1. University of Mostar, Faculty of Medicine Zrinskog Frankopana 34 88000 MOSTAR BOSNIA-HERCEGOVINA
2. University of Trieste, Department of Medical, Surgical and Health Sciences, Dental Biomaterials Laboratory Piazza dell'Ospitale 1 34125 TRIESTE ITALY
3. Elettra Sincrotrone Research Center NanoInnovation Laboratory Strada Statale 14 34149 BASOVIZZA ITALY
4. University of Rijeka, Faculty of Medicine, Department of Orthodontics Kresimirova 40 51000 RIJEKA CROATIA
5. J. J. Strossmayer University of Osijek, Faculty of Dental Medicine and Health, Department of Dentistry Crkvena 21 31000 OSIJEK CROATIA