DR. THITI SIRIKRAI, known by his patients as Dr. Ken, obtained his dental degree from Chulalongkorn University in 1996, Certificate in Clinical Orthodontics and Master of Science in Orthodontics with Distinction from Saint Louis University, Missouri, USA in 2000. He conducted an original research on the topics of A Comparative Evaluation of Frictional Resistances in Low-Nickel Orthodontic Appliances for his Master Thesis and had given a poster presentation in the Annual Meeting of the International Association for Dental Research in Washington DC in the year 2000. Dr.Sirikrai also achieved a Certificate of Lingual Orthodontics from Asian Gorman Institute in Taipei, Taiwan in 2001. Since graduation, he has been a guest lecturer in Biomechanics and Invisalign Technology for Postgraduate Orthodontic students at Chulalongkorn University and Mahidol University, and has published his original article in the Journal of the Thai Association of Orthodontists.

DR. THITI SIRIKRAI is a member of the American Association of Orthodontists, World Federation of Orthodontists, Orthodontic Education and Research Foundation, Thai Association of Orthodontists, and Siam Lingual Orthodontics Society. In 2002, he became an accredited Invisalign provider and then began his first Invisalign case that year. Since 2000, Dr.Sirikrai has been practicing various modalities of orthodontic treatment including Lingual Orthodontics, Self-Ligating Orthodontic appliances, Functional appliances, and to date, has done over 700 Invisalign cases. From 2003-2006, he has been involved with Invisalign Technology distribution in Thailand and has organized Invisalign Certification courses for Thai orthodontists in April 2003 and March 2005 accordingly. In 2007, he was American Board certified and became a diplomate of ABO until 2012. In 2007, Dr.Sirikrai was appointed an Invisalign lecturer for the Southeast Asia Region and has delivered Invisalign Certification Programs in the Philippines and Vietnam. In 2011, Dr. Sirikrai, one and only doctor from Thailand, was invited to join the lecturer team for 2011 Asia – Pacific Invisalign Forum in Phuket, Thailand. Now Dr.Sirikrai serves as Associate Clinical Director at Thantakit International Dental Center, his family own private practice since 1945. He is currently an Invisalign Platinum Elite Provider.

  • 1996: Doctor of Dental Surgery, Chulalongkorn University
  • 1999: Certificate in Clinical Orthodontics, Saint Louis University, Missouri, USA
  • 2000: Master of Science in Dentistry (Orthodontics), Saint Louis University, Missouri, USA
  • 2001: Certificate in Lingual Orthodontics, Asian Gorman Institute, Taiwan
  • 2002: Invisalign Accreditation, Hong Kong
  • 2007-2012: Diplomate of the American Board of Orthodontics
  • 2002: Certified Invisalign orthodontist
  • 2003: Original Article Publication in the Journal of the Thai Association of Orthodontists
  • 2004-Present: Guest Lecturer on Invisalign and Biomechanics, Post-graduate Orthodontic Program, Chulalongkorn and Mahidol University
  • 2003-2006: Invisalign Technology Distributor in Thailand, in cooperation with Invisalign Australia and
  • 2006: Awarded “Invisalign Platinum Provider” from Invisalign USA
  • 2007-Present: Invisalign lecturer for the Southeast Asia Region
  • 2009: Awarded “Invisalign Platinum Elite Provider” from Invisalign USA
  • World Federation of Orthodontists
  • American Association of Orthodontists
  • American Board of Orthodontics (2007-2012)
  • Orthodontic Education and Research Foundation, Saint Louis, USA
  • Thai Association of Orthodontists
  • Siam Association of Lingual Orthodontics
  • Thai Society for Laser Dentistry
  • Thai Dental Council
  • Thai Dental Association under Royal Patronage
  • Thai Private Dentist Association

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