The BOS MOrth Cases Prize 2009.

This paper describes the orthodontic treatment of two cases that were successfully entered for the 2009 MOrth Cases Prize. The first case describes the treatment of a class II division 1 malocclusion with increased vertical proportions that was treated with upper and lower self-ligating appliances and headgear for anchorage support. The second case describes the use of a Clark Twin-Block appliance, with headgear, followed by non-extraction upper and lower fixed appliances to treat a class II division 1 malocclusion with an overjet of 14 mm.