Figure 51-10. A, Dental and periodontal tissues from the right side of the mandible of an adolescent. B, Twenty intra-oral films of the permanent teeth. The teeth are being viewed as they would appear from within the oral cavity. (From McCall, J.O., and Wald, S.S., Clinical Dental Roentgenology, 4th ed., W. B. Saunders Company, Philadelphia, 1957, courtesy of the authors.) Click for high resolution image.