Derek Mahony is a Sydney based orthodontist who has spoken to thousands of practitioners about the benefits of interceptive orthodontic treatment. Early in his career Dr Mahony learned from leading clinicians the dramatic effect functional appliance therapy can afford patients in orthodontic treatment. He has been combining the fixed and functional appliance approach ever since. His lectures are based on the positive impact such a combined treatment approach has had on his orthodontic results and the benefits this philosophy provides in reducing extractions of teeth. After completing his Dental Degree at the University of Sydney Dr Mahony completed his Masters degree in orthodontics at the Eastman Dental Hospital, Institute of Dental Surgery, London, followed by a diploma in orthodontics at the Royal College of Surgeons, Edinburgh. Dr. Mahony has also passed the Royal College of Dentists in Canada post graduate examination in the field of orthodontics.