Andreas Nolte completed his training as a dental technician in Lübbecke, Germany, and subsequently worked in various laboratories. After traveling domestically and abroad in 2001 and 2002, he founded his own company, Enamelum et Dentinum, in Münster, Germany, in 2002. Since 2004, he has been operating his own laboratory and training center in the heart of Münster. His passion is primarily focused on ceramic restorations on natural teeth and implants. He collaborates closely with the dental industry as a developer, which has led to the creation of, among other things, the Color and Texture System DD Contrast. Andreas Nolte is the author of several articles published in Quintessenz Zahntechnik, Teamwork, Dental Labor, and Dental Dialogue. In addition, he has been active as an international speaker since 2000. He is a member of the advisory board for Quintessenz Zahntechnik and Dental Dialogue. Furthermore, he has been a member of Group 65 for several years.

Dr John Nusstein received his DDS from the University of Illinois at Chicago College of Dentistry in 1987. He served 12 years in the U.S. Air Force and completed his endodontic training at The Ohio State University in 1995, earning a certificate in endodontics and an MS for research involving intraosseous anesthesia. Dr Nusstein has been a Diplomate of the American Board of Endodontics since 1999. He became a full-time educator at The Ohio State University College of Dentistry in 2000 and is now a tenured professor, was appointed Chair of the Division of Endodontics in 2006, and holds the William J. Meyers Endowed Chair in Endodontics. He has authored/coauthored over 100 scientific articles and 9 chapters in leading endodontic textbooks. His focus of research is local anesthesia and pain control and ultrasonic irrigation.