John J. Warren, DDS, MS, is a professor in the Department of Preventive and Community Dentistry at the University of Iowa College of Dentistry in Iowa City, where he also directs the graduate program in dental public health. He is a board-certified public health dentist and serves as secretary-treasurer of the American Board of Dental Public Health. Warren is an active researcher and has published more than 150 peer-reviewed papers.
While the exact cause of American Indian and Native Alaskan children's high prevalence and increased severity of caries is not well understood, possible solutions have been proposed.