Prognathism


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to Prognathism: Orthognathism, supraorbital torus, brachygnathism

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 ?
Dental implants are the most likely treatment for the patient at the age of 18-20 years of age and it may be necessary to perform orthognatic surgery because of the relative mandibular prognathism.
The features are very freely chiseled and almost Caucasian, without the prognathism and the flat nose.
85) BSAP, 1 (1860), 480, 489-91; Pruner-Bey, "Memoire sur les negres," Memoires de la Societe d'anthropologie de Paris (hereafter MSAP), 1 (1862), 293-333 on prognathism and peripheral nerve capacity.
A broad range of techniques of cosmetic surgery (such as blepharoplasty, facelift, chemabrasion and dermabrasion, silicone injection therapy, rhinoplasty, otoplasty, prognathism and mentoplasty) have now progressed to a stage where dramatic results can be achieved (e.
The term prognathism applies to a horizontal overgrowth of the lower jaw.
CH type 1 causes mandibular prognathism (forward Over-development of the mandible).
In life, she would have had a relatively longer and narrower brain case and face and slight prognathism of the front teeth and supporting bone.