protraction


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protraction

 [pro-trak´shun]
a forward projection of a facial structure; in mandibular protraction the gnathion is anterior to the orbital plane; in maxillary protraction the subnasion is anterior to the orbital plane.

pro·trac·tion

(prō-trak'shŭn),
In dentistry, the extension of teeth or other maxillary or mandibular structures into a position anterior to normal.

protraction

/pro·trac·tion/ (pro-trak´shun)
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.

mandibular protraction 
1. the protrusive movement of the mandible initiated by the lateral and medial pterygoid muscles acting simultaneously.
2. a facial anomaly in which the gnathion lies anterior to the orbital plane.
maxillary protraction  a facial anomaly in which the subnasion is anterior to the orbital plane.

pro·trac·tion

(prō-trak'shŭn)
1. dentistry The extension of teeth or other maxillary or mandibular structures into a position anterior to normal.
See also: protractor
2. Forward movement of the scapula.

protraction,

n forward movement.

pro·trac·tion

(prō-trak'shŭn)
In dentistry, extension of teeth or other maxillary or mandibular structures into a position anterior to normal.

protraction (prōtrak´shən),

n a condition in which teeth or other maxillary or mandibular structures are situated anterior to their normal position.
References in periodicals archive ?
Thirdly: Darfur/Kordofan Confederate States Where the war in Darfur shows signs of protraction with no outright win by the warring sides and a regional conference is impossible to convene Darfurians and Kordofanese may be forced to opt for self-determination and form a Confederate State.
However this did not bring a success, since error corrections, caused thru inaccurate protraction and quintuplicate magnifying, took too much time.
Protraction describes movement of the globe forwards, out of the orbit, as in proptosis.
KATHMANDU, May 6 -- Members of the European Union (EU) on Thursday expressed their concern over lack of seriousness on the part of three big parties-the UCPN (Maoist), the Nepali Congress (NC), the CPN-UML- with the protraction of Maoists indefinite strike.
The introduction of temporary anchorage devices allows protraction of posterior teeth without any lower incisor retraction.
Realizing that "to compel a people, singularly obstinate, to sue for peace, it is absolutely necessary, as the sequel in this case showed, to strike, effectively, at the vitals of the nation," Scott sought to avoid any further protraction of hostilities by threatening the very heart of the Mexican regime.
As stated previously, factors in the protraction of the closed stage include the level of higher brain function impairment, the availability of social resources, and the mother's flexibility, such as whether she is able to accept outside intervention.
There was a protraction of the entire migration event (15-18 days longer) in 2003 compared to the other 2 years.
The structure should also support the work of joint Environmental Protection Agency-Department of Transportation-Housing and Urban Development agreement on coordinated planning on federal transportation, environmental protraction and housing investments that will support more efficient use of resources and result in better decisions.
Elevation and protraction of the hyoid has also been shown to play a crucial role in the opening of the upper oesophageal sphincter (UES) through the anatomical stretch that occurs with the up-and-forward movement of the larynx.
54) reported uncorrectable thoracic kyphosis and scapular protraction in 64% of their 22 patients with upper-thoracic paraplegia (T2-7) and 20% of those with lower-thoracic (T8-12) paraplegia.
The function of the columellar muscle is to control the protraction and retraction of the snail's head and foot out of and into its shell.