Impression in Crown and Bridge Prosthodontics
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Questions and Answers

What is the primary purpose of an impression in crown and bridge prosthodontics?

  • To create a negative likeness of the teeth and surrounding oral tissues
  • To allow for accurate articulation of the cast and proper contouring of the restoration
  • To create a bubble-free impression of the prepared tooth
  • To accurately reproduce the preparation of the tooth and surrounding tissues (correct)
  • Which property of the impression material is important for capturing undercut regions on the external tooth surface?

  • Hydrophilicity
  • Ability to accurately duplicate the tooth preparation
  • Elasticity (correct)
  • Bubble-free nature
  • What is the role of hydrophilicity in an impression material used for crowns and bridges?

  • It allows the material to be easily removed from the mouth
  • It enhances the material's ability to capture surface detail (correct)
  • It helps the material to accurately reproduce the tooth preparation
  • It ensures the material is bubble-free when set
  • Why is it important for an impression to be bubble-free?

    <p>To prevent distortion of the impression, especially in the finish line area</p> Signup and view all the answers

    What is the purpose of reproducing the adjacent teeth and tissues in the impression?

    <p>To allow for accurate articulation of the cast and proper contouring of the restoration</p> Signup and view all the answers

    What is the primary characteristic of hydrophobic impression materials?

    <p>Poor surface wetting</p> Signup and view all the answers

    What property is essential for impression materials to ensure safe removal from the mouth?

    <p>Adequate tear resistance</p> Signup and view all the answers

    Which of the following is NOT a factor that can cause dimensional changes in impression materials?

    <p>Exposure to ultraviolet light</p> Signup and view all the answers

    What is the critical requirement for impression materials regarding the replication of intraoral structures?

    <p>Accurate dimensional stability</p> Signup and view all the answers

    Which property of impression materials is essential for accurately capturing fine details?

    <p>Accurate reproduction of details</p> Signup and view all the answers

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