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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

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]
Farlex Partner Medical Dictionary © Farlex 2012

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.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

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]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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.
Medical Dictionary, © 2009 Farlex and Partners

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.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

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.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

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]
Medical Dictionary for the Dental Professions © Farlex 2012

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
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References in periodicals archive ?
(4) Mouth opening amount: the degree of jaw movement was measured using an interincisal caliper (mm).
TMD SYMPTOMS 1983 1993 2003 10y 15y 10y 15y 10y 15y Jaw tiredness 3 4 3 9 4 7 TMJ clicking 12 16 2 14 5 17 TMJ crepitation 2 0 1 4 0 4 Locking/catching 1 5 1 5 0 2 Luxation 0 1 0 0 0 0 Reduced jaw movement 2 2 1 1 1 0 capacity Pain on jaw movement 3 2 3 2 5 2 Other pain in the face/jaws 1 1 1 4 4 Table 4.
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.C.
Sensors can be incorporated with rotary actuators and grippers to provide multiple signals through rotation or jaw movement.
Cross-sectional population-based studies reveal that 40% to 75% of adult populations have at least one sign of temporomandibular joint dysfunction (jaw movement abnormalities, joint noise, tenderness on palpation, etc) and approximately 33% have at least one symptom (face pain, joint pain, etc.[7-9] Many of these signs and symptoms are not troublesome for the individual, with only 3% to 7% of the population seeking any advice or care.[7-9] Although in the general population women seem to have only a slightly greater incidence of TMD symptoms,[7,10-12] women seek care for TMD more often than men at a ratio ranging from 3:1 to 9:1.[13-15]
As long as the displaced disc causes no pain or problems with jaw movement, no treatment is needed.
It utilizes a sensor array placed around the face and attached to a computer, and it accurately measures jaw movement both qualitatively and quantitatively in several dimensions.
TMJ dysfunction is worsened by the constant jaw movement of chewing gum.
Patients display joint symptoms -- such as joint pain, reduced jaw movement, clicking or popping of the temporomandibular joint, but also develop a muscular condition, including muscle pain and fatigue, and/or radiating face and neck pain.
"The process is aided by jaw movement, which assists the natural movement by dislodging debris attached to the walls of the ear canal, increasing the likelihood of its expulsion.
The patient showed mild jaw movement gradually improved and also showed clinical bony union at 4 weeks postoperatively and wires were removed (Fig.
Singing a legato line can be difficult when the tongue is unable to move smoothly between various vowels and consonants, and the problem is exacerbated when there is unnecessary jaw movement.