This book contains extensive as well as upto date information about Radiation and its effects on human being with special reference to dentistry and radiation therapy. Role and responsibilities of a dentist, Oral Physician and Oral surgeons have been emphasized with proper references. This book contains illustrative pictures for all the radiation effects on oral and maxillofacial regions. This book can be used by the BDS, postgraduates in Oral Medicine and Radiology, Oral and Maxillofacial surgery, as well as by general practitioners for a proper knowledge, diagnosis and hence the managements of radiation induced effects on Oral and maxillofacial regions.