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Flashcards in Chapter 3 Deck (10)
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Define pathogenesis

the sequence of events that occur during the development of a disease or abnormal condition


Define periodontal disease

inflammation of the periodontium


Contrast periodontal disease with periodontitis

periodontitis is one of the two categories of periodontal disease; the other is gingivitis


Define periodontisis

bacterial infection of all parts of the periodontium including the gingiva, periodontal ligament, bone, and cementum


Define gingivitis

bacterial infection that is confined to the gingiva; type of periodontal disease characterized by changes in the color, contour, and consistency of gingival tissues


Periodontium, clinical and histologic, in Health

Pink; gingival margin - scalloped, above (coronal to) CEJ; papillae - firm, occupy embrasures apical to contact areas; no BOP; probing depths from 1-3 mm.
JE firmly attached by hemidesmosomes to enamel coronal to CEJ; epi-conn tissue jct - no epithelial ridges; gingival fibers intact; alveolar bone intact and 2-3 mm below (apical to) JE; PDL fibers intact; cementum is normal


Periodontium, clinical and histologic, in Gingivitis

Red or reddish blue; GM - swollen and loses knife-edge and even more coronal to CEJ; papillae - bulbous and swollen; BOP on gentle probing; probing depths 3+ mm and NO apical migration of junctional epithelium.
Still attached by hemidesmosomes; epi-conn tissue jct - extends epithelial ridges down into the connective tissue (wavy) from destruction of gingival fibers; alveolar bone intact; PDL fibers intact; cementum is normal ** REVERSIBLE


Periodontium, clinical and histologic, in Periodontitis

spongy tissue (edematous) bluish- or purplish red with smooth, shiny appearance OR light pink with leathery consistency (fibrotic tissue); GM - swollen or fibrotic, no knife-edge; recession; Interdental papillae -


Acute gingivitis vs Chronic gingivitis

lasts for a short period of time vs for months or years; some fluid in gingival connective tissues, swollen and red gingiva vs formation of new collagen fibers, enlarged and leathery tissues, concealed redness from fibrosis


Periodontitis, characteristics

apical migration of JE; loss of connective tissue attachment; loss of alveolar bone; ** PERMANENT