impression

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impression

Dentistry an imprint of the teeth and gums, esp in wax or plaster, for use in preparing crowns, inlays, or dentures
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

impression

[im′presh·ən]
(geology)
A form left on a soft soil surface by plant parts; the soil hardens and usually the imprint is a concave feature.
(graphic arts)
A print made from an engraved plate.
A press run or printing of a book.
(metallurgy)
A machined cavity in a forging die for production of a specific geometric shape in the workpiece.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

impression

An advertisement on a Web page. If ads on the Web are not based on a click-through rate (CTR), they are typically sold on a cost per thousand (CPM) basis. One impression is one banner ad displayed on one page. Also called a "view" or "ad view." See banner ad, interstitial ad, pay-per-click and click-through rate.
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References in periodicals archive ?
Dental impressions and casts can be effectively disinfected by the use of liquid or gaseous chemicals.
We use CBCT images scanned from a dental maxillary (or mandibular) plaster model or a dental impression. These images are stacked transversely direction to represent the volume and geometry of the oral cavity in three dimensions.
Impression Materials: Materials used for dental impressions are usually safe.
Effects of chemical disinfectant solutions on the stability and accuracy of the dental impression complex.
(1) Causes include the escape of teeth and dental impression material through an oroantral fistula, penetrating trauma, and iatrogenic causes.
The technology can be used as a dopant for composite materials including dental impression and wound care materials and biomedical cements.
(13.) Maria del Pilar Rios et al .Effects of chemical disinfectant solutions on the stability and accuracy of the dental impression complex.
William Wilding received a patent for the use of algin as a dental impression material.
The mark matched his dental impression and excluded other potential carers for the girl.
In this way, the objective of this study was to analyze the linear dimensional changes of those dental impression materials.