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

John Whitworth has led endodontic teaching and clinical service at Newcastle Dental School and Hospital, UK for more than 20 years. An active teacher, specialist clinician, researcher and scholar, he is a Past President of the British Endodontic Society, served the International Endodontic Journal as Assistant Editor/Deputy Editor in Chief for 10 years, and served the European Society of Endodontology as Chair of its Education and Scholarship Committee and as an Executive Board member. He has published numerous research articles and contributed to a number of standard textbooks.

Dr Luitgard G Wiest, Dermatologist and international lecturer, Munich, Germany

Henrike Wilkes, born in 1977, grew up in a small town between the Ruhr area and the Rhineland, Germany. After graduating from high school, she discovered her passion for people and communication during an au pair stay in Rome. This was followed by a 6-year professional career in the hotel industry in various regions of Germany and in Australia at the time of the Olympic Games. She also completed her two degrees in business administration partly abroad – with a semester at the Università Luigi Bocconi in Milan, and an MBA degree at the University of Stellenbosch Business School, South Africa. During her more than 12 years as an executive and manager in a DAX company in the insurance industry, she specialized in the development of managers and was particularly committed to the interests of women in business. She founded an internal women's network and made films to get more women interested in insurance sales. As she was particularly fascinated by the combination of coaching and leadership, Henrike Wilkes completed various coaching courses to enable her to develop her employees effectively. In addition to traditional coaching methods, she makes use of the unusual, using horses for coaching and in leadership seminars to sharpen participants' senses for non-verbal communication, effectiveness, and authenticity. Her everyday experience with her large and very dominant mare, Swari, shows her that you can learn a lot about leadership from horses. If you would like to find out more about the author, please visit her website at www.henrike-wilkes.de. You can also contact her personally there.

Dr. Winston is a physiatrist, and conducts research on spasticity, spinal cord and nerve injury, and Complex Regional Pain Syndrome through the Victoria Peripheral Nerve and Spasticity Clinic he is also the Medical Director of Rehabilitation and Transitions at Island Health.

Dr Wiskott graduated in 1977. After three years of private practice and internship he earned a doctorate in dental medicine. He then transferred to the United States and in 1982 he received a Master of Science degree in periodontics from the University of Michigan. In 1989 he was awarded a Master of Science in Dentistry degree from About the authorthe University of Washington, specializing in fixed prosthodontics, and in 1998 a PhD degree in biomaterials. Dr Wiskott is the author of about 100 scholarly articles. He teaches and practices dentistry in Geneva, Switzerland.

Daniel Wismeijer graduated from the University of Nijmegen Dental School (1984) and received his PhD in 1996. Until 2006 he worked at the Amphia Teaching Hospital in Breda in the Oral Surgery and Maxillofacial Prosthodontics Department. In 1985 he started a general dental practice, which has been a referral practice for oral implantology since 1990. He was president of the Dutch Prosthodontic Association and the Dutch Association for Gnathology. He has been an ITI Fellow since 1993, a member of the ITI Board of Directors since 2013 and Chair of the ITI Education Committee since 2015. In 2006 he became Professor of Oral Implantology and Prosthetic Dentistry at ACTA Amsterdam where he was Chair and Head of the Department of Oral Implantology and Prosthetic Dentistry until 2020.

Since 1988, Siegbert Witkowskihas been working as Chief Dental Technician in the Department of Prosthodontics, University Hospital of Freiburg, School of Dentistry (Chair: Prof. Dr. B. Spies; Chair until 2016: Prof. Dr. Dr. h.c. J.R. Strub). He earned his diploma in Dental Technology from an apprenticeship program in Hannover, Germany. He did postgraduate studies and gained work experience at the following institutions: University of London, Royal Dental Hospital (1983-1984); University of Zürich, School of Dentistry (1984-1986); University of Southern California, School of Dentistry (1986-1988). Mr. Witkowski was certified as a Dental Technician (CDT) by the National Board of Certification of Dental Laboratory Technology (USA) in 1986. In 1991, he earned the diploma of the German Master Dental Technician from the master school in Freiburg, Germany. Siegbert Witkowski was co-editor and -founder of the German journal „Implantologie” [Implantology] (1993-2000). For the monthly journal „Quintessenz der Zahntechnik” [Quintessence Dental Technology] also by Quintessence Publishing (Berlin, Germany) he was serving as editorial board member (1997-2000), vice editor-in-chief (2004-2006) before being appointed as editor-in-chief (2007). In 2001 he was editorial chairman of the „Internationale Zahntechnik Magazin” [International Dental Technology Magazine] published by Flohr Publ. (Rottweil, Germany). He co-authored several book chapters, a textbook for dental students “Curriculum Prothetik” (1. ed. 1994 - 5. ed. 2021), a book on implant prosthodontics „Enossale orale Implantologie aus prosthetischer Sicht“ [Endosseous implantology from the prosthodontic point of view], published in 1996 by Quintessence Publishing and numerous journal articles. In recent past, he co-authored a book on dental CAD/CAM technology together with Prof. Dr. W. Att (Tufts University, Bosten, USA) and Prof. Dr. J.R. Strub (Emeritus, Freiburg) titled “Digital Workflow in Reconstructive Dentistry” published by Quintessence Publishing (2019). Siegbert Witkowski is a member of several national and international professional organizations.