1. Department of Oral Pathology, Faculty of Dental Medicine, Titu Maiorescu University of Bucharest, Bucharest 031593, Romania
2. Department of Oral Pathology, Faculty of Dentistry, Carol Davila University of Medicine and Pharmacy, Bucharest 050037, Romania
3. Department of Materials Science and Engineering, Polytechnic University of Bucharest, Bucharest 060042, Romania
4. Department of Medical and Surgical Emergencies in Dental Medicine, Anesthesia and Sedation, Faculty of Dental Medicine, Titu Maiorescu University of Bucharest, Bucharest 031593, Romania