Dr Stephen Duncan completed his Masters qualification in 1991 and since then has been in Private Orthodontic Practice in Sydney. He has also been a  part-time tutor in the post-graduate training programme at The University of Sydney since 1992 and is currently the co-ordinating tutor for the Joint Orthodontic and Surgical Planning Sessions within the Discipline. He has used Skeletal Anchorage System extensively since 2004 in both surgical and non-surgical cases.