| jaw reflex | A spasmodic contraction of the temporal muscles following a downward tap on the loosely hanging mandible. Synonym: chin jerk, chin reflex, jaw jerk, mandibular reflex, masseter reflex. (05 Mar 2000) |
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| jaw relation record | A registration of any positional relationship of the mandible in reference to the maxillae. These records may be any of the many vertical, horizontal, or orientation relations. (12 Dec 1998) |
| jaw repositioning | The changing of any relative position of the mandible to the maxillae, by altering the occlusion of the natural or artificial teeth or by surgical means. (05 Mar 2000) |
| jaw skeleton | That part of the skull derived from the embryonic pharyngeal arches; it comprises the facial bones of the facial skeleton (under bone) and is distinct from that part of the skull which forms the neurocranium or braincase. Synonym: cranium viscerale, visceral cranium, jaw skeleton, splanchnocranium. Origin: viscero-+ cranium Cartilaginous viscerocranium, those elements of the foetal skull derived from the second and succeeding pharyngeal arch cartilages. Membranous viscerocranium, membranous bones, developed in the foetal skull, that overlie maxillary and mandibular components of the first pharyngeal arch cartilage. (05 Mar 2000) |
| jaw winking | A paradoxical movement of eyelids associated with movements of the jaw. (05 Mar 2000) |
| jaw-winking phenomenon | <syndrome> An increase in the width of the eye lids during chewing, sometimes with a rhythmic elevation of the upper lid when the mouth is open and ptosis when the mouth is closed. Synonym: Gunn phenomenon, Gunn's syndrome, jaw-winking phenomenon, jaw-working reflex, Marcus Gunn phenomenon, Marcus Gunn syndrome. (05 Mar 2000) |
| jaw-winking syndrome | <syndrome> An increase in the width of the eye lids during chewing, sometimes with a rhythmic elevation of the upper lid when the mouth is open and ptosis when the mouth is closed. Synonym: Gunn phenomenon, Gunn's syndrome, jaw-winking phenomenon, jaw-working reflex, Marcus Gunn phenomenon, Marcus Gunn syndrome. (05 Mar 2000) |
| jaw-working reflex | <syndrome> An increase in the width of the eye lids during chewing, sometimes with a rhythmic elevation of the upper lid when the mouth is open and ptosis when the mouth is closed. Synonym: Gunn phenomenon, Gunn's syndrome, jaw-winking phenomenon, jaw-working reflex, Marcus Gunn phenomenon, Marcus Gunn syndrome. (05 Mar 2000) |
| unstrained jaw relation | The postural relation of the mandible to the maxillae when the patient is resting comfortably in the upright position and the condyles are in a neutral unstrained position in the glenoid fossa. Synonym: rest jaw relation, unstrained jaw relation. (05 Mar 2000) |
| upper jaw | The upper jaw bone, takes part in the formation of the orbit, hard palate and nasal cavity. (27 Sep 1997) |
| upper jaw bone | The upper jaw bone, takes part in the formation of the orbit, hard palate and nasal cavity. (27 Sep 1997) |
| functional jaw orthopedics | Utilization of muscle forces to effect changes in jaw position and tooth alignment by removable appliances. Synonym: functional orthodontic therapy. (05 Mar 2000) |
| lion-jaw bone-holding forceps | A sturdy forceps with strong sharp teeth in the jaws, used for holding bone fragments. (05 Mar 2000) |
| lumpy jaw | <microbiology> A chronic local or systemic granulomatous infection caused by the fungus Actinomyces bovis or israeli. Symptoms include: weight loss, weakness, fever and pain at site of infection. Signs: multiple draining sinuses. (27 Sep 1997) |
| acute lower GI haemorrhage | <gastroenterology> Typical presentation: Sudden onset of brisk rectal bleeding without blood in gastric aspirate Diagnostic considerations: diverticulosis, angiodysplasia, ischemic colitis, inflammatory bowel disease (rarely), polyps are usually present, carcinoma causing a chronic bleed, haemorrhoids. (12 Dec 1998) |