Dental Impression Materials 2

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Questions and Answers

What is the main use of impression compound?

  • Making impressions of soft tissue for prosthetic dentistry
  • Making impressions of edentulous mouth (correct)
  • Making impressions for orthodontic appliances
  • Making impressions of teeth for crowns and bridges

Which component of impression compound acts as a plasticizer?

  • Waxes
  • Stearic acid (correct)
  • Natural or synthetic resin
  • Diatomaceous earth

How does impression compound set?

  • Electrochemical reaction
  • Chemical reaction
  • Physical change (correct)
  • Biological process

What is the function of waxes in impression compound?

<p>Provides thermoplasticity (C)</p> Signup and view all the answers

Which material reduces flow at mouth temperature in impression compound?

<p>Diatomaceous earth (D)</p> Signup and view all the answers

What is the classification of impression compound?

<p>Inelastic and hydrophobic (D)</p> Signup and view all the answers

How does impression compound behave when heated?

<p>It softens (C)</p> Signup and view all the answers

What is the alternative name for impression compound?

<p>Both a and b (C)</p> Signup and view all the answers

What is the primary use of impression compound?

<p>Making impressions of edentulous mouth (C)</p> Signup and view all the answers

Which component of impression compound provides thermoplasticity and gives the qualities of flow and cohesion?

<p>Natural or synthetic resin (C)</p> Signup and view all the answers

What is the function of waxes in impression compound?

<p>Provide thermoplasticity and characterize the softening temperature (A)</p> Signup and view all the answers

How does impression compound behave when heated?

<p>It softens (C)</p> Signup and view all the answers

Which material acts as a plasticizer in impression compound to improve plasticity and workability?

<p>Stearic acid, shellac, and gutta-percha (C)</p> Signup and view all the answers

Which component of impression compound acts as a filler to increase strength and reduce flow at mouth temperature?

<p>Diatomaceous earth, French chalk, or talc (C)</p> Signup and view all the answers

What is the classification of impression compound based on its behavior when heated and cooled?

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

What is the alternative name for impression compound?

<p>Dental plasticine (C)</p> Signup and view all the answers

What is the main setting reaction mechanism of impression compound?

<p>Physical change (D)</p> Signup and view all the answers

What is the main function of natural or synthetic resin in impression compound?

<p>Provides thermoplasticity and gives the qualities of flow and cohesion (A)</p> Signup and view all the answers

Which material in impression compound acts as a plasticizer to improve plasticity and workability?

<p>Stearic acid, shellac, and gutta-percha (D)</p> Signup and view all the answers

What is the primary use of impression compound?

<p>Making impression of edentulous mouth (primary impression) (C)</p> Signup and view all the answers

Which component of impression compound reduces flow at mouth temperature?

<p>Diatomaceous earth, French chalk, or talc (B)</p> Signup and view all the answers

What is the behavior of impression compound when heated?

<p>It softens without occurrence of a chemical reaction (A)</p> Signup and view all the answers

Which component of impression compound provides thermoplasticity and gives the qualities of flow and cohesion?

<p>Natural or synthetic resin (Copal resin, rosin) (A)</p> Signup and view all the answers

What is the classification of impression compound based on its behavior when heated and cooled?

<p>Inelastic, hydrophobic, mucocompressive (A)</p> Signup and view all the answers

What is the main setting reaction mechanism of impression compound?

<p>Physical change (C)</p> Signup and view all the answers

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