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impression |
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impressionAn 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. impression Dentistry an imprint of the teeth and gums, esp in wax or plaster, for use in preparing crowns, inlays, or dentures 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. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Objectives: To determine how tray rigidity and impression technique affect the accuracy of impressions made with an addition polymerizing silicone. So let's examine common impression techniques to determine if there are any steps that might improve the process. For the P impression technique, we placed each subject on her stomach and then used the same method described by McPoil and Brocato [9] to obtain the neutral foot impression. |
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