Reverse twin block for interceptive management of developing class III malocclusion.

Early correction of developing class III malocclusions remains a complex challenge. Treatment approaches for these young patients have been directed at growth modification. Encouraging outcomes have been reported with the use of Class III functional appliances including reverse twin block (RTB) appliance. The present paper tries to provide an insight into RTB appliance used for successful interceptive management of developing class III malocclusion in two children. RTBs were fabricated with bite registered in the position of maximum possible retrusion of mandible with interincisal clearance of 2 mm and vertical clearance of 5 mm in the buccal segments. Anterior crossbite was corrected, and there was a marked improvement in facial appearance of the children. RTB can be a viable and effective functional appliance treatment modality for early management of developing class III malocclusion.