Dr Sandra Khong Tai is Clinical Assistant Professor in Orthodontics at the University of British Columbia, and Adjunct Clinical Assistant Professor at the University of the Pacific. Dr Tai is a Diplomate of the American Board of Orthodontics. Dr Tai completed her orthodontic training at the University of MInnesota. She has been an Invisalign certified orthodontist since 2000 who has treated 5,000+ cases. Dr Tai is the author of the textbook Clear Aligner Technique (Quintessence Publishing 2018). The first edition has been translated into 13 languages around the world. The second edition was launched in 2025. She has authored a chapter on Clear Aligner Treatment in the 7th edition of Graber’s Orthodontics (Elsevier 2023). She has also written a chapter for the Moyer’s 58th Craniofacial Growth Series (2022) on Deep Bite Treatment with Clear Aligners. She is a member of the Editorial Board of Seminars in Orthodontics and the Journal of Aligner Orthodontics, as well as the Clinical Advisory Council for the Journal of Clinical Orthodontics. She is a reviewer for several orthodontic journals and has published research papers on clear aligners. Dr Tai is a much sought after international speaker and lectures globally on clear aligner technique.