This is because the enamel gets less permeable this altering the tooth’s mineral structure. Teeth also get discolored depending on the amount of tea or coffee you consume. Another reason for discolored teeth is if you are in the habit of smoking, chewing tobacco or betel leaf as is common in Asia. Since white teeth are connected with youth, bleaching procedures have plenty of takers in recent years. The teeth whitening techniques used in cosmetic dentistry are surely exceptional ways to whiten and brighten your smile.  

Anybody who has already got his permanent teeth can meet the criteria for teeth whitening. There are plenty of whitening methods to think of beginning with the whitening toothpastes or bleaching kits that are within everybody’s means. Then you move on to the more sophisticated methods provided by cosmetic dentistry like costly in-office whitening sittings or laser bleaching.  Cosmetic dentistry employs two core methods of teeth whitening. In the first method, often referred to as power bleaching or office bleaching, a highly concentrated oxidizing agent is used. In the other method called take home bleach or over the counter bleaching, a narrow mouth guard a used to hold a low concentration of oxidizing agent near the teeth for several hours a day over a period of five days to two weeks.   

Laser teeth whitening is the most costly option in cosmetic dentistry but it also produces the most remarkable results.