Barry K.B Berkovitz, BDS, MSc, PhD, FDS (Eng), Emeritus Reader, Anatomy and Human Sciences, Biomedical and Health Sciences, King’s College London, UK and Visiting Professor, Oman Dental College, Oman, G. R. Holland, BSc, BDS, PhD, CERT ENDO, Professor, Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry and Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI, USA and Bernard J. Moxham, BSc, BDS, PhD, FHEA, FRSB, Hon FAS, FSAE, Emeritus Professor of Anatomy, Cardiff School of Biosciences, Cardiff University, Cardiff, UK