Terry opened his orthodontic specialty practice in 1974. He and his partner, Olga Kats, have offices in Antioch, Grayslake and Gurnee, Illinois. Dr. Sellke relentlessly incorporates new technologies and systems enhancements that allows the practice to achieve exceptional results in shorter appointments, fewer appointments, and fewer months in treatment while running on time-every moment of every day. The result is a stress-free environment that is fun to go to day after day.
In 1983 Terry became a Diplomate of the American Board of Orthodontics.
Terry began teaching orthodontics and business principles at the University of Illinois at Chicago in 1970. He retired as a clinical professor, master clinician, co-clinic director, and master’s thesis advisor at UIC in 2006.
Terry continues to teach practice management (The Bottom Line® program) and clinical orthodontics to orthodontists and their staff worldwide, having given programs on six continents.
Terry founded The Bottom Line® programs in 1994 in response to management service organizations (MSOs). Since then he has conducted practice management programs sponsored by 3M Unitek for practicing orthodontists and orthodontic residents in North America, Central America, South America, Asia, Europe, Israel, Australia and New Zealand.
Terry currently has a number of prospective clinical studies under way in his private practice that his retirement from UIC has freed the time to accomplish.
Terry has published dozens of articles on orthodontics in professional journals worldwide. His text on the Bioprogressive Orthodontic Philosophy has been translated into four languages.
Terry is a member of orthodontic societies worldwide. He has served on the boards of dozens of dental, orthodontic, business, civic, and charitable groups.