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Maxillofacial Plastic and Reconstructive Surgery
Fig. 3 | Maxillofacial Plastic and Reconstructive Surgery

Fig. 3

From: Three-dimensional analysis of changes in airway space after bimaxillary orthognathic surgery with maxillomandibular setback and their association with obstructive sleep apnea

Fig. 3

a. Measurements of preoperative and postoperative airway parameter changes using Invivo 5 superimposition module. Posterior impaction: The perpendicular distance to the FH plane between the posterior nasal spines (PNS) before and after surgery. Maxillary setback: The horizontal distance between the incisor tips as in parallel with the FH plane. Mandibular setback: The horizontal distance between mentons as in parallel with the FH plane. The maximum anteroposterior width (C1AP, C2AP, C3AP), b. maximum lateral width (C1LW, C2LW, C3LW), and the area of the cross section (C1A, C2A, C3A) on the horizontal view at C1, C2, and C3 level were measured, respectively

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