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 ?
Caption: Figure 1: Index patient showing facial dysmorphism (prominent eyebrow, low set ears, midfacial retrusion, and mild prognathism).
The lateral cephalogram confirmed the hypoplasia of the mid-facial region along with the associated relative mandibular prognathism. The radiographs of the upper limbs displayed the following features: curving of the humerus bones bilaterally, underdeveloped styloid process of the ulna bilaterally, postaxial polydactyly and clinodactyly bilaterally, hyperplastic capitate of the left wrist, undeveloped metacarpal for the extra digit in the left hand, and hypoplastic hamate of the right wrist.
Sotobori et al., "Changes in temporomandibular joint and ramus after sagittal split ramus osteotomy in mandibular prognathism patients with and without asymmetry," Journal of Cranio-Maxillofacial Surgery, vol.
Missing teeth have been linked to various craniofacial consequences, including a class III pattern, maxillary and mandibular angular prognathism, and maxillary restriction [17].
There is a reduced anterior and increased posterior facial height, increased sagittal craniofacial dimensions, reduced inclination of the mandible, facial prognathism, decreased angle of the cranial base and increased nasopharyngeal space in the flexion of the head (reduced craniocervical angle).
Dental posts used in the correction of mandibular prognathism. Proc Eur Assoc Avian Vet.
His mouth tended to be open and he had macrostomia and macroglossia with a grooved tongue and prognathism. He also had pectus excavatum and a marked lordosis.
Furthermore, rhNoggin may also be used to treat mandibular growth alterations, such as prognathism and micrognathia as well as cleft palate.
Enlarged encephalizational levels in cubic centimeters must increase; prognathism must move towards orthognathism (brachycephalic racialization), conceptions of intelligence from Scholastic Aptitude Test scores must move above one thousand points, and finally the historical teleology must move from prehistory (Ethiopian) to history (ancient Egyptian).
Cephalometric analysis of changes arising during treatment of prognathism. Stomato-logica (Moskva) 1961 Jan; 48(2):57-61.