Dental Alloys and Crystal Structure
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Questions and Answers

Why is a small grain size generally more desirable in an alloy?

  • To make the alloy easier to cast
  • To ensure uniform properties of the alloy (correct)
  • To increase the melting range of the alloy
  • To reduce the stiffness of the alloy
  • What is the purpose of adding grain refiners to gold-based alloys?

  • To lower the density of the alloy
  • To reduce the grain size (correct)
  • To enhance the color of the alloy
  • To increase the stiffness of the alloy
  • In terms of hardness, why is a softer restoration preferable for cutting or adjustment?

  • To make polishing easier (correct)
  • To avoid distortion or fracture
  • To resist scratching
  • To lower the wear on opposing teeth
  • Why is a high modulus (stiffness) important for certain restorations?

    <p>To prevent distortion or fracture due to flexure</p> Signup and view all the answers

    How does the melting range of an alloy affect its ease of casting?

    <p>Higher melting ranges make casting more difficult</p> Signup and view all the answers

    What role does the density of an alloy play in determining its cost?

    <p>Restorations containing higher density alloys are more expensive</p> Signup and view all the answers

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