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34 Cards in this Set
- Front
- Back
SUPRABONY POCKETS |
occurs when there is a horizontal bone loss |
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INFRABONY POCKETS |
occurs when there is vertical bone loss
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VIRULENT |
species of bacteria that are capable of causing disease, another term for pathogenic |
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CELL MEMBRANE |
a tough protective layer that encloses nearly all bacteria |
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GRAM STAINING |
a lab method that reveals differences in the chemical and physical properties of bacterial cell membranes |
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GRAM-POSITIVE BACTERIA |
stain purple, single thick cell membrane, associated with periodontal health |
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GRAM-NEGATIVE BACTERIA |
stain red, double cell membranes, believed to play a role in the tissue destruction seen in periodontitis |
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AEROBIC-BACTERIA |
bacteria that live in the presence of oxygen |
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ANAEROBIC-BACTERIA |
bacteria that cannot live in the presence of oxygen |
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FACULTATIVE ANAEROBIC BACTERIA |
bacteria that can exists with or with out oxygen |
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BIOFILM |
a well organized community of bacteria that adheres to a surface and is embedded in an extracellular slime layer, forms rapidly on almost any surface that is wet |
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EXTRACELLULAR SLIME LAYER |
a protective barrier that surrounds the mushroom shaped microcolonies and protects them from antibiotics, antimicrobials, and immune response |
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NON-MOTILE |
bacteria not capable of movement, most bacteria are non motile |
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A.actinomycetemcomitans |
microorganism strongly associated with aggressive periodontitis. capable of evading host immune response and of destroying gingival connective tissue and bone. |
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T. forsythia |
microorganism associated with periodontitis, most significant risk factor, most common in periodontal pockets. |
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P. gingivalis |
found in low numbers in health/gingivitis and in higher numbers in periodontitis. Inhibits the migration of leukocytes across epithelial barrier. Induces elevated host immune response |
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MIXED INFECTION |
"bacterial soup", perio disease is not caused by one organism, but a mixture |
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TRANSMISSION |
transfer of perio pathogens from the oral cavity of one person to another |
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COMMUNICABLE |
a disease that may be passed from one person to another by direct or indirect contact, via inanimate objects |
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ACQUIRED PELLICLE |
a film that forms over the tooth, composed of a variety of salivary glycoproteins (mucins) and antibodies |
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FIMBRAE |
hair-like structures found on some bacteria, it enables rapid attachment upon contact with the tooth surface |
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BACTERIAL BLOOMS |
periods when specific species or groups of species grow at rapidly accelerated rates |
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FLUID FORCES |
of the saliva surrounding the biofilm, it influences the shape of the biofilm as well as the spatial arrangement of the bacteria inside |
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FLUID CHANNELS |
penetrate the extracellular slime layer, directs fluids in and around the biofilm, brining nutrients and oxygen, and carrying away wasted products |
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COAGGREGATION |
the cell-to-cell adherence of one oral bacteria to another |
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TOOTH-ASSOCIATED PLAQUE BIOFILM |
bacteria that are attached to the tooth surface |
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TISSUE-ASSOCIATED PLAQUE BIOFILM |
bacteria that are attached to the epithelium |
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UNATTACHED BACTERIA |
free floating bacteria that are not part of the biofilm |
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VIRULENCE FACTORS |
mechanisms that enable biofilm bacteria to colonize and invade the tissues of the periodontium |
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PETIDES |
short chains of amino acids found in living bacterial cell membranes that control the transport of molecules in and out of the bacterial cell |
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EXOTOXIN |
harmful proteins released from the bacterial cell that act on the host cells at a distance |
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LEUKOTOXIN |
an exotoxin that may enable bacteria to destroy leukocytes in the sulcus or pocket |
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BACTERIAL ENZYMES |
agents that are harmful or destructive to host cells |
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DORMANT BACTERIA
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bacteria in an inactive state in order to survive adverse environmental conditions
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