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Facial angle

Any of several variously named and variously defined anatomical angles that have been used to quantify facial protrusion, in dentistry, the angle formed by the intersection of the orbitomeatal (Frankfort) plane with the nasion-pogonion line (inner lower angle), which establishes the anteroposterior relation of the mandible to the upper face at the orbitomeatal plane.

Synonym: Frankfort-mandibular incisor angle.