Modified maxillary protraction headgear for the correction of class III skeletal malocclusion with anterior open bite.
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.
Qazi
Haroon Shahid
HS
Department of Orthodontics, Margalla College of Dentistry, Rawalpindi, Pakistan. haroon77@hotmail.com
Amjad
Al-Taki
AT
D002648:Child; D005115:Extraoral Traction Appliances; D005260:Female; D006801:Humans; D008313:Malocclusion, Angle Class III / Q000628:therapy*; D024343:Open Bite / Q000628:therapy*