Management of a Class II deep bite malocclusion with combined straightwire appliance and bioprogressive therapy.

Development of straightwire appliances and improvement in archwire technology have simplified fixed appliance therapy in orthodontics. Although straightwire appliances are routinely used to treat most malocclusions, there are inherent limitations and it is necessary to look at the needs of each individual case rather than to simply proceed through a "cookbook" series of archwires to achieve a desired result. The Bioprogressive Therapy, although biomechanically complex, offers several advantages that can be integrated with the straightwire appliances to overcome the latter's shortcomings. This article illustrates the use of simplified Bioprogressive mechanics by means of utility arch in the treatment of a Class II deep bite malocclusion with high anchorage requirement.