Operative dentistry has evolved through centuries with the advancement in the procedure techniques and material sciences.Success of the operative procedures depends not only on the techniques but also on the judicious use of the dental materials.The main goal of the operative dentistry is to restore the proper tooth form in its harmonious function and esthetics.To achieve this goal large number of research was done and even being carried out today by many researchers to develope new and better restorative techniques and dental materials.Various materials used in operative dentistry are metal alloys like gold, silver, cements, ceramic and composites. Among these materials used, dental cements play a major role in operative dentistry. This book is a compilation of all dental cements and their application with their advantages and disadvantages.