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.

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.

pro·trac·tion

(prō-trak'shŭn)
In dentistry, extension of teeth or other maxillary or mandibular structures into a position anterior to normal.
References in periodicals archive ?
In our assessment of the lower lip position, although lower lip significantly retruded during the expansion and protraction period, a slight protrusion was observed during the fixed orthodontic treatment period.
Firing B65 is sufficient to evoke fully coordinated motor programs in which it fires during the protraction phase (Kabotyanski et al., 1998).
The relation stating that in time our head posture will become more prone to protraction seems to be logical.
Maxillary protraction is an important means of orthodontic treatment of skeletal class III malocclusion in mixed dentition, suitable for maxillary hypoplasia, maxillary retrusion of the patients, can promote the growth and development of the maxilla, this method has also been proved to have obvious growth and improvement effect for providing a more favorable environment for the normal development of the maxilla and mandible (Cordasco et al, 2014; Ngan & Moon, 2015; Scherer et al, 2015).The timing of the treatment is about 8 years old, or after the eruption of the maxillary central incisor and the lateral incisor.
Most of the negative biomechanical associations (scapular downward rotation, anterior tilt, protraction, depression) with SD, SIS, and TOS, are functionally countered by the upper trapezius, which promote elevation, retraction, posterior tilting and upward rotation.
Furthermore, certain insulin analogues also depend on the formation of dihexamers and multihexamers as a mechanism of protraction in the SC tissue [20,33], as will be elaborated in the section on insulin types.
The typical age for a successful maxillary protraction treatment is said to be before the age of 10 years.
The goat had low body score, hyporexia, alopecia, achromotrichia (markedly around the eyes) and in the neurologic assessment presented stiff and unbalanced gait, left hindlimb protraction, paralysis with dragging of digit and difficulty to stand up (Figure 1A, 1B and 1C).