1. Emeritus Professor/Consultant in Dental Prosthetics and Materials Science, School of Dentistry Queen's University Belfast and The Royal Group of Hospitals, UK
2. Lecturer in Restorative Dentistry, School of Dentistry Queen's University Belfast and The Royal Group of Hospitals, UK
3. Senior lecturer/Consultant in Restorative Dentistry (retired), School of Dentistry Queen's University Belfast and The Royal Group of Hospitals, UK