Calcium silicate is a compound that can be derived from limestone and diatomaceous earth, and has applications as an anticaking agent in food preparation, as insulation, and more. The four chapters of this book explore the various characteristics and applications of calcium silicate. Chapter One examines the effectiveness of calcium-silicate cements in furcal perforation repair. Chapter Two investigates methods of producing cement with lower energy consumption by using calcium silicate. Chapter Three deals with the use of synthesized calcium silicates in compositions for the restoration of buildings. Lastly, Chapter Four evaluates and compares the effects of simulated tissue fluid on the Berkocivh microhardness of four calcium silicate cements.