Georgios Tsakos is Professor in Dental Public Health at UCL and Honorary Consultant in Dental Public Health with the National Health Service and with the Department of Health and Social Care (Office for Health Improvement and Disparities). He is also Adjunct Professor at the Faculty of the School of Dental Medicine, University of Pennsylvania. He has served as President of the European Association of Dental Public Health, President of the Behavioural Epidemiological and Health Services Research group in the International Association of Dental Research (IADR), and as Chair of the Platform for Better Oral Health in Europe.

He contributes to the work of the World Health Organisation (the UCL Dental Public Health Group is a WHO Collaborating Centre of Oral Health Inequalities and Public Health), and in World Dental Federation (FDI) programmes. In 2023, he received the IADR Distinguished Scientist award for Behavioral, Epidemiologic and Health Services Research. His research is on: Oral health inequalities and the social determinants of health; Subjective outcomes of oral health and quality of life; Oral health and healthy ageing; Associations between oral and general health.