I started writing this book during my Post-graduation with an aim of sharing my findings with the larger community of dental surgeons. This book documents all the diagnostic biomarkers present in our oral cavity which play an important role in identifying periodontal diseases in the laboratory. This book is one of its kind as it consists of picture based explanations, data and charts along with information about new and advanced biomarkers available commercially in simple and lucid language. Authoring this book has given me a sense of accomplishment and i hope that it proves its utility by concluding your search for a comprehensive and practical reference material on diagnostic oral biomarkers.