Bernd Kordaß, DDS, PhD a, b, ⁎ , Christian Gärtner, DDS b, Andreas Söhnel, DDS b, Alexander Bisler, Dipl Inform c, Gerrit Voß, Dipl Inform d, Ulrich Bockholt, Dipl Math d, Stefan Seipel, Dipl Inform e
a Department of Dental Education and Community Dentistry, Ernst Moritz Arndt University, Rotgerberstrasse 8, D-17487 Greifswald, Germany
b Policlinic of Prosthetic Dentistry and Dental Materials, Ernst Moritz Arndt University, Rotgerberstrasse 8, D-17487 Greifswald, Germany
c Fraunhofer Institute for Computer Graphics, Rundeturmstrasse 6, D-64283 Darmstadt, Germany
d Center for Advanced Media Technology, Nanyang Technological University, Nanyang Avenue, 639798, Singapore
e Department of Information Science, Uppsala University, Box 513, SE-75120 Uppsala, Sweden