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14644 Surgery

Orthognathic Surgery all are true except

AAdvances pushes back or changes the vertical positions of the mandible and/or maxilla.
BUsing the sagittal split mandibular osteotomy is restricted to the treatment of mandibular retrognathia. (Correct Answer)
CMay significantly improve the psychological well being of the patient.
DEmploying autologous bone grafts prolongs the hospitalisation of the patient.