Orthodontics Faculty Vig/Williams Endowed Chair in Orthodontics Ching-Chang Ko, DDS, MS, PhD ko.367@osu.edu 614-688-3146 Assistant Professor Shin-Jung Hsieh, DDS, MS hsieh.388@osu.edu Professor & Research Program Director Do-Gyoon Kim, PhD kim.2508@osu.edu 614-247-8089 Professor Zongyang Sun, DDS, MS, MSD, PhD sun.254@osu.edu 614-247-7944 Dean & Professor Carroll Ann Trotman, BDS, MA, MS trotman.13@osu.edu 614-292-9755
