Abstract
This paper describes the orthodontic treatment of two cases presented by the winner of the William Houston gold medal at the Membership in Orthodontics examination at the Royal College of Surgeons of Edinburgh and which also won the British Orthodontic Society (BOS) cases prize in 2013. The first case describes the management of a 20-year-old female patient with a Class II division 2 malocclusion complicated by moderate upper and severe lower arch crowding, increased overjet and overbite, a crossbite and centreline discrepancies. Treatment involved a combination of a transpalatal arch, temporary anchorage devices and fixed appliances. The second case describes the management of a 15-year-old male patient with a Class I malocclusion complicated by crossbites affecting the right buccal segment and UR2, an associated mandibular displacement forward and to the right, mild upper arch crowding and a centreline discrepancy. Treatment involved a combination of a quad-helix, headgear and fixed appliances.
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