1. Consultant in Restorative Dentistry, King's College Dental Hospital, Denmark Hill, London SE5 9RW, UK
2. Clinical Fellow in Dental Trauma, King's College Dental Hospital, Denmark Hill, London SE5 9RW, UK
3. Endodontic Specialist, King's College Dental Hospital, Denmark Hill, London SE5 9RW, UK
4. Consultant in Endodontics, King's College Dental Hospital, Denmark Hill, London SE5 9RW, UK