Dr. Chris Chang

Orthodontist with more than three decades of clinical and teaching experience. Founder of Beethoven Orthodontic Center and Newton’s A Inc. in Hsinchu, Taiwan. Earned a PhD in Bone Physiology and a Certificate in Orthodontics from Indiana University. Diplomate of the American Board of Orthodontics and active member of the Angle Society–Midwest.

Clinical and scientific work focuses on temporary anchorage devices, extra-alveolar skeletal anchorage, and orthodontic biomechanics. Dr. Chang invented the OrthoBoneScrew (OBS®) system and developed clinical protocols using strategic bone screw placement to control tooth movement in three dimensions. These approaches are applied in the treatment of impacted teeth, open bites, facial asymmetries, and selected complex Class II and Class III malocclusions, including cases managed without orthognathic surgery.

International lecturer and educator teaching OBS biomechanics through courses, workshops, and clinical demonstrations worldwide. Publisher of the Journal of Digital Orthodontics and author and co-author of the six-volume Orthodontics book series, as well as clinical publications on skeletal anchorage and the biomechanics of complex orthodontic treatment.