[Dissertations 25 years after the date 6. Orthognathic surgery]. / Proefschriften 25 jaar na dato 6. Kaakosteotomieën.

In 1979 a thesis on orthognathic surgery was published. Progress of research concerning the surgical orthodontic treatment of dento-facial deformities is discussed with emphasis on the stability of the results, the behavior of the tongue, the temporomandibular joint and the psycho-social aspects. Also some aspects of distraction osteogenesis are mentioned.