QDT 20212022 introduces new digital concepts and novel treatment strategies that are sure to inspire the laboratory technician and restorative clinician. Original articles describe the digital alveolar support technique, digital impression strategies for more predictable final restorations, a modified All-on-4 concept that retains teeth for natural dentofacial esthetics, and a new crown-lengthening approach for optimal soft tissue healing. "Biomaterials Update" explores gradient multilayered zirconia for expanding the indication of monolithic zirconia to the esthetic zone. These are but a sampling of the information-packed articles in this beautifully produced annual publication.

Dr. Sillas Duarte, Jr., is associate professor and Chair, Division of Restorative Sciences, Ostrow School of Dentistry University of Southern California, Los Angeles, California. Dr. Duarte is the Director of the Advanced Program in Operative Dentistry at USC and the Editor-in-Chief of Quintessence of Dental Technology (QDT). Dr. Duarte has served on the editorial boards of other journals, and has lectured and performed hands-on courses nationally and internationally on esthetic dentistry and adhesion. He has been involved in teaching cutting-edge clinical techniques and technologies related to aesthetic and adhesive dentistry. Dr. Duarte's scientific work has been supported by governmental and commercial grants and he serves as a consultant for several manufacturers. His research and clinical work focus on bonding to dental structures, composites, and ceramics.

Andrés Acevedo Anas Aloum Gustavo Ávila-Ortiz Markus B. Blatz Leonardo Bocabella Anabell Bologna Erika Clavijo Victor Clavijo Willy Clavijo Florin Cofar Sillas Duarte, Jr Aiham Farah Iñaki Gamborena Oscar Gonzalez-Martín Rafael Laplana Manuel Martín-Luque Mariano Maurizi Paulo Fernando Mesquita de Carvalho Ivan Contreras Molina Masayuki Okawa Jin-Ho Phark Ricardo Recena Yoshihiro Sasaki Akikazu Shinya Eric Van Dooren Shogo Yamamoto