1. PhD Graduate Student, Department of Biomaterials, School of Dentistry, National and Kapodistrian University of Athens, Athens, Greece
2. Director, Dental Biomaterials Research and Development Chair, Associate Professor, Prosthetic Dental Sciences Department, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
3. Director, Dental and Biomaterials Research Group Dental School, “Charite” Medical University of Berlin, Germany
4. Professor and Director, Department of Biomaterials, School of Dentistry, National and Kapodistrian University of Athens, Athens, Greece
5. Assistant Professor, Department of Biomaterials, School of Dentistry, National and Kapodistrian University of Athens, Athens, Greece, and Consultant, Dental Biomaterials Research and Development Chair, King Saud University, Riyadh, Saudi Arabia