Dental Impression Trays Quiz
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Questions and Answers

Which type of material is a stock tray typically made of?

  • Acrylic
  • Shellac
  • Metallic (correct)
  • Impression compound

What is the primary function of a special tray in dentistry?

  • Taking primary impressions
  • Constructing indirect restorations
  • Taking secondary impressions (correct)
  • Fabricating dental models

What is an important requirement of ideal impression materials?

  • High cost
  • Strong odor
  • Low dimensional accuracy
  • Compatibility with die and cast materials (correct)

Which characteristic is NOT a property of ideal impression materials?

<p>Expensive (A)</p> Signup and view all the answers

What type of impression material sets by chemical reaction?

<p>Impression compound (D)</p> Signup and view all the answers

In what situations are rigid (inelastic) impression materials typically used?

<p>In areas with undercuts (C)</p> Signup and view all the answers

What is the purpose of fillers in impression compound in dentistry?

<p>Provide body and suitable working consistency (B)</p> Signup and view all the answers

What type of reaction occurs in impression compound used in dentistry?

<p>Reversible reaction (D)</p> Signup and view all the answers

Why is it important for impression compound in dentistry to soften upon heating and harden upon cooling?

<p>To facilitate the impression-taking process (B)</p> Signup and view all the answers

What property of impression compound is essential for tracing the borders of an acrylic special tray?

<p>Minimum flow at mouth temperature (A)</p> Signup and view all the answers

How does the flow of impression compound used in dentistry compare between impression compound and tray compound?

<p>Flow is lower in tray compound than impression compound (B)</p> Signup and view all the answers

Which component of impression compound primarily acts as a stabilizer and controls consistency?

<p>Plasticizer (A)</p> Signup and view all the answers

What is the main characteristic of impression compound?

<p>It is a thermoplastic impression material that softens by heat and hardens by cooling (B)</p> Signup and view all the answers

Which type of impression compound has a lower softening temperature?

<p>Type I (impression compound) (A)</p> Signup and view all the answers

Which of the following is a use of impression compound?

<p>Carrying other impression materials (wash impression) (A)</p> Signup and view all the answers

What is the physical form in which impression compound is typically presented?

<p>As cakes, sticks, and large pieces (D)</p> Signup and view all the answers

What is the main difference between Type I and Type II impression compounds?

<p>Type I has a lower softening temperature compared to Type II (D)</p> Signup and view all the answers

What is the primary purpose of using impression compound?

<p>To record primary impressions for edentulous patients (A)</p> Signup and view all the answers

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