Bleaching / Teeth whitening/ Bleaching discoloured teeth Cosmetic dentistry has become an integral part of restorative dental practice. It is generally perceived that whiter teeth enhance the beauty of a person's smile. Etiology of Tooth discolouration- What is teeth discolouration?? TOOTH DISCOLOURATION - It refers to change in the colour or translucency of a tooth due to extrinsic or intrinsic factors. Extrinsic discolouration- These include strains that are deposited on the external surface of the tooth. Frequent intake of coffee, tea, red wine, carrot, oranges, etc can stain the teeth. Poor oral hygiene and chronic smoking are also frequent causes of extrinsic factor. Another common cause of extrinsic factor include chromogenic bacteria and prolonged use of mouthrinses containing chlorehexidine. Intrinsic discolouration- These occurs because of stains incorporated within the tooth structure due to various reasons- 1) Intrapulpal ...