1. StR and Honorary Clinical Teacher in Restorative Dentistry, Charles Clifford Dental Hospital, 76 Wellesley Road, Sheffield, S10 2SZ
2. Specialist and Clinical Lecturer in Periodontics, Kulliyyah of Dentistry, Kuantan, The International Islamic University, Malaysia, 25200
3. Professor and Consultant in Restorative Dentistry, Academic Unit of Restorative Dentistry, School of Clinical Dentistry, Claremont Crescent, The University of Sheffield, S10 2TA, UK