Dr Isaac Chong graduate from Orthodontic Mini-Residency in Clear Aligner Technique Dr Isaac Chong Graduating. Isaac has taken different modules of this course in Hongkong, Kuala Lumpur and finally completing this in Taipei. Presentation of course completion certificate by course director, Dr Sandra Tai, Orthodontic Mini Residency in Clear Aligner Technique. She is the author of the best seller textbook, Clear Aligner Technique. With fellow colleagues, attending module 3 of Dr Sandra Tai course in Othodontic Mini Residency in Clear Aligner Technique, Feb. 21-22, Kuala Lumpur. With Dr Sandra Tai, Course Director, Orthodontic Mini Residency in Clear Aligner Technique. Author of the best seller textbook, Clear Aligner technique.