Esthetics, by definition is the science of beauty, derived from the Greek word 'perception' which deals with beauty as an art.In the modern civilized, cosmetically conscious world, well-contoured and well-aligned white teeth set the standard for beauty. Such teeth are not only considered attractive, but are also indicative of nutritional health, self-esteem and hygienic pride. The causes of tooth discoloration are varied and complex. Tooth discolorations can be broadly classified as Extrinsic or intrinsic. A third category of 'stain internalization' has recently been described to include...