Adult Class II treatment using a new lingual bracket and skeletal anchorage.

quired several archwire bends to compensate for the lingual morphology of the teeth.1 Not only did this complicate the clinical procedure, but it led to archwire breakage in the bend areas and created impediments to sliding mechanics, potentially interfering with canine retraction. A sliding jig could not be used, and it was difficult to adjust angulations for the correction of root positions. The lingual straightwire concept, introduced by Takemoto and Scuzzo2 and applied by other authors,3,4 eliminates the need to place bends in the archwires, thus making lingual treatment simpler, more practical, and faster and promoting better biomechanical control with greater patient comfort. Our desire to develop a lingual straightwire system that could be clinically effective as well as less expensive led to the design and production of the Prieto Straight Wire bracket (PSWb*).