This book entitled " Role of viruses in periodontal disease " is a well structured and a descriptive work which would help the reader explore the various insights into the initiation and progression of periodontal disease due to a viral etiology. The direct as well as the indirect roles various viruses play via different mechanisms have been well explained and made easy for every dental student to discern, understand and learn. We have to the best of our abilities have tried to make things simple to understand in the form of photos, flowcharts and suitable diagrams. Praise to the God almighty. This book is a journey which could not be have been compiled without the guidance of my mentors Dr Ashish Kumar and Dr Komal Puri and my colleagues. A special thanks to my HOD Dr Manish Khatri and my teachers for their enlightment. I would like to dedicate this book to my parents for their never ending support and encouragement. I hope this book would serve you well. As the legend says " Reading is a gift which depends on how you perceive it "