Perio: Gingiva Flashcards
Describe the composition and functions of epithelial tissue
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ET Junctions
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Describe the Interface between the epithelium and connective tissue. What does it look like and what is it’s purpose?
Interface
* Connection between oral
epithelium and the
connective tissue
* Appear as ridges, known as
‘rete pegs’ extend from
connective tissue into
epithelial layer
What is the difference between Keratinised and non keratinised epithelial cells?
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How is blood supplied to the epithelium?
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Anatomy of Gingiva + characterisics
Gingival fibre groups
Characteristics
* Rope-like
* Located coronal (toward crown) to the crest of
the alveolar bone
Functions
* Attaches JE to tooth
* Attaches free gingiva to cementum and bone
* Withstands frictional forces (holding free
gingiva against the tooth)
* Controls positioning (connects adjacent teeth)
What are the 3 anatomical areas of the Gingival epithelium. Describe each
Oral Epithelium (OE)
* Covers the outer surface of the free gingiva and attached gingiva
* Extends from the crest of the gingival margin to the mucogingival junction
Sulcular Epithelium (SE)
* Epithelial lining of sulcus
* Extends from crest of gingival margin to
the coronal edge of the Junctional
Epithelium (JE)
* Forms shallow ‘pocket’ or ‘cuff’ around
the tooth (usually 0.5 to 3 mm in depth)
* with periodontal disease, this space deepens
and the tissue becomes ulcerated
Junctional Epithelium (JE)
* Epithelium that forms the base
of the sulcus and joins the
gingiva to the tooth surface by
hemidesmosomes
* Easiest point of entry for
bacteria to invade connective
tissue of gingiva
* Gingiva has ability to repair
itself
JE function
Functions of the Junctional Epithelium
* Attaches gingiva to enamel and/or cementum of tooth
* Forms seal at base of gingival sulcus or pocket
* Serves as a protective barrier between plaque (biofilm) and
connective tissue of the periodontium
