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Tooth bleaching is one of the most common and inexpensive treatment for discoloured teeth. The colour of the teeth is of great importance to majority of the people and any discolouration or mild defect on the tooth can negatively influence the quality of life. Therefore this book provides a brief review about the bleaching procedure, history of bleaching, advanvcements and also explains the side effects of bleaching which is although minor. This book also discusses the details of each and every material which is being used for the bleaching, its composition and chemical reactions.