By Paul S. Casamassimo, DDS, MS, Professor and Chairman, Department of Pediatric Dentistry, College of Dentistry, Ohio State University, Columbus, OH; Henry Fields, DDS, MS, MSD, Professor, OSU College of Dentistry; Chief, Orthodontics, Nationwide Children’s Hospital Department of Dentistry, Columbus, Ohio; Dennis J. McTigue, DDS, MS, Professor and Associate Dean for Academic Affairs, Department of Pediatric Dentistry, Ohio State University College of Dentistry, Columbus, OH and Arthur J. Nowak, DMD, Professor, Departments of Pediatric Dentistry and Pediatrics, Colleges of Dentistry and Medicine, University of Iowa, Iowa City, IA