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mondofacto - Online Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 26/01/2008, UK Words: 116197

occluding relation
The jaw relation at which the opposing teeth occlude. ... (05 Mar 2000) ...

occlusal
<dentistry> The chewing or grinding surface of the bicuspid and molar teeth. ... (08 Jan 1998) ...

occlusal adjustment
Selective grinding of occlusal surfaces of the teeth in an effort to eliminate premature contacts and occlusal interferences; to establish optimal masticatory effectiveness, stable occlusal relationships, direction of main occlusal forces, and efficient multidirectional patterns, to improve functional relations and to induce physiologic stimulation …

occlusal analysis
A study of the relations of the occlusal surfaces of opposing teeth and their effect upon related structures. ... Synonym: bite analysis. ... (05 Mar 2000) ...

occlusal balance
A condition in which there are simultaneous contacts of the occluding units of the opposing dental arches in centric and eccentric positions within the functional range. ... (05 Mar 2000) ...

occlusal caries
Caries starting from the occlusal surface of a tooth. ... (05 Mar 2000) ...

occlusal clearance
A condition in which the opposing occlusal surfaces may glide over one another without any interfering projection. ... (05 Mar 2000) ...

occlusal correction
The correction of malocclusion, by whatever means is employed, elimination of disharmony of occlusal contacts. ... (05 Mar 2000) ...

occlusal curvature
Synonym for curve of occlusion ... A curved surface which makes simultaneous contact with the major portion of the incisal and occlusal prominences of the existing teeth, the curve of a dentition on which the occlusal surfaces lie. ... Synonym: occlusal curvature. ... (05 Mar 2000) ...

occlusal disharmony
Contacts of opposing occlusal surfaces of teeth which are not in harmony with other tooth contacts and with the anatomic and physiologic control of the mandible, occlusions which do not coincide with their respective jaw relations. ... See: deflective occlusal contact. ... (05 Mar 2000) ...

occlusal embrasure
A space existing on the occlusal aspect of the interproximal contact areas between adjacent posterior teeth. ... (05 Mar 2000) ...

occlusal force
The result of muscular force applied on opposing teeth. ... (05 Mar 2000) ...

occlusal form
The form of the occlusal surface of a tooth or a row of teeth. ... Synonym: occlusal pattern. ... (05 Mar 2000) ...

occlusal imbalance
An inharmonious relationship between the teeth of the maxilla and mandible during closing or functional movements of the jaw. ... (05 Mar 2000) ...

occlusal path
A gliding occlusal contact, the path of movement of an occlusal surface. ... (05 Mar 2000) ...

occlusal pattern
Synonym for occlusal form ... The form of the occlusal surface of a tooth or a row of teeth. ... Synonym: occlusal pattern. ... (05 Mar 2000) ...

occlusal plane
<dentistry> The imaginary surface on which upper and lower teeth meet. ... (08 Jan 1998) ...

occlusal position
The relationship of the mandible and maxillae when the jaws are closed and the teeth are in contact; it may or may not coincide with centric occlusion. ... (05 Mar 2000) ...

occlusal pressure
Any force exerted upon the occlusal surfaces of teeth. ... Synonym: biting pressure. ... (05 Mar 2000) ...

occlusal radiograph
<dentistry> The only X-ray that is taken without an X-ray holder. The X-ray film for this procedure is shaped like a large biscuit and the patient is asked to bite on the X-ray film and the top of the X-ray machine is positioned over your nose for a maxillary occlusal X-ray or under your chin for a mandibular occlusal film. The X-ray displays …

occlusal rest
A rigid extension of a removable partial denture onto the occlusal surface of a posterior tooth for support of the prosthesis. ... (05 Mar 2000) ...

occlusal rest bar
A minor connector used to attach an occlusal rest to a major part of a removable partial denture. ... (05 Mar 2000) ...

occlusal rim
Synonym for occlusion rim ... Occluding surfaces built on temporary or permanent denture bases for the purpose of making maxillomandibular relation records and for arranging teeth. ... Synonym: bite rim, occlusal rim, record rim. ... (05 Mar 2000) ...

occlusal scheme
Synonym for occlusal system ... The form or design and arrangement of the occlusal and incisal units of a dentition or the teeth on a denture. ... Synonym: occlusal scheme. ... (05 Mar 2000) ...

occlusal splints
Rigid or flexible appliances that overlay the occlusal surfaces of the teeth. They are used to treat clenching and bruxism and their sequelae, and to provide temporary relief from muscle or temporomandibular joint pain. ... (12 Dec 1998) ...

occlusal surface
The surface of a tooth that occludes with or contacts an opposing surface of a tooth in the opposing jaw. ... Synonym: denture occlusal surface. ... (05 Mar 2000) ...

occlusal system
The form or design and arrangement of the occlusal and incisal units of a dentition or the teeth on a denture. ... Synonym: occlusal scheme. ... (05 Mar 2000) ...

occlusal table
The occlusal or grinding surfaces of the bicuspid and molar teeth. ... (05 Mar 2000) ...

occlusal vertical dimension
The vertical dimension of the face when the teeth or occlusion rims are in contact in centric occlusion; decrease in occlusal vertical dimension may result from modification of tooth form by attrition or grinding, drifting of teeth, or, in edentulous patients, by resorption of residual ridges; increase may result from modifications of tooth form, t …

occlusal wear
Attritional loss of substance on opposing occlusal units or surfaces. ... See: abrasion. ... (05 Mar 2000) ...

occlusion
1. The act of closure or state of being closed. ... 2. The relationship between all of the components of the masticatory system in normal function, dysfunction and parafunction. ... 3. Momentary complete closure of some area in the vocal tract, causing stoppage of the breath and accumulation of pressure. ... Origin: L. Occlusio ... (18 Nov 1997) ...

occlusion of pupil
The presence of an opaque membrane closing the pupillary area. ... (05 Mar 2000) ...

occlusion rim
Occluding surfaces built on temporary or permanent denture bases for the purpose of making maxillomandibular relation records and for arranging teeth. ... Synonym: bite rim, occlusal rim, record rim. ... (05 Mar 2000) ...

occlusive
Serving to close; denoting a bandage or dressing that closes a wound and excludes it from the air. ... (05 Mar 2000) ...

occlusive dressing
A dressing that hermetically seals a wound. ... (05 Mar 2000) ...

occlusive dressings
Material, usually gauze or absorbent cotton, used to cover and protect wounds, to seal them from contact with air or bacteria. ... (12 Dec 1998) ...

occlusive ileus
Complete mechanical blocking of the intestinal lumen. ... (05 Mar 2000) ...

occlusive meningitis
Leptomeningitis causing occlusion of the spinal fluid pathways. ... (05 Mar 2000) ...

occlusometer
Synonym for gnathodynamometer ... <instrument> A device for measuring biting pressure. ... Synonym: bite gauge, occlusometer. ... Origin: Gnatho-+ dynamometer ... (05 Mar 2000) ...

occular
Having to do with the eye. ... (12 Dec 1998) ...

occulomotor nerve
<anatomy, nerve> The occulomotor nerve is responsible for motor enervation of upper eyelid muscle, extraocular muscle and pupillary muscle. ... Lesions of the oculomotor nerve results in ptosis (dropping eyelid), deviation of the eyeball outward, double vision and a dilated pupil. ... Synonym: cranial nerve III. ... (27 Sep 1997) ...

occult
Obscure, concealed from observation, difficult to understand. ... (18 Nov 1997) ...

occult bleeding
See: occult blood. ... (05 Mar 2000) ...

occult blood
Blood that is in the faeces or vomitus that is not obvious by general inspection. Used as a diagnostic screening test for colon cancer. Tests for occult blood are generally colourimetric. Stool sample will turn blue when a particular chemical reagent is mixed with the specimen on test paper. Kits for measuring occult blood in the stools are now ava …

occult border of nail
Synonym for proximal border of nail ... The proximal border of the nail entirely covered by the nail wall. ... Synonym: margo occultus unguis, occult border of nail. ... (05 Mar 2000) ...

occult carcinoma
<tumour> A small carcinoma, either asymptomatic or giving rise to metastases without symptoms due to the primary carcinoma. ... (05 Mar 2000) ...

occult fracture
A condition in which there are clinical signs of fracture but no X-ray evidence; after 3 or 4 weeks X-ray imaging shows new bone formation. ... (05 Mar 2000) ...

occult hydrocephalus
Synonym for normal pressure hydrocephalus ... <neurology> A brain disorder caused by blockage of the flow of cerebrospinal fluid (CSF), with enlargement of the ventricles of the brain (keep the pressure normal) and compression of brain tissue. Brain atrophy is the result. In this condition the CSF is produced normally but not reabsorbed. ... Sy …

occultation
1. <astronomy> The hiding of a heavenly body from sight by the intervention of some other of the heavenly bodies; applied especially to eclipses of stars and planets by the moon, and to the eclipses of satellites of planets by their primaries. ... 2. The state of being occult. 'The reappearance of such an author after those long periods of occ …

occupational deafness
Synonym for acoustic trauma deafness ... Sensorineural hearing loss due to overexposure to high intensity noise levels. ... Synonym: boilermaker's deafness, industrial deafness, occupational deafness. ... (05 Mar 2000) ...

occupational dentistry
The branch of dentistry concerned with maintaining oral health of employees in occupational environments. ... (12 Dec 1998) ...

occupational disease
A morbid condition resulting from exposure to an agent during the usual performance of one's occupation. ... Compare: industrial disease. ... (05 Mar 2000) ...

occupational diseases
Diseases due to factors involved in one's employment. ... (12 Dec 1998) ...

occupational exposure
The exposure to potentially harmful chemical, physical, or biological agents that occurs as a result of one's occupation. ... (12 Dec 1998) ...

occupational groups
Members of the various professions (e.g., physicians) or occupations (e.g., police). ... (12 Dec 1998) ...

occupational health
The promotion and maintenance of physical and mental health in the work environment. ... (12 Dec 1998) ...

occupational health nursing
The practice of nursing in the work environment. ... (12 Dec 1998) ...

occupational health services
Health services for employees, usually provided by the employer at the place of work. ... (12 Dec 1998) ...

occupational lung disease
Fibrosis and scarring of the lungs secondary to the repeated inhalation of dust associated with some occupation. ... Examples include silica, asbestos and coal dust exposure. ... (27 Sep 1997) ...

occupational medicine
<study> A branch of medicine concerned with the treatment of patients with occupational and environmental illness and injury. ... (09 Oct 1997) ...

occupational neurosis
Professional neurosis, a disorder of a group of muscles used chiefly in one's occupation, marked by the occurrence of spasm, paresis, or incoordination on attempt to repeat the habitual movements; e.g., writer's cramp; probably a focal dystonia. ... Synonym: craft palsy, functional spasm. ... (05 Mar 2000) ...

occupational spasm
Professional spasm, obsolete term for occupational dystonia. ... (05 Mar 2000) ...

occupational therapist
<specialist> An individual trained to help people manage the daily activities of living, such as dressing, grooming or cooking, and regaining vocational skills. ... (05 Mar 2000) ...

occupational therapy
A form of therapy that encourages and instructs manual activities for therapeutic or remedial purposes in mental and physical disorders. ... (27 Sep 1997) ...

occupations
Crafts, trades, professions, or other means of earning a living. ... (12 Dec 1998) ...

ocean
The great body of salt water that covers mores than two thirds of the surface of the earth, any of its five principal geographical divisions, the Atlantic, Pacific, Indian, Arctic, and Antartic. ... (09 Oct 1997) ...

ocean-type fish
An anadromous fish that shows no indication on its scales or other hard parts of an extended freshwater residence early in its life. ... (09 Oct 1997) ...

Oceanospirillum
A genus of motile, nonsporeforming, aerobic bacteria (family Spirillaceae) containing Gram-negative, rigid, helical cells which are 0.3 to 1.2 um in diameter. Motile cells contain bipolar fascicles of flagella. There is no growth anaerobically with nitrate. These organisms are chemoorganotrophic and possess a strictly respiratory metabolism; they n …

ochlophobia
<psychology> Morbid fear of crowds. ... Origin: G. Ochlos, a crowd, + phobos, fear ... (05 Mar 2000) ...

Ochoa
Severo, Spanish-U.S. Biochemist and Nobel laureate, *1905. ... See: Ochoa's law. ... (05 Mar 2000) ...

Ochoa's law
The content of the X-chromosome tends to be phylogenetically conserved. ... (05 Mar 2000) ...

ochratoxin A hydroxylase
<enzyme> Catalyzed by the cytochrome p450ia1 isoenzyme ... Registry number: EC 1.14.99.- ... Synonym: ochratoxin 4-hydroxylase ... (26 Jun 1999) ...

ochratoxins
Toxins produced by aspergillus ochraceus. Occurring widely, ochratoxins have been found as natural contaminants on storage grains, corn, peanuts, cottonseed, and decaying vegetation. They are produced by several other species of aspergillus as well as by penicillium viridicatum. ... (12 Dec 1998) ...

ochre
<chemical> A impure earthy ore of iron or a ferruginous clay, usually red (hematite) or yellow (limonite), used as a pigment in making paints, etc. The name is also applied to clays of other colours. ... A metallic oxide occurring in earthy form; as, tungstic ocher or tungstite. ... Origin: F.ocre, L. Ochra, fr. Gr, from pale, pale yellow. ... & …

ochre codon
The codon UAA, one of the three that causes termination of protein synthesis. The most frequent termination codon in E. Coli genes. ... (18 Nov 1997) ...

ochre mutation
Mutation that changes any codon to the termination codon UAA. ... (18 Nov 1997) ...

ochre suppressor
A gene that codes for an altered tRNA so that its anticodon can recognise the ochre codon and thus allows the continuation of protein synthesis. A suppressor of an ochre mutation is a tRNA that is charged with the amino acid corresponding to the original codon or a neutral substitute. Ochre suppressors will also suppress amber codons. ... (18 Nov 19 …

ochrea
A sheath, formed from two stipules, encircling the node. ... (09 Oct 1997) ...

ochrodermia
Yellow discoloration of the skin. ... Origin: G. Ochros, pale yellow, + derma, skin ... (05 Mar 2000) ...

ochrometer
An instrument for determining the capillary blood pressure; one of two adjacent fingers is compressed by a rubber balloon until blanching of the skin occurs, after which the force necessary to accomplish this colour change is read in millimeters of mercury. ... Origin: G. Ochros, pale yellow, + metron, measure ... (05 Mar 2000) ...

ochronosis
Deposition of dark brown pigment in cartilage, joint capsules and other tissues, usually as a result of alkaptonuria. ... (18 Nov 1997) ...

ochronotic
Relating to or characterised by ochronosis. ... (05 Mar 2000) ...

ochronotic arthritis
Osteoarthritis occurring as a complication of ochronosis. ... (05 Mar 2000) ...

Ochsner
Albert J., U.S. Surgeon, 1858-1925. ... See: Ochsner clamp, Ochsner's method. ... (05 Mar 2000) ...

Ochsner clamp
A straight haemostat with teeth. ... (05 Mar 2000) ...

Ochsner's method
An obsolete treatment for appendicitis (by peristaltic rest), when surgery is not advisable. ... (05 Mar 2000) ...

OCP
Oral contraceptive pill. Also known as the pill. ... (12 Dec 1998) ...

ocrase
<enzyme> Thrombolytic enzyme from aspergillus; combines with heparin to form a thrombolytic agent ... Registry number: EC 3.4.- ... (26 Jun 1999) ...

ocrylate
Octyl-2-cyanoacrylate;a tissue adhesive for surgery. ... (05 Mar 2000) ...

oct-
Eight. ... Origin: G. Okto, L. Octo ... (05 Mar 2000) ...

OCTA
An eight-base pair sequence in DNA that has a regulatory role; for example, if it is artificially appended to a gene, it will cause that gene to be preferentially expressed in cells of the beta-lymphocyte lineage. ... (05 Mar 2000) ...

octacosanoic acid
CH3-(CH2)26-COOH;a long-chain fatty acid; found in waxes. ... Synonym: montanic acid. ... (05 Mar 2000) ...

octamer binding protein
<protein> Transcription factor that binds to the octamer motif. ... Examples: mammalian proteins Oct 1, Oct 2. ... (18 Nov 1997) ...

octamer motif
A DNA motif found in certain promoters that can produce B-cell specific gene expression. Sequence: ATGCAAAT. ... (18 Nov 1997) ...

octamethyl pyrophosphoramide
Synonym for schradan ... C8H24N4O3P2;a potent irreversible organophosphate cholinesterase inhibitor used as an insecticide. It was prepared for potential use as a nerve gas. Poisoning produces a cholinergic crisis which can be fatal. ... Synonym: octamethyl pyrophosphoramide. ... Origin: Gerhard Schrader, Ger. Chemist, + -an ... (05 Mar 2000) ...

octamylamine
N-Isopentyl-1,5-dimethylhexylamine;an anticholinergic agent. ... (05 Mar 2000) ...

octan
Applied to fever, the paroxysms of which recur every eighth day, the day of a paroxysm being counted as the first in the computation. ... Origin: L. Octo, eight ... (05 Mar 2000) ...

octandioic acid
Synonym for suberic acid ... HOOC-(CH2)6-COOH;used in plastics and in the cross-linking of biopolymers; found in the urine as a product of &omega;-oxidation of fatty acids. ... Synonym: octandioic acid. ... Origin: L. Suber, cork oak, + -ic ... (05 Mar 2000) ...

octanes
Eight-carbon saturated hydrocarbon group of the methane series. Include isomers and derivatives. ... (12 Dec 1998) ...

octanoate
Synonym for caprylate ... A salt or ester of caprylic acid. ... Synonym: octanoate. ... (05 Mar 2000) ...