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gnathic index definition

gnathic index

a measurement of the relative amount of protrusion of the jaw, expressed in terms of the ratio of the distance from the nasion to the basion (arbitrarily taken as 100) to the distance from the basion to the middle point of the alveolar process

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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