1. Institute of Applied Synthetic Chemistry, TU Wien; Getreidemarkt 9/163/MC, 1060 Vienna Austria
2. Christian Doppler Laboratory for Photopolymers in Digital and Restorative Dentistry; Getreidemarkt 9/163/MC, 1060 Vienna Austria
3. Polymer Institute of the Slovakian Academy of Science; Dúbravská Cesta 9, 845 41 Bratislava Slovakia
4. Institute of Materials Science and Technology, TU Wien; Getreidemarkt 9, 1060 Vienna Austria
5. Ivoclar Vivadent AG; Bendererstrasse 2, 9494 Schaan Liechtenstein