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Meet our doctors

Dr Pieter van Heerden

BChD(Pret), MDent(Orth), MChD(Orth), Specialist in Orthodontics GDC 66417, fellow of the World Federation of Orthodontists

Originally from South Africa, Dr Pieter van Heerden studied orthodontics at the University of Pretoria. After qualifying as an orthodontist in 1985, he pursued an MChD which he successfully gained in 1992. After completing his studies, Dr van Heerden moved to the UK and began working as an associate in St Albans. After six years of service in the St Albans clinic he became practice principal before founding Harpenden Orthodontics in 1999. 

Dr van Heerden is renowned internationally for his work with the Damon brace system. A Fellow of the World Federation of Orthodontics, he trained with Dr Dwight Damon, the inventor of the Damon system. Dr van Heerden is also a well known international speaker, having lectured on the system worldwide. 

In his spare time, Dr van Heerden can be found in the skies – he is an accomplished private pilot and is married with three children. 

Dr van Heerden is available for appointments every second Monday 8:00am - 5:15pm.

Dr Pieter van Heerden

Dr Lorinda Pietersen

BChD MOrth RCS(Edin) GDC 66844 (Registered: 08/10/1991)
Fellow of the World Federation of Orthodontists

Dr Lorinda Pietersen qualified as a general dentist in 1991 from the University of Pretoria in South Africa. She moved to the UK in 1992 and worked as an associate dentist in Bishop’s Stortford. Dr Pietersen has always had a special interest in orthodontics and specialised in the field at Guys Hospital in London and Adden brookes Hospital in Cambridge. She received her Masters in Orthodontics from the Royal College of Surgeons of Edinburgh in 2001.

Dr Pietersen is co-principal of St Albans Orthodontics. She founded Bishop’s Stortford Orthodontic Practice in 1996 and Cambridge Orthodontic Practice in 2003. She is a Fellow of the World Federation of Orthodontics and also a member of the British Orthodontic Society.

Dr Pietersen is married to an orthodontist and they have three children together.

Dr Pietersen is available for appointments every second Tuesday 8:00am – 2:00pm and every Thursday 8:00am – 1:00pm.

Dr Lorinda Pietersen

Dr Pieter (Bob) Esterhuysen

BChD. BMedSci. Dip.Odont(ROrth) GDC 70507 (Registered: 19/07/1987)

Dr Pieter (Bob) Esterhuysen studied at the University of Pretoria, South Africa where he achieved his research degree in medical science in 1991 and his general dentist qualification in 1995 before completing a Postgraduate Diploma in Orthodontics. Married with two children, Dr Esterhuysen joined St Albans Orthodontics in 2001 where he has a special interest in orthodontics. He also works at our partner practice, Harpenden Orthodontics.

Dr Esterhuysen is available for appointments Wednesdays 8:00am - 5:15pm, occasional Thursdays 1:30pm – 5:15pm and occasional Fridays 8:00am - 4:00pm.

Dr Pieter (Bob) Esterhuysen

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The next steps to a great smile