This book has been devoted to Stem Cells and begins with the brief introduction to the stem cells. The succeeding chapters deal with the applicability in dentistry, cancer stem cells in oral and maxillofacial region, regenerative therapies in dentistry. This book will prove useful to the researchers in the field of stem cells. Also it would provide an easy way to understand for the undergraduate and postgraduate students about the stem cells in lucid and simple language.Inspite of sincere efforts, elements of human error or shortcomings are likely; the readers are welcome to point out all such mistakes and render valuable suggestions for further improvement and shall be greatly acknowledged.