is the founder of Beethoven Orthodontic Center
and Newton's A Inc. in Hsinchu, Taiwan
He received his PhD in Bone Physiology and Certificate in Orthodontics from Indiana University. He is a diplomate of the American Board of Orthodontics and an active member of Angle Society-Midwest.
Dr. Chang is the publisher of Journal of Digital Orthodontics and has authored and co-authored many orthodontic books, including Orthodontics Vols. 1-6, as well as Words of Wisdom, Jobsology and Trumpology.
He is the inventor of OrthoBoneScrews(OBSÒ).