Periodontium and Its Components
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Questions and Answers

Which part of the periodontium directly protects the underlying tissues?

  • Periodontal ligament
  • Gingivae (correct)
  • Cementum
  • Alveolar bone

    • What are the tissues included in the periodontium?

  • Gingivae, enamel, dentin, and pulp
  • Periodontal ligament, enamel, dentin, and pulp
  • Gingivae, periodontal ligament, cementum, and alveolar bone (correct)
  • Enamel, dentin, pulp, and alveolar bone

    • What is the depth range of the gingival sulcus in health around a fully erupted tooth?

  • Between 2 and 5 mm
  • Between 0.1 and 1 mm
  • Between 1 and 4 mm
  • Between 0.5 and 3 mm (correct)

    • What type of oral epithelium appears paler pink in the gingivae?

    <p>Keratinised epithelium</p> Signup and view all the answers

    Which one of these is NOT a function of gingival fibers?

    <p>Supporting blood supply to the tooth</p> Signup and view all the answers

    Where is the gingival margin usually located in a healthy mouth?

    <p>Coronal to the cement-enamel junction</p> Signup and view all the answers

    What are the anatomical divisions of the gingivae?

    <p>Marginal, attached, and interdental areas</p> Signup and view all the answers

    Which part of the periodontium serves as support for the fibers of the periodontal ligament?

    <p>Cementum and alveolar bone</p> Signup and view all the answers

    In certain ethnic groups, what is a characteristic feature of the gingivae?

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

    What is the appearance of healthy gingivae?

    <p>Pink and firm with a knife-edge appearance</p> Signup and view all the answers

    What is the primary function of cementum?

    <p>To form the outer covering of the anatomic root</p> Signup and view all the answers

    What is the width range of the periodontal ligament?

    <p>0.15 to 0.38 mm</p> Signup and view all the answers

    Which constituent is NOT part of the periodontal ligament?

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

    Which is a type of cementum classified by location?

    <p>Radicular cementum</p> Signup and view all the answers

    Where is acellular cementum primarily found on the tooth?

    <p>Cervical third of the root</p> Signup and view all the answers

    What are glycosaminoglycans a part of within the periodontal ligament?

    <p>Ground substances</p> Signup and view all the answers

    When is cellular cementum formed?

    <p>After the tooth reaches the occlusal plane</p> Signup and view all the answers

    What is the alveolar bone primarily responsible for?

    <p>Supporting the tooth sockets</p> Signup and view all the answers

    Which element is not included in the attachment apparatus of the teeth?

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

    Which of the following is a function of cementum?

    <p>Maintaining teeth in functional occlusion</p> Signup and view all the answers

    What is the main function of the jaw bones?

    <p>To distribute and reabsorb forces generated by mastication and other tooth contact</p> Signup and view all the answers

    What is the portion of the jaw bone located apically but unrelated to the teeth?

    <p>Basal bone</p> Signup and view all the answers

    What is the thin lamella of bone that surrounds the root of the tooth?

    <p>Alveolar bone proper</p> Signup and view all the answers

    What is the function of the cortical plates?

    <p>To form the outer and inner plates of the alveolar bone</p> Signup and view all the answers

    What is the term for the denuded areas that extend through the marginal bone?

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

    What is the term for the isolated areas in which the root is denuded of bone and marginal bone is intact?

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

    What is the term for the bone that fills the area between the cortical plates and alveolar bone proper?

    <p>Spongy bone</p> Signup and view all the answers

    What is the effect of the teeth being in extreme buccal or lingual version on the alveolar process?

    <p>It makes the alveolar process extremely thin or missing on that side of the teeth</p> Signup and view all the answers

    What is the term for the bone that surrounds the alveolar bone proper and gives support to the socket?

    <p>Supporting alveolar bone</p> Signup and view all the answers

    What is the term for the fibers that attach to the alveolar bone proper?

    <p>Principal fibers</p> Signup and view all the answers

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