Current stream of digital technology
Surface-based Three-dimensional Cephalometry: An Objective Analysis of Cranio-Mandibular Morphology
Takashi Yamashiro, DDS, PhD
Professor and chairman
Department of Orthodontics and Dentofacial Orthopedic
Graduate School of Dentistry, Osaka University
Dr. Yamashiro is a professor and chairman of orthodontics at Osaka University and a vice director of Osaka university Dental Hospital. Prior to his current position, he chaired the orthodontic departments of Okayama University. He received his dental degree, clinical training in orthodontics and doctoral degree on bone biology from Osaka University. He is a member of the Edward H. Angle Society of Orthodontists (East component) and has a Fellowship of Dental Surgery without Examination, Royal College of Surgeon of Edinburgh. His post-doctoral studies were in developmental biology in Helsinki, Finland. He is on the Editorial Board of European Journal of Orthodontics, Orthodontics and Craniofacial Research, Frontiers in Physiology, craniofacial and dental research.
We developed a new method of surface-based 3D cephalometry in humans by performing CT measurements and statistical comparisons of age- and sex- matched controls. Surface-based 3D cephalometry enables the objective immediate and long-term postoperative assessment of virtual planned and assisted craniofacial surgical procedures. It is expected to be a powerful tool for the planning, monitoring, and evaluation of craniofacial morphology and growth. We applied the wire fitting method to human CT data to determine the normative range for a Japanese population and also demonstrated the reproducibility of this method.
