mandibular protraction


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man·dib·u·lar pro·trac·tion

a type of facial anomaly in which the gnathion lies anterior to the orbital plane.

man·dib·u·lar pro·trac·tion

(man-dibyū-lăr prō-trakshŭn)
Facial anomaly in which the gnathion lies anterior to orbital plane.
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