The role of genetics in health and oral health care has not received the due attention of the dental practitioners who otherwise are in a crucial position in identifying the patients with genetic disorders and offer requisite counseling and referral to designated genetic centers.Genetic disorders are attended with less importance than other diseases in public health problems. Therefore, better understanding of the genetic etiology of the diseases can facilitate early detection in highrisk groups.This book gives us the insight to many such diseases and their related genetic factors.