Three-Dimensional Evaluation of the Upper Airway Morphological Changes in Growing Patients with Skeletal Class III Malocclusion Treated by Protraction Headgear and Rapid Palatal Expansion: A Comparative Research
Fig 4
The changes of the hard tissue.
A) The movement of the A point and UI point. The red contour line represent the T1 data and the green contour line represent the T2 data. B) The displacement of the mandible was assessed in horizontal (Gn-x) and vertical (Gn-y) directions. C) The horizontal position of hyoid bone was evaluated from C3 point to hyoid point (C3-H) in the midsagittal plane, and its vertical displacement was measured through the perpendicular distance between C3-menton line and H (HC3Me). D) The length of the dental arch. E) The width of the maxillary posterior arch in the coronal plane. F) The width of the maxillary posterior arch in the axial view.