Dimitrios Dionysopoulos

Dental bleaching is now a widely used technique in everyday clinical dental practice due to the growing demand from patients to improve their aesthetic appearance. A large number of methods and techniques for tooth whitening have been described in the international literature. The bleaching agents used today, whether applied in-office or at home, contain almost exclusively carbamide peroxide ([CO(NH₂)₂]H₂O₂) or hydrogen peroxide (H₂O₂) as the active ingredient. These active agents alter the structure and polarity of chromogenic molecules, thereby restoring the color of discolored teeth toward normal. In recent years, significant changes have occurred in clinical protocols for the use of bleaching agents. Moreover, concerns have been raised about the biological side effects of hydrogen peroxide and there is considerable discussion regarding limiting its use. In this context, an extensive analysis will be presented of current evidence on modern bleaching products and their clinical use, the application of adjunctive methods such as lasers, and the management of potential adverse effects. The emergence of new peroxide-free bleaching agents will also be discussed, along with research data on their effectiveness. Keeping clinicians informed about the latest developments in tooth bleaching is essential to align with international guidelines, improve clinical procedures, and optimize treatment outcomes for the benefit of patients.

Dr. Dimitrios Dionysopoulos is Associate Professor in the Department of Operative Dentistry of Aristotle University of Thessaloniki. He was born in Thessaloniki and was graduated from Aristotle University of Thessaloniki, Faculty of Dentistry with the degree of DDS and acquired his MSc in Operative Dentistry. Later he received his PhD degree entitled “In vitro comparative study on cariostatic effect of contemporary fluoride-releasing materials for conservative restorations”. He has carried out a wide research and has many publications (over 100) in scientific journals (total impact factor > 200). He is an editorial member and reviewer in various international journals, editor-in-chief in the Stoma journal, associate editor in the Restorative Dentistry & Endodontics and member of professional and scientific societies. He is a dental clinician and owner of private dental practice. His primary areas of research include Operative Dentistry, Preventive Dentistry, Cariology, Dental Materials, Lasers in Dentistry and Restorative Dentistry.