Dr. Dimitrios Dionysopoulos (DDS, MSc, PhD, Research Associate) was born in Thessaloniki. He was graduated from Aristotle University of Thessaloniki, Faculty of Dentistry with the degree of DDS, completed his Post-graduate Program in Operative Dentistry. Later he received his Ph.D degree entitled “In vitro comparative study on cariostatic effect of contemporary fluoride-releasing materials for conservative restorations” in Operative Dentistry from Aristotle University of Thessaloniki. After that, he became a Research Associate and a clinical instructor at the Department of Operative Dentistry of Aristotle University of Thessaloniki. He carried out a wide research and has many publications in SCI covered beside some local and international journals. He is an editorial member and reviewer in various international journals and member of professional and scientific societies. His primary areas of investigation include Operative Dentistry, Preventive Dentistry, Conservative Dentistry, Dental Materials, Fluoride, Lasers in Dentistry and Adhesive Dentistry.