1. Pascal Magne, PhD, Division of Restorative Sciences, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, CA
2. Jack Goldberg, Graduate Student, Advanced Prosthodontics, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, CA. Private Practice Mexico City, Mexico
3. Daniel Edelhoff, Prof. Dr. med dent., Department of Prosthodontics, Dental School of Ludwig-Maximilian University, Munich, Germany
4. Jan-Frederik Güth, PD Dr. med. dent. Department of Prosthodontics, Dental School of Ludwig-Maximilian University, Munich, Germany