Prognathism

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Prognathism

 

(underbite, underjet), a type of occlusion, usually congenital, in which the mandibular teeth cover the corresponding maxillary teeth when the jaws are in centric occlusion; the alveolar process of maxilla may be in a correct position or inclined forward (or protruding). The lower jaw protrudes considerably forward; the chin and lower lip protrude prominently, and the upper lip seems to regress. In early childhood, prognathism is corrected by orthodontic methods, and in adults by surgical intervention.


Prognathism

 

in anthropology, facial protrusion in a vertical plane. Facial prognathism is the protrusion of the entire face, while alveolar prognathism is the protrusion of only the alveolar (dental) portion of the upper jaw. Facial prognathism is measured by the facial angle, and alveolar prognathism is measured by the angle of the alveolar portion of the face. Prognathism is more typical of southern Mongoloids and representatives of the Equatorial race, although it also occurs in other racial groups.

References in periodicals archive ?
Very few people, at rest, have an Extreme Underbite, useless for horn playing.
Missing teeth contribute to malocclusion, most often an underbite.
Saanen wether with a crooked underbite who tips the scales at around 300
In her foregrounds, pale red-haired figures, all titular self-portraits, flaunt the dark-lipped Hapsburg underbite fixed in our memories by Velazquez (imagine Philip IV played by a naked Tilda Swinton).
"We can't treat severe spacing, crowding, overbite or underbite conditions with this because it involves too much tooth movement.
Fat had rounded the boxy bones of her face, and when she got excited her underbite jutted out like a crooked drawer.
When the tree finally fell four hours later, the stump looked like it had been gnawed by an intoxicated beaver with a severe underbite, my hands looked like chopped liver, and the saw bar was bent so sharply it resembled a grub hoe.
Tabatha, from Arizona, said the snowshoe siamese's facial expression was caused by feline dwarfism and an underbite.
* Rooster is a 3-year-old Boston terrier mix with the cutest underbite. He knows quite a few commands and is very playful.
It was a killer song to open with and the band carry on the momentum with Underbite and from here on in delving from album to album, laying out all of the progressive godlike goodies that the band have crafted with their own hands.
Performance of plowing and sanding of private roads, plowing and gritting of local streets, plowing of priority properties, Ice ripping with Grader including follow tractor or plowing with an underbite and hourly rate driving within Bjurholms municipality.
It's a rough day for Sue as she loses her boyfriend and gains some unwieldy dental headgear for her "underbite overbite," still for one of the few times, big brother Axl is there to console her.