Volker Weber, MDT graduated as Certified Dental Technician in 1987. From 1988 to 2009, he worked closely with the Department of Prosthodontics of RWTH Aachen University (Director: Professor Hubertus Spiekermann), especially in the field of oral implantology with special emphasis on the use of different implant systems. This cooperation intensified when he joined the Impladent dental laboratory at Aachen in 1992. In 1994 he passed the examination for Master Dental Technician in Cologne. Since 2005 he has been a consultant on implant-supported restorations for various institutions and has published articles on implant-supported superstructures. Since 2009 he has been continuing his cooperation with the Department of Prosthodontics, Oral Implantology and Biomaterials of RWTH Aachen University (Director: Professor Stefan Wolfart).

Roberto L. Weinstein graduated with a degree in medicine and surgery in 1972 and received his DDS in 1974 from the University of Milan. He then became a researcher at the same university and an associate professor at the University of Modena. From 1990 to 2017, he served as a full professor and chairman of periodontology at the University of Milan. He is the director of the Department of Biomedical, Surgical and Dental Sciences and the former Dean of Dental Faculty. Dr Weinstein is also a past president of SIdP and is currently the director of Humanitas Dental Center, ICH, in Rozzano, Italy.

Karl H. Wesker is an artist and an illustrator. He has worked for many years on the visualization and didactic presentation of complex structures. He has developed new methods that produce highly detailed and yet esthetically fascinating images of human anatomy. These methods form the foundation of the three-volume atlas of anatomy Prometheus, which is being published by Thieme and for which he has created most of the illustrations.

Dr. Peter Wetselaar, MSc, PhD, dentist and specialist in functional diagnostics and therapy of CMD and tooth wear, Chair in the Department and Clinic of General Dentistry, Academic Center for Dental Medicine Amsterdam (ACTA), Amsterdam/Netherlands