Mark qualified as a dentist in 1998 from Queen’s University Belfast. Between 1999 and 2001 he gained further experience in oral surgery, restorative dentistry and paediatric dentistry while a Senior House Officer at the School of Dentistry in Belfast. He then entered a full-time three year orthodontic training programme (Orthodontic Registrar) at Newcastle Dental Hospital, qualifying as an orthodontist in 2004.
He is a registered orthodontic specialist with the General Dental Council and is a member of the British Orthodontic Society and the Orthodontic Society of Ireland. Mark also spends one day a fortnight at the School of Dentistry in Belfast where he treats patients requiring surgical-orthodontic treatment.