1. Department of Chemistry, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey
2. Department of Polymer Engineering, Faculty of Engineering, Yalova University, 77100 Yalova, Turkey
3. Department of Chemistry, Yildiz Technical University, 34210 Davutpasa, Istanbul, Turkey
4. Ivoclar Vivadent AG, Bendererstrasse 2, FL-9494 Schaan, Liechtenstein