John R. Kalmar, DMD, PhD, is a clinical professor in the Division of Oral and Maxillofacial Pathology and Radiology at The Ohio State University College of Dentistry in Columbus. He is a director of the American Board of Oral and Maxillofacial Pathology and a past president of the American Academy of Oral and Maxillofacial Pathology. Kalmar recently served on the American Dental Association expert panel to review and assess adjuncts for the detection and assessment of potentially malignant oral disorders. He can be reached at kalmar.7@osu.edu.