Test Your Knowledge on Enamel
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Questions and Answers

What is the main structural unit of enamel?

  • Dentin
  • Hydroxyapatite crystals
  • Enamel rods (correct)
  • Enamel protein
  • What is the primary component of enamel?

  • Organic material
  • Water
  • Inorganic material (correct)
  • Calcium
  • Which substance cements the enamel rods together?

  • Dentin
  • Hydroxyapatite crystals
  • Enamel protein
  • Interrod enamel (correct)
  • What is the purpose of dentin in relation to enamel?

    <p>It provides support for enamel</p> Signup and view all the answers

    What is the specific gravity of enamel?

    <p>2.8</p> Signup and view all the answers

    Which area of the tooth offers the greatest resistance due to gnarled enamel rods?

    <p>The incisal areas</p> Signup and view all the answers

    Which part of the tooth does enamel cover?

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

    What is the specific gravity of enamel?

    <p>2.8</p> Signup and view all the answers

    What provides support for enamel?

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

    What is the basic structural unit of enamel?

    <p>Enamel rods</p> Signup and view all the answers

    What is the composition of enamel?

    <p>96-98% inorganic material and 2-4% organic substance</p> Signup and view all the answers

    What type of enamel offers the greatest acid resistance due to containing more enamel protein and recrystallized hydroxyapatite crystals?

    <p>Enamel rod sheaths</p> Signup and view all the answers

    Which part of enamel offers the greatest resistance to cusps and incisal areas?

    <p>Gnarled enamel rods</p> Signup and view all the answers

    Can enamel undergo repair from carious lesions or trauma?

    <p>No</p> Signup and view all the answers

    Study Notes

    1. Enamel is the hardest biologic tissue and covers the anatomical crowns of teeth.
    2. Enamel needs dentin for support and provides the shape and contour of teeth.
    3. Enamel is non-vital tissue and does not undergo repair from carious lesions or trauma.
    4. Enamel is permeable to a certain extent and has a specific gravity of 2.8.
    5. Enamel is composed of inorganic material (96-98%) and organic substance (2-4%).
    6. Enamel rods are the basic structural unit of enamel and originate at the DEJ.
    7. Enamel rods have a highly organized pattern of tightly packed hydroxyapatite crystal orientation.
    8. Gnarled enamel rods offer the greatest resistance to the cusps and incisal areas.
    9. Enamel rod sheaths contain more enamel protein and recrystallized hydroxyapatite crystals for acid resistance.
    10. Interrod enamel is the substance that cements the rods together.

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    Description

    Test your knowledge on the hardest tissue in the human body - enamel! Learn about its composition, structure, and functions in teeth. From enamel rods to interrod enamel, discover the fascinating properties of this vital dental tissue. This quiz is perfect for anyone interested in dentistry or simply curious about the science behind teeth. Keywords: enamel, dentin, hydroxyapatite, structure, composition.

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