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Maxillofacial Plastic and Reconstructive Surgery
Fig. 2 | Maxillofacial Plastic and Reconstructive Surgery

Fig. 2

From: Changes in the hyoid bone, tongue, and oropharyngeal airway space after mandibular setback surgery evaluated by cone-beam computed tomography

Fig. 2

Tongue dimensions and position measurements. a Tongue length (TGL) (mm), the distance from epiglottis base and tongue tip; tongue height (TGH) (mm), the length of the vertical bisector from the dorsal tongue surface to a line connecting between the epiglottis base and tongue tip. b Palatal height (PH) (mm), the distance between the tongue’s highest point and the palate in the coronal view. c Intraoral airway volume (IAV) (mm3), the empty space between the tongue and palatal section. d PNSperp-TT/PNSperp-U1, the ratio of the distance from TT and U1 to a PNS perpendicular line to the FH plane

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