1. Department of Operative Dentistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
2. Unit of Endodontics, Department of Medical Biotechnologies, Periodontology, Restorative and Paediatric Dentistry, University of Siena, 53100 Siena, Italy
3. Department of Complete Denture, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
4. Department of Endodontology, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
5. Faculty of Dentistry, Oral and Craniofacial Sciences, King’s College London, London SE19RT, UK
6. Peninsula Dental School, University of Plymouth, Plymouth PL6 8BT, UK