jaw

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Related to jaw movement: ginglymoarthrodial, jaw joint

jaw

 [jaw]
either the mandible (lower jaw) or the maxilla (upper jaw), two opposing bony structures of the mouth of a vertebrate; they bear the teeth and are used for seizing prey, for biting, or for masticating food. See anatomic Table of Bones in the Appendices.
cleft jaw a cleft between the median nasal and maxillary processes through the alveolus; see also cleft palate. Called also gnathoschisis.
Hapsburg jaw a mandible that is prognathous, often accompanied by Hapsburg lip. See illustration.
Hapsburg jaw with Hapsburg lip.
phossy jaw phosphonecrosis.

jaw

(jaw),
1. One of the two bony structures in which the teeth are set to form the framework of the mouth.
2. Common name for either the maxillae or the mandible.
[A.S. ceōwan, to chew]

jaw

(jaw) either of the two bony tooth-bearing structures (mandible and maxilla) in the head of dentate vertebrates.
cleft jaw  a cleft between the median nasal and maxillary prominences through the alveolus.
Hapsburg jaw  a mandibular prognathous jaw, often accompanied by Hapsburg lip.
phossy jaw  phosphorus necrosis.

jaw

(jô)
n.
a. Either of two bony or cartilaginous structures that in most vertebrates form the framework of the mouth and hold the teeth.
b. The mandible or maxilla or the part of the face covering these bones.
c. Any of various structures of invertebrates that have an analogous function to vertebrate jaws.

jaw′less adj.

jaw

Etymology: AS, ceowan, to chew
a common term used to describe the maxillae and the mandible and the soft tissue that covers these structures, which contain the teeth and form the framework for the mouth. See also jaw relation.

jaw

(jaw)
1. One of the two bony structures, in which the teeth are set, forming the framework of the mouth.
2. Common name for either the maxilla or the mandible.
[A.S. ceōwan, to chew]

jaw

(jo)
Enlarge picture
JAW
1. Either or both of the maxillary and mandibular bones, bearing the teeth and forming the mouth framework. See: illustration
2. The grasping part of a surgical instrument. The word is usually used in the plural.

cleft jaw

An early embryonic malformation resulting in lack of fusion of the right and left mandible into a single bone.

crackling jaw

Noise in the normal or diseased temporomandibular joint during movement of the jaw. Synonym: crepitation

lumpy jaw

Actinomycosis.

jaw

1. The mandible, the U-shaped bone that articulates with the base of the skull high up in front of the ears. In biting and chewing (mastication) the mandible is pulled upwards by powerful muscles running down from the base and temples (temporal bones) of the skull.
2. The MAXILLA, or upper jaw.

jaw

the mandibles of any animal. The term is usually restricted to the bones surrounding the mouth of vertebrates, the (paired) upper jaws being referred to as the maxillae and the lower as the mandible. These bones carry the teeth where present, and are often used for crushing purposes.

jaw

(jaw)
1. One of the two bony structures in which teeth are set to form oral framework.
2. Common name for either maxillae or mandible.
[A.S. ceōwan, to chew]

jaw,

n a common name for either the maxillae or the mandible; the meaning is usually extended to include their soft tissue covering.
jaw, cleft (gnathouschisis),
jaw cyst,
n an abnormal bladderlike sac within the jaw. May occur in either the maxilla or mandible associated with or not associated with the dentition and its formation. See also cyst.
jaw, fibro-osseous, lesion,
jaw fracture,
n a break in the continuity of the bone of the maxilla or mandible. See also fracture.
jaw, lumpy,
jaw movement,
n See movement, jaw.
jaw, phossy,
jaw reflex,
jaw relation,
jaw-to-jaw relationship,

jaw

either of the two opposing bony structures (maxilla and mandible) of the mouth of vertebrates; they bear the teeth and are used for seizing prey, for biting, or for masticating food.

jaw bone
the mandible or maxilla, especially the mandible.
jaw champing
involuntary, rapid, repetitive clenching of the teeth; accompanied by frothing of saliva; frequently accompanies clonic convulsions.
jaw chattering
involuntary, rapid clicking together of the teeth without salivation and usually accompanied by generalized shivering; in animals, may be a sign of painful teeth.
dropped jaw
see mandibular neurapraxia.
jaw locking
a dislocation of the jaw, usually following wide opening, in which the mouth cannot be closed. See also temporomandibular dysplasia.
jaw malapposition
overshot jaw
pig jaw
jaw retractor
a dental gag used to keep the jaws of an animal as open as possible.
rubber jaw
see renal secondary hyperparathyroidism.
undershot jaw

Patient discussion about jaw

Q. after dinner my daughters jaw swelled up on one side and hurts her, so does her neck on that side. What does this mean? she is 9, no fever or any other ill effects, just the pain

A. weird. swelled up fast? does she have problem breathing? if so- it could be an allergic reaction. if she has problems breathing - GO NOW TO AN ER!!!
if it took a little bit - could be food that got stuck in her gums really hard causing an edema.
if it was slow (over night) could be an abscess in her tooth (a tooth decay that penetrated to the dental pulp).
any way i would go check it out.

More discussions about jaw
References in periodicals archive ?
Mandibular jaw movement capacity in 10-17- yr-old children and adolescents: normative values and the influence of gender, age, and temporomandibular disorders.
Technical data of Titan (2) LOAD Capacity 3000 N Range 1-100 % Available load cells 3000/600/120 N EXTENSION Maximum speed 4000 mm / min Testing/return/jog speed 2-4000 mm / min Maximum stroke 600 mm Total vertical test space 840 mm PNEUMATICS Input pressure 800 kPa / 8 bar / 110 PSI Testing pressure 800 kPa / 8 bar / 110 PSI Air preparation Filtered to 5 microns (absolute) or better to remove excess particulates, oil and moisture SAFETY Gripping Low pressure during specimen loading Jaw movement Impact protection Load cell Force overload inhibit Conformity Complies with CE Directives CONTROL SYSTEM Type CRE PC Control Windows XP or VISTA running dedicated software Drive control Digital precision closed loop A.
A little bit of jaw movement here, some preemptive valsalva over there, and my eardrums should be in great shape.
Rather than a conventional pivot jaw, they have make use of vertical jaw movement, meaning that taller products can be packed and the whole operation is both smoother and faster.
Jaw movement can be improved through oral motor therapy by an occupational or speech therapist who has been trained in these techniques, it is easier to prevent loss of movement than to restore it.
A lot of people assume that if you have any pain in your face or jaw it's due to some sort of temporomandibular joint problem, when in fact it may be due to a muscle problem or a number of disorders affecting jaw movement," says Dr.
During recording, patients are instructed to avoid any kind of motion, especially the one that involves head and jaw movements.
The results, however, showed that the way rat muscles have adapted over time, has increased their ability to chew more effectively than a guinea pig and gnaw better than a squirrel, even though these two species are specialists in these kinds of jaw movements.
It also allows operators to set functions such as sealing time, sealing pressure, cooling time, speed and all jaw movements, both vertical and horizontal, which makes for high performance, flexibility and seal quality.