Test Your Knowledge on Enamel
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Questions and Answers

What is the primary composition of enamel?

  • 96-98% organic material and 2-4% inorganic material
  • 98-99% inorganic material and 1-2% organic material (correct)
  • 50% organic material and 50% inorganic material
  • 70% inorganic material and 30% organic material

    • What is the primary composition of enamel?

  • 96-98% organic material and 2-4% inorganic material
  • 96-98% inorganic material and 2-4% organic material (correct)
  • 50% organic material and 50% inorganic material
  • 75% organic material and 25% inorganic material

    • What is the basic structural unit of enamel?

  • Enamel sheaths
  • Hydroxyapatite crystals
  • Enamel rods (correct)
  • Interrod enamel

    • What is the function of enamel?

    <p>To provide the shape and contour of teeth</p> Signup and view all the answers

    Which type of enamel rods offer the greatest resistance to the cusps and incisal areas?

    <p>Gnarled enamel rods</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 statement about enamel repair is true?

    <p>Enamel is non-vital tissue and does not undergo repair from carious lesions or trauma</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 specific gravity of enamel?

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

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

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

    What provides support for enamel?

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

    What is the function of enamel rod sheaths?

    <p>To contain more enamel protein and recrystallized hydroxyapatite crystals for acid resistance</p> Signup and view all the answers

    What is the substance that cements enamel rods together?

    <p>Interrod enamel</p> Signup and view all the answers

    Which part of the tooth is non-vital tissue and does not undergo repair from carious lesions or trauma?

    <p>Enamel</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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