Periodontium Part 4: Periodontal Tissue and Root Development
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Questions and Answers

At which stage of embryonic development does the bud stage occur?

  • 7th week
  • 10th week
  • 9th week
  • 8th week (correct)

    • What is the origin of cementoblasts, fibroblasts, osteoblasts, and other cells needed to make the periodontium?

  • Dental papilla
  • Dental follicle (correct)
  • Enamel organ
  • Ectomesenchyme

    • What is the structure made of ectomesenchymal cells surrounding a developing tooth?

  • Dental follicle (correct)
  • Enamel organ
  • Cementum
  • Dental papilla

    • What is the term for the development stage when the enamel organ resembles a bell-shaped structure?

    <p>Bell stage</p> Signup and view all the answers

    What is the role of the dental follicle in tooth development?

    <p>Gives rise to cementum, PDL, and alveolar bone</p> Signup and view all the answers

    At which stage of tooth development does the enamel organ resemble a small group of cells?

    <p>Bud stage</p> Signup and view all the answers

    What is the primary structure formed during crown formation that will persist during root formation?

    <p>Cervical loop</p> Signup and view all the answers

    What is the role of HERS in dentine formation?

    <p>Induces dentine formation on the pulp-side</p> Signup and view all the answers

    What is the outcome of HERS breaking down into a network of epithelial cells?

    <p>Initiation of cementum formation</p> Signup and view all the answers

    What is the function of the epithelial rests of Malassez?

    <p>Not specified in the text</p> Signup and view all the answers

    What is the structure that forms when the cervical loop collapses?

    <p>Hertwig's Epithelial Root Sheath (HERS)</p> Signup and view all the answers

    What is the stage at which the dental follicle is involved in periodontal tissue development?

    <p>During root formation</p> Signup and view all the answers

    What allows dental follicle cells to differentiate into cementum-producing cells?

    <p>The breakup of HERS</p> Signup and view all the answers

    What is the likely origin of osteoblasts involved in alveolar bone development?

    <p>Dental follicle cells</p> Signup and view all the answers

    What is the function of cementoblasts in periodontal tissue development?

    <p>To form cementum along the root dentine</p> Signup and view all the answers

    What is the result of the breakup of HERS in periodontal tissue development?

    <p>The differentiation of cementoblasts from dental follicle cells</p> Signup and view all the answers

    What is the role of the dental follicle in periodontal tissue development?

    <p>To differentiate into cementoblasts and osteoblasts</p> Signup and view all the answers

    What structures are formed when cementum-producing cells trap collagen fiber bundles from the developing PDL?

    <p>Sharpey's fibers</p> Signup and view all the answers

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