to be worn depends on the strength of the bleach. The procedure is done by a Dental Hygienist.