Dan Grauer, DDS, PhD maintains a private practice limited to orthodontics for teens and adults in Santa Monica, California. He specializes in computer-guided orthodontics where invisible customized appliances are fabricated based on the face, occlusion, and smile. He is a Professor of Advanced Orthodontics at the University of Southern California, an Examiner for the American Board of Orthodontics, an Associate Editor for the American Journal of Orthodontics, and a member of the American Association of Orthodontists Committee on Technology.

Robert Relle received his DDS from Indiana University School of Dentistry, and specialty training in oral and maxillofacial surgery from Harbor-UCLA Medical Center. He was a full-time staff surgeon at Kaiser Hospital, Los Angeles Medical Center before entering into private practice in Century City, where his practice is limited to orthognathic surgery. He was an examiner for the American Board of Oral and Maxillofacial Surgery. Dr. Relle is currently a lecturer at UCLA School of Dentistry, and co-chairs the Dentofacial Conference in the graduate orthodontic program at USC. He has published and lectured nationally on various topics in the field of orthognathic surgery.