Genetics is a challenging topic for dental students to understand. This book has been written in clear and easy language to help students built a clear concept about Genetics. It will also help the Post graduate students to understand the link between genetics and Periodontal Disease. The book begins with a brief introduction about genetics and the various basic terminologies associated with it. Various basic genetic study designs used to assess the relationship between genetics and oral diseases have been explained.The authors have thrown light on the newer diagnostic and treatment modalities for various oral and periodontal diseases which are based on genetics and gene therapy. The book will definitely benefit all the under graduate and graduate students to understand and upgrade their existing knowledge about genetics and periodontal disease.