1. Academic Clinical Fellow/Specialty Registrar in Restorative Dentistry, Restorative Dentistry Department, Newcastle Dental Hospital, Richardson Road, Newcastle Upon Tyne, NE4 2AZ, UK
2. General Professional Trainee, Restorative Dentistry Department, Newcastle Dental Hospital, Richardson Road, Newcastle Upon Tyne, NE4 2AZ, UK
3. Consultant in Restorative Dentistry, Restorative Dentistry Department, Newcastle Dental Hospital, Richardson Road, Newcastle Upon Tyne, NE4 2AZ, UK