1. Division of Macromolecular Chemistry (Part of the CD-Laboratory for Digital and Restorative Dentistry); Institute of Applied Synthetic Chemistry, Vienna University of Technology; Getreidemarkt 9/163/MC Vienna A-1060 Austria
2. Department of Chemistry and Applied Biosciences; ETH (Swiss Federal Institute of Technology); Vladimir-Prelog-Weg 1 Zurich CH-8093 Switzerland
3. Institute of Materials Science and Technology; Vienna University of Technology; Getreidemarkt 9 Vienna A-1060 Austria
4. IVOCLAR VIVADENT AG (Part of the CD-Laboratory for Digital and Restorative Dentistry); Bendererstrasse 2 Schaan FL-9494 Liechtenstein