Dimitrios Dionysopoulos is an Assistant Professor in the Department of Operative Dentistry, Faculty of Dentistry, School of Health Sciences, Aristotle University of Thessaloniki, Greece. He graduated from the Aristotle University of Thessaloniki, Faculty of Dentistry, with a degree in DDS, before completing his Postgraduate Program in Operative Dentistry. Later, he completed 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 Clinical Instructor in the Department of Operative Dentistry at the Aristotle University of Thessaloniki. He is also a member of several professional and scientific societies, including the Balkan Stomatological Society; International Association for Dental Research—I.A.D.R./Continental European Division—C.E.D); Hellenic Academy for Laser Dentistry; Society of Odostomatological Research; Hellenic Society of Preventive Dentistry; and Stomatological Society of Northern Greece. His primary areas of investigation include Operative Dentistry, Preventive Dentistry, Conservative Dentistry, Dental Materials, Lasers in Dentistry, and Restorative Dentistry.