The parodontium & probing - The probe

6 important questions on The parodontium & probing - The probe

The cross- sectional view of the gingival tissues shows the relationships of the...?

  • Oral epithelium
  • Sulcular epithelium
  • Junctional epithelium
  • And the connective tissue

See the picture, name the different gingival shape that you see

  • A= blunted papillae
  • B= Bulbous papillae
  • C= Cratered papillae
  • D= Rolled, lifesaver-shaped, "McCall's festooons"

Which gingival recession do you see on the picture?

  • A= Stillman's cleft (v shaped)
  • B= Varying degrees of severity in relation to the mucogingival junction


exposure of root surface resulting from the apical migration of the JE exposing the CEJ
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Explain tooth eruption and the gums through the picture

  • A= before eruption, the oral epithelium covers the tooth
  • B= as the tooth comes out, the reduced epithelium joins the oral epithelium and the gingival sulcus starts to form
  • C= partial eruption - junctional epithelium (JE) located along the enamel
  • D= eruption complete - (JE) located at the cement-enamel junction
  • E= from disease or other cause, the attachment can migrate along the root surface, exposing the cementum

What are periodontal ligaments?

What are gingival fiber groups?

  • Fibrous connective tissue that surrounds and attaches the alveolar bone to the cementum
  • Inter- connection between bone and tooth
  • Allows for movement to distribute the chewing (masticatory) forces
  • Fibers inserted into the cementum on one side and the alveolar bone one on the other are called Sharpey's fibers


Fiber groups:
  • located around the cervical area within the gingival tissues
    • dentogingival fibers - free gingiva
    • alveogingival fibers - attached gingiva
    • circular fibers - around the neck of the tooth to help maintain the tooth in position
    • dentoperiosteal fibers - alveolar crest
    • transseptal fibers - running across the medial and distal areas between the teeth

Name the 5 groups of collagen fibers

  • Alveolar crest fibers
  • Horizontal fibers
  • Interradicular fibers
  • Oblique fibers
  • Apical fibers


= the dentoalveolar fiber groups

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