It is with this very thought in mind that the second edition of the Textbook of Dental and Maxillofacial Radiology has been written for the new generation of dental students and the practitioners, so that they can update their knowledge. The past three decades have witnessed great advances in the field of diagnostic imaging. Many of these advances have greatly facilitated the diagnosis and treatment of a number of maxillofacial disorders. These modalities while employing different physical principles, are often complimentary, providing valuable information about different aspects of a given disease process. Many chapters have been entirely rewritten and the rest of the text has been significantly revised, reorganized and updated. These major changes are necessary to reflect the increasing complexity and sophistication of this expanding field. The number of chapters has increased from eighteen to thirty seven with the underlying aim to include all pathologies that a general practitioner could encounter about which diagnostic imaging technique to opt for and how to read and interpret the resulting image obtained. Separate chapters on CT, MRI imaging techniques and their basic interpretation and landmarks seen on a CT and MRI plate have been discussed. New topics of growing importance in Oral and Maxillofacial Radiology like, role of Oral Radiology in Forensic Medicine and Implant Radiology have been added.