QDT 2017 celebrates its 40th anniversary in style with beautifully presented original articles on new materials and techniques for achieving the utmost esthetic restorative results. This year's focus is on challenging esthetic cases, treatment planning for various restorative options, new techniques using zirconia, and taking CAD/CAM beyond its limits. The State of the Art article presents the RAW digital workflow, and the Biomaterials Update features the Adhesive Restorative Complex concept. QDT's new Masterclass article addresses the challenge of restoring a single central incisor. And the Masterpiece article this issue, presented by Naoki Hayashi, is a visual display of dental artistry. 1,000+ Illustrations.

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.

"Editorial STATE OF THE ART-RAW: A Digital Workflow Florin Cofar, Ioan Cofar, Lorant Stumpf, Ioana Popp, Alejandro Pineda, Eric Van Dooren The "Slim Concept" for Ideal Peri-Implant Soft Tissues Iñaki Gamborena, Yoshihiro Sasaki, Markus B. Blatz Altering Gingival Levels by Intrasulcular Prosthetic Design: A Model-Guided and Multidisciplinary Case Report Eric Van Dooren, Leonardo Bocabella, Cristiano Soares, Willy Clavijo, Victor Clavijo BIOMATERIALS UPDATE-The Adhesive Restorative Complex (ARC) Concept Neimar Sartori, Reham Alsamman, Leonardo Bocabella, Victor Clavijo, Jin-Ho Phark, Maria Manuela Lopes, Sillas Duarte, Jr Decision-Making Process for Restoring Single Implants Victor Clavijo, Alvaro Blasi The Biodigital Alveolar Model: An Alternative for a Predictable Esthetic Outcome with Ultrathin Porcelain Veneers Paulo Monteiro, Pedro Brito, João Rua, Sillas Duarte, Jr, José João Mendes Achieving Esthetics, Function, and Retrievability with Implant-Supported Monolithic Zirconia Restorations While Minimizing Surgical Interventions Anas Aloum, Omar Aloum, Ahmad Al-Jazairi, Salah Bagdadi, Jamal Ghafari, Winston Chee Masterpiece Naoki Hayashi The Concept of an Angulated Screw Channel System Luc Rutten, Patrick Rutten, Stefan Holst Implant-Supported Zirconia Full-Mouth Rehabilitations: Key Factors Alvaro Blasi, Aram D. Torosian, Somkiat Aimplee, Sung Bin Im, Amy M. Camba, Gerard J. Chiche MASTERCLASS-The Challenge of a Single Central Incisor: Mastering Optical Properties with Zirconia-Based Crowns Leonardo Bocabella Balancing Surgical and Prosthetic Procedures to Restore the Severely Resorbed Esthetic Zone Ivan Contreras Molina, Kyle Stanley, Gil Contreras Molina Clinical Application of Anterior Single-Retainer Zirconia Resin-Bonded Fixed Partial Dentures Kazunori Otani, Naoto Yuasa Sequential Implant Treatment for a Challenging Esthetic Case Masayuki Okawa, Masana Suzuki, Seiko Min, Shigeo Kataoka, Takahiro Aoki CAD/CAM-Guided Patterns for Full-Mouth Reconstruction Using Lithium Disilicate Pressed Ceramics in a Patient with Amelogenesis Imperfecta Orit Shakartsi-Amar, Eldad Sharon, Mordechai Lipovetsky Adler, Ami Smidt"