Haroon Shahid Qazi, Amjad Altaki.
Modified maxillary protraction headgear for the correction of class III skeletal malocclusion with anterior open bite.
J Coll Physicians Surg Pak Jan ;15(12):823-5.

This is a case report of a 10-year-old girl with a hyper divergent class III skeletal malocclusion caused primarily due to maxillary retrognathism. Treatment involved the use of a modified maxillary protraction face mask that carries the point of force application extra orally to pass through the centre of resistance of the maxillary dentoalveolar complex. After 8 months, the maxilla was displaced anteriorly without rotation. Maxillary occlusal plane showed a clockwise rotation. Maxillary incisors were extruded and retroclined. Mandible was displaced downward and backward. Another 18 months were required for fixed orthodontic treatment to achieve perfect interdigitation.

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