Dr. Derk Jan Jager received his Msc. in Dentistry at the University of Groningen, the Netherlands. In 2012 he earned a Ph.D in Medical Sciences from the University of Groningen under supervision of prof. dr. Marie-Charlotte Huysmans and prof dr. Arjan Vissink. Part of this work was done at King’s College London under supervision of prof. dr. Gordon Proctor.  Dr. Jager subsequently completed a three-year hospital-based clinical residency in Prosthodontics at the University Medical Center Groningen (supervision: prof. dr. Marco Cune) resulting in a membership of the Royal College of Surgeons of Edinburgh. Furthermore, he earned his Board Certification in Maxillofacial Prosthodontics by the Dutch Society of Gnathology and Prosthodontics in 2016. Currently, he is president of the Salivary Research Group of the International Association for Dental Research (IADR) and board member of the Dutch Society for Gnathology and Prosthodontics (NVGPT).

Focus of research

- Sjögren's syndrome
- Sialendoscopy
- Dental implants in dry mouth patients
- Value Based Healthcare in maxillofacial prosthodontics
- HPV related oropharynx carcinoma: the role of dentists in detection and prevention
- Relieve of dry mouth complaints and enhancement of oral lubrication