Dr. Chris Chang received his PhD in bone physiology and Certificate in Orthodontics from Indiana University in 1996. Dr. Chang is a Diplomate of American Board of Orthodontics(ABO). He is author of iAOI workbook, ABO Case Reports, Jobsology and publisher of International Journal of Orthodontics and Implantology(iJOI). Dr. Chang is frequently invited worldwide to lecture on a wide range of topics, including the Damon system, impaction treatment, OrthoBoneScrews, implant-orthodontic combined treatment and Jobs’ effective presentations. In addition to teaching and private practice, he also founded Newton’s A, Inc. and Beethoven Orthodontic Group in Taiwan and produces a podcast series, Podcast Encyclopedia in Orthodontics as an innovative E-learning tool. He has been actively involved in the design of orthodontic bone screws and application on impaction treatment. His latest focus is implant and orthodontic combined treatment.