Dental Biomaterials: Types of Bonds and Polymorphism
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Questions and Answers

What is polymorphism in the context of dental biomaterials?

  • Same chemical, different crystalline forms (correct)
  • Different chemical, same crystalline form
  • Different chemical, different crystalline forms
  • Same chemical, same crystalline form
  • Which type of bond is characterized by theoretical strength being higher than actual strength?

  • Secondary
  • Covalent
  • Ionic
  • Primary (correct)
  • In dentistry, what does a 'denture base' primarily consist of?

  • Gold alloy IV
  • Porcelain
  • Metallic cobalt chromium
  • Non-metallic acrylic resin (correct)
  • What does the fraction of space occupied by atoms in a unit cell represent?

    <p>Atomic packing factor</p> Signup and view all the answers

    What is the primary component of a denture base in dental applications?

    <p>Acrylic resin</p> Signup and view all the answers

    What material is commonly used for 'artificial teeth' in dental applications?

    <p>Acrylic resin</p> Signup and view all the answers

    Which type of bond is characterized by theoretical strength being higher than actual strength?

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

    What does polymorphism refer to in the context of dental biomaterials?

    <p>Same chemical, different crystalline forms</p> Signup and view all the answers

    What does the fraction of space occupied by atoms in a unit cell represent?

    <p>Atomic packing factor</p> Signup and view all the answers

    'Artificial teeth' in dental applications are commonly made of which material?

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

    Study Notes

    Dental Biomaterials

    • Polymorphism in dental biomaterials refers to the ability of a material to exist in multiple crystalline forms.

    Bonding in Dental Materials

    • Theoretical strength of a bond can be higher than its actual strength due to the presence of defects, which characterizes a brittle bond.

    Denture Bases

    • A denture base primarily consists of a resin, such as acrylic or polyamide.

    Crystal Structures

    • The fraction of space occupied by atoms in a unit cell represents the packing density or atomic packing factor (APF).

    Dental Applications

    • The primary component of a denture base in dental applications is a resin, such as acrylic or polyamide.
    • Artificial teeth in dental applications are commonly made of porcelain.

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    Description

    Test your knowledge of dental biomaterials with a quiz on types of bonds and polymorphism. Learn about primary and secondary bonds, theoretical vs. actual strength, and the concept of polymorphism.

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