Comparison of the headgear activator and Herbst appliance—effects and post-treatment changes
Kok Leong Dale Phan, Margareta Bendeus, Urban Hägg, Ken Hansen, A. Bakr M. Rabie Eur J Orthod (2006) 28 (6): 594-604

Poster presentation at 81st Congress of European Orthodontic Society , 2005, Amsterdam, The Netherland.
It was shortlisted for WJB Houston Research Awards Competition.

Poster presentation at 81st Congress of European Orthodontic Society, 2005, Amsterdam, The Netherland.

Poster presentation at the 5th Asian-Pacific Orthodontic Conference, 2005, Beijing China.

Oral presentation at the 18th Annual Scientific Meeting of the Faculty of Dentistry, 2004. Class II correction in Herbst and van Beek Headgear Activator – A Comparison of Treatment Changes