Abstract :
Objective: To report the non?surgical correction of skeletal Class III in an 11?year?old boy using clockwise mandibular repositioning in combination with GEAW (Gummetal Edgewise Archwire) mechanics.Materials and Methods: Posterior bite?raising was used to unlock the mandible and register an edge?to?edge incisal position for cephalometric analysis (Ricketts). Leveling/alignment were performed with nickel?titanium archwires, followed by space regaining with coils and multiloop mechanics. Rectangular Gummetal 16×22 then 17×22 archwires delivered GEAW forces, combined with short Class III and vertical elastics to control the vertical dimension and obtain clockwise mandibular rotation. Results: After 22 months, bilateral Class I relationships, positive overjet/normalized overbite, coordinated arches, and improved soft?tissue profile were achieved without TMJ symptoms.Conclusion: In growing patients with a mesofacial pattern, controlled posterior extrusion with GEAW can facilitate clockwise mandibular rotation and reduce the clinical appearance of skeletal Class III without surgery.
Keyword :
Skeletal Class III, MEAW/GEAW, Gummetal, Vertical control, Clockwise rotation, Mandibular repositioning