| CR Length | Crown to Rump Length |
|---|---|
| CRL | Crown-Rump Length |
| AlCr | aluminum crown |
| CCEI | Crown-Crisp Experimental Index |
| CH | case history; Chediak-Higashi [syndrome]; chiasma; Chinese hamster; chloral hydrate; cholesterol; Ch... |
| PFM | Porcelain-fused-to-metal |
|---|---|
| CCEI | Crown Crisp Experiential Index |
| CRL | Crown rump length |
| CHL | Crown-heel length |
| CR | Crown-rump |
| jacket crown | A hollow crown of acrylic resin, fused porcelain or cast gold, combinations of gold and acrylic or gold and porcelain; it fits over the prepared stump of the natural crown. (05 Mar 2000) |
|---|---|
| porcelain | <botany> Purslain. A fine translucent or semitransculent kind of earthenware, made first in China and Japan, but now also in Europe and America; called also China, or China ware. "Porcelain, by being pure, is apt to break." (Dryden) Ivory porcelain, porcelain with a surface like ivory, produced by depolishing. See Depolishing. Porcelain clay. See Clay. <zoology> Porcelain crab, a cowry. Origin: F. Porcelaine, It. Porcellana, orig, the porcelain shell, or Venus shell (Cypraea porcellana), from a dim. Fr. L. Porcus pig, probably from the resemblance of the shell in shape to a pig's back. Porcelain was called after this shell, either on account of its smoothness and whiteness, or because it was believed to be made from it. See Pork. Source: Websters Dictionary (01 Mar 1998) |
| porcelain gallbladder | <radiology> Calcium incrustation of gallbladder wall, 0.6-0.8% of cholecystectomy patients, 80% female, 10-20% develop gallbladder carcinoma, 90% associated with gallstones findings: nonfunctioning gallbladder on oral cholecystogram, highly echogenic shadowing curvilinear sturucture in the gallbladder fossa (Differential diagnosis: stone-filled contracted gall bladder), echogenic gallbladder wall with little acoustic shadowing (Differential diagnosis: emphysematous cholecystitis), scattered irregular clumps of echoes with posterior acoustic shadowing (12 Dec 1998) |
| porcelain inlay | A fused porcelain restoration luted in a cavity prepared in a tooth. (05 Mar 2000) |
| dental porcelain | <chemical> A type of porcelain used in dental restorations, either jacket crowns or inlays, artificial teeth, or metal-ceramic crowns. It is essentially a mixture of particles of feldspar and quartz, the feldspar melting first and providing a glass matrix for the quartz. Dental porcelain is produced by mixing ceramic powder (a mixture of quartz, kaolin, pigments, opacifiers, a suitable flux, and other substances) with distilled water. Chemical name: Dental materials and fillings, porcelain (12 Dec 1998) |
| Minerva jacket | A plaster of Paris body cast incorporating the head and trunk, usually for fracture of the cervical spine. (05 Mar 2000) |
| Sayre's jacket | A plaster of Paris jacket applied while the patient is suspended by the head and axillae. (05 Mar 2000) |
| jacket | 1. A short upper garment, extending downward to the hips; a short coat without skirts. 2. An outer covering for anything, especially. A covering of some nonconducting material such as wood or felt, used to prevent radiation of heat, as from a steam boiler, cylinder, pipe, etc. 3. In ordnance, a strengthening band surrounding and reenforcing the tube in which the charge is fired. 4. A garment resembling a waistcoat lined with cork, to serve as a life preserver; called also cork jacket. Blue jacket. See Blue. Steam jacket, a space filled with steam between an inner and an outer cylinder, or between a casing and a receptacle, as a kettle. To dust one's jacket, to give one a beating. Origin: F. Jaquette, dim. Of jaque. See Jack. Source: Websters Dictionary (01 Mar 1998) |
| yellow jacket stings | Stings from yellow jackets and other large stinging insects such as bees, hornets and wasps can trigger allergic reactions of varying severity. Avoidance and prompt treatment are essential. In selected cases, allergy injection therapy is highly effective. (the three a's of insect allergy are adrenaline, avoidance and allergist.) (12 Dec 1998) |
| anatomical crown | The portion of a tooth covered with enamel. Synonym: corona dentis, anatomical crown. (05 Mar 2000) |
| artificial crown | A fixed restoration of the major part of the entire coronal part of a natural tooth; usually of gold, porcelain, or acrylic resin. (05 Mar 2000) |
| bell-shaped crown | A crown of a tooth with an exaggerated occlusogingival contour; human deciduous molars typify the bell-shaped crown. (05 Mar 2000) |
| radiate crown | A fan-shaped fibre mass on the white matter of the cerebral cortex, composed of the widely radiating fibres of the internal capsule; a single layer of columnar cells derived from the cumulus oophorus, which anchor on the pellucid zone of the oocyte in a secondary follicle. Synonym: radiate crown. (05 Mar 2000) |
| ciliary crown | The circular figure on the inner surface of the ciliary body, formed by the processes and folds (plicae) taken together. Synonym: ciliary crown, ciliary wreath. (05 Mar 2000) |
| clinical crown | That part of the crown of a tooth visible in the oral cavity. Synonym: corona clinica. (05 Mar 2000) |
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