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Table 1 Definition of landmarks

From: Analysis of hard tissue facial symmetry after unilateral mandibular reconstruction

Anterior nasal spine (ANS) A protrusion of the maxilla at the base of the nose
Frankfurt line (FH) Connected the uppermost point on the external acoustic meatus's margin with the lowermost point on the orbital margin.
Gonion (GO) The point between the inferior point on the posterior border of ramus and the most posterior point on the inferior border of the mandibular body.
Gonial angle The angle between the junction of the posterior border of the ramus and lower borders of the mandibular body
Pogonion (Pog) The most forward-projecting point of the symphysis
Vomer line (VL) The perpendicular line from the vomer to the horizontal plane (VL)