Genetics is the science of heredity and variation. It plays an important role in determining our individuality. Genetics provides an insight into what makes us humans and what distinguishes each of us as individuals. Normal development and maintenance of the craniofacial complex is highly regulated at the molecular level. Tooth development as such is also regulated at the molecular level with hundreds to possibly several thousand genes being involved in the process. This book provides an insight into the different aspects of Genetics in Pediatric Dentistry