Paul Coulthard, BDS MFGDP(UK) MDS FDSRCS FDSRCS(OS) PhD, Dean for Dentistry and Director, Professor of Oral & Maxillofacial Surgery, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK, Keith Horner, BChD, MSc, PhD, FDSRCPS, FRCR, DDR, Professor of Oral and Maxillofacial Imaging, The University of Manchester; Honorary Consultant, Central Manchester and Manchester Children's University Hospitals NHS Trust, UK, Philip Sloan, BDS, PhD, FRCPath, FRSRCS, Consultant Histopathologist, Royal Victoria Infirmary, Newcastle upon Tyne; Honorary Professor, School of Dental Sciences, Newcastle University, UK and Elizabeth D. Theaker, BDS, BSc, MSc, MPhil, Senior Clinical Teaching Fellow in Oral Medicine; Senior Tutor for Undergraduate Dental Studies, The University of Manchester, UK