Long-term 3-dimensional stability of mandibular advancement surgery.

Purpose: To evaluate 3-dimensional changes in the position of the condyles, rami, and chin from 1 to 3 years after mandibular advancement surgery.

Materials And Methods: This prospective observational study used pre- and postoperative cone-beam computed tomograms of 27 subjects with skeletal Class II jaw relation and normal or deep overbite. An automatic technique of cranial base superimposition was used to assess positional and bone remodeling changes that were visually displayed and quantified using 3-dimensional color maps.

Observer reliability of three-dimensional cephalometric landmark identification on cone-beam computerized tomography.

Objective: To evaluate reliability in 3-dimensional (3D) landmark identification using cone-beam computerized tomography (CBCT).

Study Design: Twelve presurgery CBCTs were randomly selected from 159 orthognathic surgery patients. Three observers independently repeated 3 times the identification of 30 landmarks in the sagittal, coronal, and axial slices.