gnathion


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Related to gnathion: pogonion

gnathion

 [nath´e-on]
the most outward and everted point on the profile curvature of the chin.

gnath·i·on

(nath'ē-on),
The most inferior point of the mandible in the midline. In cephalometrics, it is the midpoint between the most anterior and inferior point on the bony chin, measured at the intersection of the mandibular baseline and the nasion-pogonion line.
[G. gnathos, jaw]

gnath·i·on

(nath'ē-on)
The most inferior point of the mandible in the midline. In cephalometrics, it is the midpoint between the most anterior and inferior point on the bony chin, measured at the intersection of the mandibular baseline and the nasion-pogonion line.
[G. gnathos, jaw]

gnath·i·on

(nath'ē-on)
Most inferior point of mandible in midline.
[G. gnathos, jaw]
References in periodicals archive ?
Subnasale to gnathion distance and nasal index of children with homozygous sickle cell disease in Port-Harcourt.
Major finding: After three treatment sessions, the cervicomental and gnathion angles increased by an average of 27 degrees and 16 degrees, respectively.
We observed high significance with subnasale to gnathion in the ovoid facial form, whereas for the square form both subnasale to gnathion and nasion to subnasale were highly significant, and in square tapering form glabella to subnasale was also highly significant.
Face length was measured from nasion to gnathion and face width was taken as the bizygomatic distance (Fig.
The following reference points and planes on lateral cephalograms were used: L1, the incisal tip of the mandibular central incisor; M7, the distobuccal cusp tip of the mandibular permanent second molar; mandibular plane (MP), the line between gonion and gnathion; L1-MP, the perpendicular distance from the tip of L1 to the mandibular plane; M7-MP, the perpendicular distance from the distobuccal cusp tip of M7 to the mandibular plane; and S-MP, the perpendicular distance from the deepest point of the VSC to the mandibular plane.
The planes used were: mandibular plane (the line between gonion and gnathion); L1-MP (the perpendicular distance from L1 to mandibular plane); L7-MP (the perpendicular distance from L7 to mandibualr plane) and S-MP (the perpendicular distance from deepest point of COS to the mandibular plane) Fig 2.
The face length was taken as the height between nasion to gnathion, while face breadth was measured as the breadth across the zygomatic bones.
The following reference points and planes on lateral cephalograms were used: L1, the incisal tip of the mandibular central incisor; M7, the distobuccal cusp tip of the mandibular permanent second molar; mandibular plane (MP), the line between gonion and gnathion; L1-MP, the perpendicular distance from the tip of L1 to the mandibular plane; M7-MP, the perpendicular distance from the distobuccal cusp tip of M7 to the mandibular plane; and S-MP, the perpendicular distance from the deepest point of the COS to the mandibular plane (Fig 1).10 The depth of the COS was measured on models by method advocated by Veli et al10 in which horizontal reference plane comprising a line between the central incisors and the distobuccal cusp tips of the mandibular second molars was constructed.
The measurements were: a) the distance between point A and subnasale b) the distance between prosthion and labrale superious c) the short- est distance between the upper incisor and the attachment points of the upper and lower lip d) the distance between infradentale and the vermilion border of the lower lip e) the distance between point B and the deepest point of the labiomental crease f) gnathion and soft tissue menton.
En cada paciente se identificaron en total 15 puntos cefalo-metricos, 8 de ellos medianos: trichion, supraglabela, glabela, nasion, A' de downs, B' de downs, pogonion y gnathion; y 7 puntos paramedianos: superciliar, supraorbiatrio, infraorbitario, lateral de la orbita (exocanthion), zygion, agujero mentoniano y gonion, los cuales fueron marcados con un lapiz dermografico.