Dr. Michael DiTolla is a graduate of the University of the Pacific Arthur A. Dugoni School of Dentistry, and he is a fellow of the AGD. After working in private practice for 15 years, he became director of clinical education and research at Glidewell, where he gained an intimate knowledge of U.S. dentists’ crown & bridge habits. From 2006 to 2009, Dr. DiTolla led the clinical team at Glidewell that developed and brought BruxZir^® Zirconia to market. In 2011, he received the “Most Effective Dentist Educator” award in a nationwide survey of dentists. Four years later, he became the director of clinical affairs at Dentsply Sirona, and in 2017 he was named the vice president of clinical affairs and communications at AEGIS Communications. Dr. DiTolla has given over 1,000 lectures to dentists worldwide, and his online videos have been viewed more than 10 million times by clinicians.

Dr. Gordon Christensen is a practicing prosthodontist in Provo, Utah. He is director of Practical Clinical Courses and CEO of Clinicians Report. He is also a Diplomate of the American Board of Prosthodontics; Fellow and Diplomate of the ICOI; and a distinguished member of numerous professional organizations. Dr. Christensen and his wife Rella are cofounders of the nonprofit Gordon J. Christensen Clinicians Report^® (formerly CRA Newsletter).

Yehonatan Frandzel is an architect and designer based in Haifa, Israel. He is a graduate of Technion-Israel Institute of Technology, where he studied in the Faculty of Architecture and Town Planning. Yehonatan is head of Architectural Visualization, 3-D Modeling and Computer Rendering for Mochly-Eldar Architects, where he lends his extensive experience with the creation and detection of virtual imaging. Contact him at kaizer@gmail.com.

Dr. Gregg Helvey graduated from Georgetown University School of Dentistry in 1976. He is part of an elite group of dentists who are also skilled ceramists. This combination of experience as a dentist and laboratory technician has aided him in the development of unique restorative and laboratory procedures, many of which have been published in peer-reviewed journals. Dr. Helvey serves on the editorial board of Inside Dentistry^®, Compendium of Continuing Education in Dentistry and Inside Dental Technology. An AGD Master since 1997, he is an adjunct associate professor at Virginia Commonwealth University School of Dentistry and teaches in the AEGD residency program emphasizing all-ceramic restorations. Dr. Helvey continues to lecture nationally and internationally, and maintains a private practice in Middleburg, Virginia. Contact him at 540-687-5855, gregghelveydds.com or phident@gmail.com.

Dr. David Hornbrook graduated from UCLA School of Dentistry and currently practices in San Diego, California. A leading educator in esthetic dentistry, he has been a guest faculty member of the postgraduate programs in cosmetic dentistry at Baylor, Tufts, SUNY at Buffalo, UMKC and the UCLA Center of Cosmetic Dentistry. Dr. Hornbrook has also consulted with numerous manufacturers in product development and refinement, and is on the editorial board of many dental journals. He is a past editor of the Journal of the American Academy of Cosmetic Dentistry and an accredited member and Fellow of the AACD. Founder and past director of P.A.C.~live and the Hornbrook Group, Dr. Hornbrook continues to lecture internationally. Contact him at davidhornbrook.com.

Dr. Daniel Melker graduated from the Boston University School of Graduate Dentistry in 1975 with specialty training in periodontics. Since then, he has maintained a private practice in periodontics in Clearwater, Florida. Dr. Melker lectures at the University of Florida, UAB and LSU periodontic and prosthodontic graduate programs on the periodontic-restorative relationship. He also presents at the University of Houston and Baylor University. Dr. Melker has published several articles in national dental magazines, as well as The International Journal of Periodontics & Restorative Dentistry, and has twice been honored with the Florida Academy of Cosmetic Dentistry Gold Medal. Contact him at 727-725-0100.

Dr. Ellis “Skip” Neiburger graduated from the University of Illinois at Chicago College of Dentistry in 1968, where he did postgraduate work on pulp histology in the department of oral pathology. Dr. Neiburger currently practices general dentistry in Waukegan, Illinois. A former vice president of the American Association of Forensic Dentists, Dr. Neiburger has been the association’s journal editor since 1978. He also was publisher/editor for Dental Computer Newsletter (the journal that introduced computing to the dental field). Contact him at 847-244-0292 or eneiburger@comcast.net.