During the period from 1 January 2007 to 1 January 2017, 138 dentists with a foreign dental degree (obtained outside the European Economic Area or Switzerland) who wanted to practice dentistry in the Netherlands have undertaken the assessment procedure to obtain a certificate of professional competence. The procedure comprises a Dutch language proficiency and communications test, followed by tests of competence specific to the dental profession. For 68 dentists (49%), no deficiencies in knowledge or skills were identified. They could register in the BIG-register [for healthcare professionals] for the supervisory period. For 49 (36%), the deficiencies could be eliminated with specific training. In the case of 21 dentists (15%), training was not possible. The number of dentists from this group who were enrolled in the BIG-register in 2017 was determined. On the reference date, 100 dentists (73%) were enrolled. Of the 49 dentists who were permitted to participate in a specific educational programme, 48 had started such a programme: 38 had completed it by 2017, 9 are still actively involved, and 1 stopped the programme. If they complete the programme, the number of dentists who have been enrolled in the BIG-register after [successfully] finishing the assessment procedure could rise to 115 (83%).