The Use of Mini-Plates for the Treatment of a High- Angle, Dual Bite, Class II Malocclusion

Özet

To present a case report of an orthodontic treatment of a high-angle, dual bite, Class II malocclusion without extractions and with theuse of mini-plates. Class II malocclusion treatment protocols vary according to the morphological component of the malocclusion andthe magnitude and direction of craniofacial growth. It is generally agreed that the cooperation of the patient and careful planning ofanchorage are the key determinants of successful treatment. Protrusion of the upper and lower lip and a retrognathic mandible werethe patient’s chief concerns. The patient had learned to project her mandible forward to disguise the overjet. The patient’s parentselected to correct the malocclusion with the use of bilateral infrazygomatic mini-plates. Pre-treatment condylar stabilization with anorthotic established a stable centric relation position, followed by mounting of the models on a semi-adjustable Panadent articulator.This allowed diagnosis and treatment planning from a stable condylar position and eliminated possible misdiagnosis due to thedual bite. Distal retraction and vertical control of the upper teeth enabled correction of the Class II malocclusion with minimal patientcooperation. Mini-plate-assisted treatment corrected the excessive overbite and overjet. The patient completed treatment with a sta-ble occlusion and no longer postured her jaw forward. The parents and patient were completely satisfied with the positive treatmentoutcome. A 2-year follow-up confirmed the clinical stability.