1. Assistant Professor, Department of Conservative Dentistry and Endodontics; Iuliu Hatieganu University of Medicine and Pharmacy; Cluj-Napoca Romania
2. Professor, Department of Prosthodontics and Dental Materials; Iuliu Hatieganu University of Medicine and Pharmacy; Romania
3. Professor, Department of Preventive Dentistry; Iuliu Hatieganu University of Medicine and Pharmacy; Cluj-Napoca Romania
4. Researcher in Chemistry, Department of Polymeric Composites; Raluca Ripan Institute of Research in Chemistry, Babes Bolyai University; Cluj-Napoca Romania
5. Assistant Professor, Department of Conservative Dentistry and Endodontics; Iuliu Hat6ieganu University of Medicine and Pharmacy; Cluj-Napoca Romania
6. Assistant Professor, Department of Optics, Faculty of Science; University of Granada; Campus de Fuentenueva s/n 18071 Granada Spain