prognathism


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prognathism

 [prog´nah-thizm]
abnormal protrusion of one or both jaws, especially the lower jaw, the gnathic index being above 103. adj., adj prognath´ic, prog´nathous.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

prog·na·thism

(prog'nă-thizm), In the diphthong gn, the g is silent only at the beginning of a word.
The condition of being prognathic; abnormal forward projection of one or of both jaws beyond the established normal relationship with the cranial base; the mandibular condyles are in their normal rest relationship to the temporomandibular joints.
Synonym(s): progenia
Farlex Partner Medical Dictionary © Farlex 2012

prog·na·thism

(prog'nă-thizm)
The condition of being prognathic; abnormal forward projection of one or of both jaws beyond the established normal relationship with the cranial base; the mandibular condyles are in their normal rest relationship to the temporomandibular joints.
Synonym(s): progenia.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

prognathism

Abnormal protrusion of either jaw, especially the lower.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

prog·na·thism

(prog'nă-thizm)
Condition of being prognathic; abnormal forward projection of one or both jaws beyond established normal relationship with cranial base; mandibular condyles are in their normal rest relationship to the temporomandibular joints.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
By examining the sagittal yaws position inpersons with skeletal class I authors found that the angle of maxillary prognathism (SNS) and angle of mandibulary prognathism (SNB) are significantly lower than the standard values, which indicates the posterior position of yaws and retrognathic facial type [19].
Often the animal's head was distorted, having a horse-like or pig-like shape, brachygnathism, prognathism, and/or diverging sagittal axes (online Technical Appendix 3 Figure 3).
For instance, Southwest Pacific ("Australoid") series resemble Indians in their narrow vault but differ in their generally lower vault, prognathism, more receding frontal, and more bulging occipital bone.
Graber [18] evaluated the position of the hyoid in 30 children (16 males and 14 females, mean age of 6 years) after orthopedic treatment for mandibular prognathism. Graber observed that the hyoid position had shifted posteriorly and interiorly at 3 years after treatment.
Similar findings were reported by Shapiro and Shapiro.25 Quinn16 has cited nasal airway obstruction as the major cause of mandibular prognathism (forward projecting lower jaw), facial asymmetries, and vertical dysplasias.
However, in some cases, no treatment can be usually done in a child with mandibular prognathism until the end of growth spurt since late growth will possibly make Orthodontics treatment uncertain.
Smith's presentation of African-American Jews is ironic to the assumption of nineteenth century ethnology that the Jewish prognathism was the result of the Jew's close racial relationship to or intermixing with blacks in Africa (Gilman 155).
The cause of malocclusion in this individual may be the result from a lengthening in the mandible; a condition referred to as mandibular prognathism. This is a common cause of malocclusion in rabbits (Verstraete & Osofsky 2005).
On the second place was upper prognathism with constriction of the top jaw accompanied by the Gothic form of the palate and dense location of front teeth in 32 cases (16.5%) (Figures 4, 5, 6).