Dimitris Malamos, DDS, MSc, PhD and Dip. O.M is an Oral Medicine Specialist at the Oral Medicine Clinic of the National Organization for the Provision of Health Services, 1st Health Region, Athens, Greece. Crispian Scully, CBE, DSc, DChD, DMed (HC), Dhc (Multi), MD, PhD, PhD (HC), FMedSci, MDS, MRCS, BSc, FDSRCS, FDSRCPS, FFDRCSI, FDSRCSEd FRCPath, FHEA was formerly Co-Director of the WHO Collaborating Centre for Oral Health-General Health and Emeritus Professor at University College London, UK.