Efficacy and safety of various tooth-whitening products, with special reference to the three dimensional colour space (L*a*b*) measurements and the microhardness tests

Philosophiae Doctor - PhDTooth-whitening or tooth-bleaching has become an integral part of modern dental practice. Today, a large number of whitening products are available on the market which are commonly categorized into dentist-supervised home bleaching, in-office bleaching and over-the-counter bleaching products according to their mode of application. This thesis looks into safety and efficacy of various tooth-whitening products and methods.South Afric