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coronal to the margin of the free gingiva
supra biofilm
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apical to the margin of the gree gingiva
subgingival biofilm
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salivary glycoprotein forms pellicle; microorganisms from saliva selectively attach to pellicle
supra biofilm
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down growth of bacteria from supra biofilm
subgingival biofilm
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proximal and other protected areas; cervical third; lining mand molars; pit and fissures
supra biofilm
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covers cal; pocket wall
subgingival biofilm
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attaches to acquired pellicle, other bacteria, tooth surfaces; unattached: loose washes away
supra biofilm
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tooth surface, subgingival pellicle, calc, subgingival flora: loose floating,motile, btw adherent biofilm on tooth and pocket epithelium
subgingival biofilm
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rough surfaces, malpositioned teeth, and carous lesions serve as retention for what biofilm?
supra biofilm
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pocket holds biofilm against tooth; overhangning restoration margins extending subgingivally serve as retention sites for what type of biofilm?
subgingival
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friction of tongue, cheek, lips, limits shape and size; thicker at cervical third and proximal; healthy: 15-20 cells thick; chronic gingivitis: 100-300 cells thick
supra biofilm
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molded by pocket wall, follows form of subgingival calc, becomes thicker as pocket wall loosens
subgingival biofilm
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adherent, densely packed microbial layer; intermicrobial matrix; begins with small isolated colonies, merging to form covering
supra biofilm
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3 layers: tooth-surfaced attached: gram-positive rods and cocci
unattached: gram-negative, motile, spirochetes, leukocytes
epithelium-attached: gram negative, motile, many leukocytes migrate through epithelium
subgingival biofilm
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Early biofilm: gram-positive cocci
3-4 days: filaments and fusiforms
4-9 days: complex flora w/rods, filamentous forms
7-14 days: vibrios, spirochetes, gram negative organisms
supra biofilm
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anaerobic population
disease pocket: gram negative, motile, spirochetes rods
subgingival biofilm
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saliva ingested food are sources of nutrients for what type of biofilm?
supragingival
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gingival sulcus fluid, exudate, and leukocytes are sources of nutrients for what type of biofilm?
subgingival
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etiology of gingivitis, supragingival calc, and dental caries are significancies of what type of biofilm?
supragingival
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etiology of gingivitis, perio infections, and subgingival calc are significancies of what type of biofilm?
subgingival
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