1. Department of Restorative Dentistry, School of Dentistry, Saint Joseph University, Beirut 1107 2180, Lebanon
2. Department of Pediatric Dentistry, Faculty of Dentistry, Saint Joseph University, Beirut 1107 2180, Lebanon
3. Department of Biomaterials and Bioengineering, INSERM UMR_S 1121, University of Strasbourg, 67000 Strasbourg, France
4. Dental Materials Laboratory, Academic Area of Dentistry, Autonomous University of Hidalgo State, San Agustín Tlaxiaca 42160, Mexico
5. Department of General Dentistry, Medical University of Lodz, 251 Pomorska St., 92-213 Lodz, Poland
6. Department of Clinical Sciences and Stomatology (DISCO), Polytechnic University of Marche, 60126 Ancona, Italy
7. Faculty of Medicine, Damascus University, Damascus 0100, Syria
8. Private Practice, 54290 Trier, Germany
9. Department of Endodontics and Conservative Dentistry, Faculty of Dental Medicine, University of Strasbourg, 67000 Strasbourg, France
10. Pôle de Médecine et Chirurgie Bucco-Dentaire, Hôpital Civil, Hôpitaux Universitaire de Strasbourg, 67000 Strasbourg, France