Dhru graduated from the University of Sheffield in 2003 and then became an associate practitioner where he further developed his skills and gained experience in the general dental care of patients. Dhru later completed various hospital posts, including working as Senior House Officer in the department of restorative dentistry at the Royal London Dental Hospital, Senior House Officer and specialty doctor in the department of Oral and Maxillofacial surgery at the Northwest London Hospitals. Dhru was also a member of the Faculty of Dental Surgery of the Royal College of Surgeons of England and completed a Master of Clinical Dentistry degree in Periodontics at King’s College, London. He later founded Dentinaltubules.com which has become one of the largest online resources for growth and learning in the UK and the world, and also the Tubules Foundation, a charity for education of young children worldwide.