Akademik

protraction

In dentistry, the extension of teeth or other maxillary or mandibular structures into a position anterior to normal. [see protractor]

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

- maxillary p. a type of facial anomaly in which the subnasion lies anterior to the orbital plane.

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pro·trac·tion -'trak-shən n

1) the act of moving an anatomical part forward

2) the state of being protracted esp protrusion of the jaws

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pro·trac·tion (pro-trakґshən) [L. protrahere to drag forth] 1. drawing out or lengthening. 2. extension or protrusion. 3. a condition in which the teeth or other maxillary or mandibular structures are situated anterior to their normal position.

Medical dictionary. 2011.