Headwork Positioning Lines, Landmarks

glabellomeatal line (GML)

A

glabelloalveolar line (GAL)

A line between the glabella and alveolar process of the maxilla G

glabella

A single bony prominence of the frontal bone located between the superciliary arches in the inferior part of the frontal bone above the root of the nose.

orbitomeatal line (OML)

B

infraorbitomeatal line (IOML)

C also called Reid's baseline

tragus

Cartilaginous projection anterior to the external opening of the ear

acanthiomeateal line (AML)

D

lips-meatal line (LML)

E

mentomeatal line (MML)

F

acanthion

Junction of the nose and upper lip

mental point

center of mental protuberance

top of ear attachment (TEA)

corresponds with level of petrous ridge

external acoustic meatus

ear hole also called auricular point

inion

external occipital protuberance

auricle

external portion of the ear, known as the pinna

supraorbital margin

highest level of facial bone mass

inner canthus

inner corner of the eye where the upper and lower eyelids meet

outer canthus

outer corner of the eye where the upper and lower eyelids meet

nasion

root of the nose at the median sagittal plane