Professor Duggal obtained his dental degree and MDS in Paediatric Dentistry from India. He then immigrated to the United Kingdom and obtained his FDSRCS from the Royal College of Surgeons of England and his PhD from University of Leeds. He was appointed Professor and Chair of Child Dental Health at Leeds Dental Institute in 1999 where he oversees a large postgraduate programme in Paediatric Dentistry which has international acclaim.

Professor Duggal has published over 130 research papers in international journals and is author of "Restorative Techniques in Paediatric Dentistry, which has been published in 7 languages and has sold over 16,000 copies worldwide. He is also a coauthor of a textbook on dental traumatology and has co-edited "Paediatric Dentistry" by Oxford, now in its 4th edition, and more recently "Paediatric Dentistry at a Glance", published by Blackwell Willey.

He has administered research grants totalling over 7 million pounds and is an internationally recognised researcher and clinician with main research interest in Cariology and Translation Research in Clinical Paediatric Dentistry, including dental traumatology.

Apart from Paediatric Dentistry his main interest is playing and watching cricket. Any time spare from work and family is devoted to this important activity.