| facial h. |
the linear measurement of portions of the face, in the midline, using specified reference points; see anterior, upper, lower, and posterior facial heights, and see illustration. Click here to view image■Facial height. Anterior facial height is the sum of upper and lower facial heights, the lower limit of the latter variously defined as the pogonion, gnathion or menton. Posterior facial height is often measured from the gonion to the condylare, sella, or center of face point. A, subspinale; ANS, anterior nasal spine; B, supramentale; Cd, condylare; CF, center of face; Gn, gnathion; Go, gonion; M, menton; N, nasion; O,orbitale; Pg, pogonion; Po, porion; S, sella.
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| facial h., anterior |
the linear distance from the nasion to the bottom of the chin, the precise point variously specified as the pogonion, gnathion, or menton. It is subdivided into upper and lower facial h. See also illustration.
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| facial h., lower |
the linear distance between the chin, specified as either the menton, gnathion, or pogonion, and the region of the teeth, usually the anterior nasal spine or the interdentale inferius. See illustration.
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| facial h., posterior |
a quite variable measure of the linear height of the face in the region of the ear. The most common measure is between a point on the inferior border of the mandible, generally the gonion, and the condylare, sella, or a point defined as the center facial point. Other measurements of height exist, some involving lines of intersection drawn between major facial planes. See illustration.
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| facial h., upper |
the linear distance between the nasion and a point in the region of the maxillary teeth, usually the anterior nasal spine but sometimes the interdentale superius or prosthion. See illustration.
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