ABSTRACT

This case report describes the treatment of a patient aged 12 years with a Class III malocclusion using a modified maxillary protractor and discusses the results of the treatment. The patient was instructed to wear the appliance at least 20 hours a day until a positive overjet was achieved. After the overcorrection of the anterior crossbite with protraction therapy, edgewise fixed appliances were used to correct the midline discrepancy and to establish Class I canine and molar relationships. Treatment time for maxillary protraction was 6 months, and the total treatment time was 18 months. Correction of the malocclusion was accomplished with both skeletal and dental changes.