• 

  Katherine O'Donnell

  Clinical Lecturer & Honorary Consultant in Paediatric Dentistry, University of Leeds
• 

  Hooria Olsen

  Dental Surgeon, British Association of Private Dentistry
• 

  Christopher Orr

  Director Of Education, Advanced Dental Seminars
• 

  Barry Oulton

  Dentist, Business Owner, Lecturer, Coach and Mentor, The Confident Dentist Academy Ltd