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Maxillofacial Plastic and Reconstructive Surgery
Fig. 1 | Maxillofacial Plastic and Reconstructive Surgery

Fig. 1

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

Fig. 1

The plus and minus values along the three axes used in this study. The coordinates of the landmarks were assigned according to nasion (0, 0, 0). For the x-axis, landmarks on the left side are (+) values and the right side (−) values. For the y-axis, landmarks located posterior to the nasion are (+) values and anterior to the nasion (−) values. For the z-axis, landmarks located superior to the nasion are (+) values and inferior to the nasion (−) values. The coordinates of the Hb point are identified in T0 and T1 CBCT images

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