Dental degree, certificate in orthodontics and PhD from the University of Nijmegen and completed further training at the University of Oxford, United Kingdom.

Professor Emeritus and was Chairperson and Professor of the Department of Orthodontics and Cranio-facial Biology at Radboud University, Nijmegen, the Netherlands
Professor of Orthodontics at Universitas Indonesia in Jakarta (Indonesia)
Adjunct Professor at the University of Bern in Switzerland., Switzerland
Visiting professor at Wuhan University, China.

Past-President of the European Orthodontic Society.
Co-founder of Network for Erasmus Based European Orthodontic Programmes and was the President until June 2017.
Principal Lecturer of the Radboud University and Distinguished Teacher of the European Orthodontic Society
Louise Ada Jarabak Memorial International Teachers and Research Award
Editor-in-Chief of Orthodontics and Cranio-facial Research
2020 recipient of the WFO Honorary Membership