Upper airway morphologic changes after mandibular setback surgery in skeletal class III malocclusion patients measured using cone beam computed tomography superimposition

This study used the superimposition of cone beam computed tomography (CBCT) images to evaluate three-dimensional morphologic changes in the upper airway space of skeletal class III malocclusion patients with normally positioned maxilla who had undergone mandibular setback surgery.The upper airways of 18 subjects (10 males and eight females) who underwent mandibular setback surgery were assessed using CBCT superimposition at T0 (2weeks before surgery) and T1 (1year after surgery) according to the cervical vertebrae 1 (CV1), CV2, CV3 and CV4 reference planes on CBCT.

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