Theodor Lambrianidis is Professor of Endodontics at the Dental School, Aristotle University of Thessaloniki (AUTH), Greece. He graduated from AUTH Dental School in 1976 and then completed postgraduate studies at the Oral Surgery Department, Queen Mary's Hospital, London and at King's College Hospital Dental School, London, UK. He completed his PhD studies in 1981 at AUTH Dental School. Dr. Lambrianidis became an Assistant Professor at AUTH in 1993, an Associate Professor in 1999, and Full Professor in 2006. Since 1980 he has also held a private practice specializing exclusively in endodontics. He was elected vice - president and president of the Hellenic Endodontic Society. Professor Lambrianidis has served on the Editorial Board and review panels for numerous scientific and endodontic journals and was also appointed as Editor in chief of "Endodologia", the official journal of the Hellenic Endodontic Society. He is a regular lecturer in national and international congresses and meetings, and has published more than 100 papers in peer-reviewed journals, including 70 in international journals. He is also the sole author or co-author of five previous books in endodontics.