Volume 20, Issue 1 TABLE OF CONTENTS 8 20 16 FEATURES 8 Beware of the "Dreaded Triangle" When Treating Orthodontic Cases 24 DEPARTMENTS 6 Ortho Industry News 40 AGpO Membership News 44 AOS Membership News On the cover: Mr. Tom Chapman, CAE, a Dallas, TX native and Air Force veteran, will leave his Executive Director position after nearly 23 years in service to the American Orthodontic Society at the start of 2020. Dr. Allan Rotberg, AOS President, said that “Mr. Chapman has guided us successfully through much change during his two decades of service and we are very appreciative of his contributions to this Society and the dental community.” Mr. Chapman will remain available as a consultant to our organization for the foreseeable future. The AOS Board of Directors have chosen current Director of Continuing Education and Assistant Executive Director, Ms. Barbara Zuniga, CAP, OM of Mesquite, TX, to replace Mr. Chapman as AOS Executive Director. Cover photo courtesy of Kelley Parlier. 16 VektorPRO: A New Gentle, Effective & Efficient Treatment Solution for Class II Correction 20 From Class II to Class I in Mixed Dentition in Only Four Months 24 Part 1: Intuitive Cephalometrics: How to Glance and Glean What is Important 32 Case Study: Class II Correction Case Using Herbst & Twin Force Appliances 38 AGpO 2019 Annual Meeting Recap 42 AOS 2019 Annual Meeting Recap 46 One Final Song: Tom Chapman Retires as AOS Executive Director Follow us on these social channels: This peer-reviewed journal is published as the official publication of the American Orthodontic Society and the Academy of Gp Orthodontics. www.orthodontics.com Winter 2020 3