Term
| Composition of basal lamina |
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Definition
| Collagen type IV - laminin (present on any epithelium or endothelium) |
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Term
| Blood supply to the gingiva |
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Definition
| Periodontal ligament vessels, alveolar blood vessels, supra periostium vessels |
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Term
| Composition of epithelial attachment |
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Definition
| Internal basal lamina and hemidesmosomes (attach the junctions epithelium to the tooth) |
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Term
| Composition of principal fibers of both the gingiva and periodontal ligaments |
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Definition
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Term
| Composition of elastic fibers and how do they differ from oxytalan fibers |
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Definition
Elastic fibers - elaunin, elastin, fibrilin
Oxytalan - fibrilin, NO elastin |
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Term
| Where does the proliferative cells occur in the junctional epithelium |
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Definition
Against the external layer of the gingiva connective tissue
(Junctional epithelium is a triangle up against the tooth - tooth, sulcular epithelium, gingiva connective tissue) |
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Term
| What are sharpey's fibers |
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Definition
| Extension of the principal fibers of the PDL embedded in the cementum and alveolar bone |
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Term
| Two types of cementum and 2 differences between them |
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Definition
Acellular - coronal, cementocytes, cell in matrix
Cellular - apical, no cell in matrix, grows faster, thicker in dimension, less radiopaque |
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Term
| Describe the structure of the alveolar process and the various portions into which it can be subdivided |
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Definition
Alveolar bone proper
Supportive alveolar bone (buccal & lingual cortical plates)
Supportive alveolar bone ( trabecular - spongy bone) |
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Term
| Differences between cementum and alveolar bone |
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Definition
Cementum (avascular, no innervation, no remodeling, resistant to resorption)
Alveolar bone (vascular, innervated, remodeling possible, not resistant to resorption) |
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Term
| what tissue comprises the masticatory mucosa |
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Definition
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Term
| what are the three parts of the gingiva |
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Definition
| marginal/free, attached, interdental papilla |
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Term
| what is the mucogingival junction |
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Definition
| separates the attached gingiva from the alveolar mucosa |
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Term
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Definition
| part of the gingiva that connects the 2 halves of the interdental papilla directly underneath the contact area between the teeth |
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Term
| what is the free gingival groove |
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Definition
| junction between the marginal and attached gingiva |
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Term
| what tissue is gingiva composed of microscopically |
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Definition
| stratified squamous epithelium and gingival connective tissue |
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Term
| name the layers (in proper sequence)found in the gingiva epithelium |
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Definition
| stratum - cornea, granulosum, spinosum, germinativum |
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Term
| non-keratinocytes that are found in the gingival epithelium |
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Definition
| langerhans, merkel cells, melanocytes |
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Term
| what comprises the dentogingival unit |
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Definition
| junctional epithelium and gingival connective tissue attachment |
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Term
| similarities between the sulcular epithelium and the junctional epithelium |
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Definition
DIFFERENCES: Junctional (2 basal lamina, more permeable, few layers, firmly attached to the tooth) Sulcular (less permeable, more layers, space between the tooth, 1 basal lamina)
SIMILARITIES: both touch the tooth inside the gingiva, they are non-keratinized, both are stratified squamous epithelium |
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Term
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Definition
| inflammation of the gingiva |
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Term
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Definition
| inflammation of the gingiva, pdl , bone and cementum |
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Term
| what are the 3 histopathologic stages of gingivitis |
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Definition
| initial lesion, early lesion, established lesion |
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Term
| name which cell types predominate in each state of gingivitis |
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Definition
inital - PMNs
early - T lymphocytes
established - B cell and plasma cells |
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Term
| name 2 inflammatory mediators responsible for INCREASED VASCULAR SUPPLY |
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Definition
histamine and PGE2
also interleukin 1, TNF alpha, bradykinin, PAF |
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Term
| name 2 inflammatory mediators responsible for INCREASED VASCULAR PERMEABILITY |
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Definition
| bradykinin, serotonin, PGE2, interleukin 1, LB4 & LD4, C5a |
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Term
| name 2 inflammatory mediators responsible for migration and phagocytosis by PMN |
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Definition
interleukin 1 and C5a
also NCF, IL 8, LB4 |
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Term
| name 4 cytokines with destroying periodontium activity |
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Definition
| IL-1, C5a, NCF, Il-8, LB4, PGE2, TNF alpha |
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Term
| 4 antiinflammatory mediators |
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Definition
| IL-4, IL-10, TIMP, IL-1 receptor antagonist |
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Term
| describe a periodontal pocket |
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Definition
| inflammed sulcus greater than or equal to 4mm, extended gingival sulcus apical to the CEJ, destruction of connective tissue attachment loss |
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Term
| describe a gingival sulcus |
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Definition
| depth 3mm or less, its the space between the tooth and the marginal gingiva present in health and diseased state |
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Term
| describe a gingival pocket |
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Definition
| inflammed sulcus greater than or equal to 4mm coronal to CEJ due to swelling of the soft tissue |
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Term
| 4 characteristics of gingiva that are monitored for change from the healthy state to the diseased state |
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Definition
| color, consistency, texture, morphology |
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