Dr. Ngan is an Honorary Professor in the Faculty of Dentistry, University of Hong Kong and a Guest Professor at Wuhan University, School of Stomatology, China. Dr. Ngan holds a dental degree from Harvard University, School of Dental Medicine and Certificates in Orthodontics, Pediatric Dentistry and Hospital Dentistry from the University of Pennsylvania, School of Dental Medicine / Children Hospital of Philadelphia. Dr. Ngan’s research focuses on growth and development, appliance therapy and implantology. He has published over 160 peer-reviewed articles and 180 abstracts. He is a member of the Angle East (Eastern Component of the Edward H. Angle Society), a Diplomate of the American Board of Orthodontics and a Diplomate of the American Board of Pediatric Dentistry.