Dr Sandra Tai received her graduate training in Orthodontics at the University of Minnesota, USA. She is currently a practicing Specialist in Orthodontics in Vancouver, Canada and Clinical Assistant Professor in Orthodontics at the University of British Columbia. She is also Adjunct Assistant Professor at the University of the Pacific in San Francisco. Dr Tai has been an Invisalign certified orthodontist since 2000 and is currently an Invisalign Diamond Plus Provider who has treated over 2,500 cases with Invisalign clear aligners. Dr Tai is a member of the Editorial Board of the Journal of Aligner Orthodontics and the author of the textbook “Clear Aligner Technique”. (Quintessence Publishing 2018) which has been translated into 11 languages - English, Spanish, French, Italian, German, Portuguese, Russian, Korean, Chinese, Turkish and Japanese. She is also a reviewer for the American Journal of Orthodontics and Dentofacial Orthopedics. She is a Diplomat of the American Board of Orthodontics, and a Fellow of the Royal College of Dentists of Canada. Dr Tai has lectured extensively on clear aligner technique all over the world. She is one of the pioneer testing doctors on Invisalign with Mandibular Advancement and Invisalign First appliance and is involved in several research projects on clear aligners.