1. Doctoral School of Biomedical Sciences, University of Oradea, 410087 Oradea, Romania
2. Department of Preclinical Disciplines, Faculty of Medicine and Pharmacy, University of Oradea, 410087 Oradea, Romania
3. Unit of Periodontology, Endodontic and Restorative Dentistry, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
4. Faculty of Medicine and Pharmacy, University of Oradea, 410087 Oradea, Romania