1. Heike Jung, DDS, DMD, private practice, Marktredwitz, Germany
2. Karl-Heinz Friedl, DDS, DMD, PhD, adjunct associate professor, Department of Operative Dentistry and Periodontology, University Clinics, Regensburg, Germany and Private Practice, Regensburg, Germany
3. Karl-Anton Hiller, PhD, mathematician, Department of Operative Dentistry and Periodontology, University Clinics, Regensburg, Germany
4. Henning Furch, DDS, private practice, Regensburg, Germany
5. Stefan Bernhart, DDS, Department of Prosthetic Dentistry, University Clinics, Regensburg, Germany
6. Gottfried Schmalz, DDS, DMD, PhD, professor and chairman, Department of Operative Dentistry and Periodontology, University Clinics, Regensburg, Germany