Dental Materials Properties
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Questions and Answers

Dental impression materials exhibit very less ______ deformation when they are subjected to bending or tensile stresses.

elastic

Impression materials fracture without exhibiting any ______ deformation if the stress from applied pressure exceeds their tensile, shear, or compressive strength values.

plastic

Impression compound is a ______ material that softens by heat and becomes rigid when cooled.

thermoplastic

Impression compound is supplied as a ______ or stick.

<p>sheet</p> Signup and view all the answers

When impression compound is heated in a hot water bath, the material starts to soften at approx. ______°C.

<p>39</p> Signup and view all the answers

Impressions with compound should be made above the temperature of ______ °C.

<p>55 to 65</p> Signup and view all the answers

The material is ______ when cooled.

<p>Brittle</p> Signup and view all the answers

ZOE impression material is popular for making ______.

<p>complete dentures</p> Signup and view all the answers

The composition of ZOE includes ______, eugenol, and filler.

<p>ZnO</p> Signup and view all the answers

Some patients are irritant to ______.

<p>eugenol</p> Signup and view all the answers

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