Treatment of Growing Skeletal Class III Malocclusion Using Maxillary Expansion and Intermaxillary Elastics

The present case study demonstrates the effective use of a Quad'helix appliance in combination with Class III mechanics for the treatment of a growing skeletal Class III malocclusion. The patient was a 10-year-old girl who had an anterior crossbite as her main complaint. Clinical examination revealed a skeletal Class III malocclusion with a retrusive maxilla. Orthopedic and orthodontic intervention included slow maxillary expansion followed by 26 months of combined treatment. The therapeutic