Teeth whitening treatment can be a very effective way of lightening the natural colour of your teeth without removing any of the tooth surfaces. It cannot make a complete colour change, but it may lighten the existing shade. There are a number of reasons why you might get your teeth whitened. Everyone is different and just as our hair and skin colour varies and so do the teeth. Very few people have brilliant-white teeth, and our teeth can also become more discoloured, as we get older. The dentist or a dental hygienist will clean your teeth. This will remove the film of bacteria, food and other substances that build up on your teeth and contribute to the staining. Once this is done, the whitening procedure begins. Teeth whitening that are done by your dentist can get teeth brighter faster. The bleaching solution is usually much stronger than home kits. Also, heat, light, or a combination of the two may be used to speed and intensify the whitening process. Thus bleaching is a process where they use bleach to restore the natural tooth shade or whitening beyond natural tooth shade. There are many methods of the way bleaching is done by generally using carbamide peroxide or hydrogen peroxide. Dental Whitening is among the most popular cosmetic dental procedures because it can greatly improve how your teeth look. Most dentists perform tooth whitening. Whitening is not a one-time procedure. Some whitening agents are activated by a laser light, special lights or by the heat from these lights. After the whitening agent is applied, the dentist will shine the light on your teeth. If they are badly discoloured then the bleaching process at home will take a few days or weeks.