Dr Tay was previously Head of the Specialist Dental Centre of the Singapore Armed Forces, managing military primary and specialist clinic operations. Currently, Dr Tay is a part-time tutor at the Faculty of Dentistry. He is involved in the undergraduate clinical curriculums. Dr Tay continues to pursue his interest in scientific research. He has presented his research at both local and international conferences. His research areas include temporomandibular joint disorders, bruxism, dental trauma and oral health-related quality of life.