PER 1001 Unit 1

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1

four principle components of normal periodontium

  1. gingiva
  2. periodontal ligament
  3. cementum
  4. alveolar bone
2

three zones of the oral mucosa

  1. masticatory mucosa (the gingiva and covering of the hard palate)
  2. specialized mucosa (the dorsum of the tongue)
  3. the oral mucous membrane (the remainder of the oral cavity)
3

three divisions of gingiva

  1. marginal
  2. attached
  3. interdental
4

marginal gingiva (free gingiva)

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  1. is the border of the gingiva that surrounds the teeth in collar-like fashion
  2. forms the soft tissue wall of the gingival sulcus
  3. runs parallel to the cemantoenamel junction (CEJ)
5

free gingival groove

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  1. a shallow depression demarcating the marginal gingiva from the attached gingiva;
  2. not commonly observed, only occurring in about 50% of cases.
6

attached gingiva

  1. the firm, dense, stippled gingiva bound to the underlying tooth and bone
  2. extends from the free gingival groove to the mucogingival junction
  3. normally widest in the incisor region, narrowing in the posterior segments.
7

stippling

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  1. a pitted orange peel appearance sometimes seen on attached gingiva; absent on marginal gingiva
  2. only present in about 40% of the adult population; it is absent in infancy
  3. commonly thought of to be a sign of gingival health, although current research disagrees
8

alveolar mucosa

Alveolar mucosa is: