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47 Cards in this Set
- Front
- Back
OE continuous with JE
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Pristine gingiva
|
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Pristine gingiva %
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JE 10
CT 60 OE 30 |
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PMNs are present in pristine gingiva
|
TRUE
PMNs are still present in healthy gums |
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Compare JE to CT in pristine gingiva
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JE is thin
CT is dense |
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subep loops vs dental plexus loops in pristine gingiva
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sub ep loops are constant
dentogingival plexus no loops |
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initial lesion
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CLINICALLY HEALTY
|
|
carbon particles leak out of vessels
|
initial lesion
|
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transudate
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health
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exudate
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disease
|
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crevicular fluid
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flow rate increases with inflammation
|
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how do PMNs get to the sulcus
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through the JE
|
|
bacterial chemo attractors
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LPS, fMetLeuPhe
|
|
Vascular Events Initial lesion
|
dialation
Increased permiability gaps between capillary and endothelial cells intercellular junctions close |
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ICAM-1
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P selectin
CD 11 a knocked out mice show decreased PMN migration |
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ELAM-1
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CD62E
double knocked out mice show succeptibility to pyogenic bacterial infections |
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Reasons for ginigival stability
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SEC APG
shedding epithelial barrier compliments antimicro of antibodie PMN and macrophages GCF positive flow |
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correlation of gcf to pmn in sulcus
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both increase similarly with plaque accumulation
|
|
what part of JE is altered in initial lesion
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most coronal
|
|
perivascular collagen loss
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Initial lesion
|
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cell to fiber ratio in healthy gingiva?
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low cell, high fiber
|
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early gingival lesion changes
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lymphocytes and PMNs increase
fibroblasts degenerate |
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basal cells proliferate
rete pegs invade coronal epithlium |
early leasion
|
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when is lesion clinically visible
|
early lesion
|
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what happens to capillary bed when JE invades CT
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opens up and proliferate into CT papille
|
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accumulation of lymphoid cells immediately below JE
|
early leasion
|
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which IL do activated t cells produce
|
2 3 4 5 6 10, 13 TNF alpha
|
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when do T B and plasma cells become evident
|
established lesion
|
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what to plasma cells produce
|
Igs and cytokines
|
|
Fibroblasts produce
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MMPs and TIMPs
|
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What has happened to apical JE in established lesion
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NOTHING
|
|
PE
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converted JE
not attached to tooth loaded with PMNs |
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switch from t cell to b cell dominance
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gingivitis to periodontitis
|
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first clinical sign of periodontitis
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destruction of CT root attachment and apical migration of JE
|
|
where does bone loss occur
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around communicating blood vessels along crest of septum
|
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plasma cells >50%
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advanced lesion
|
|
diabetes
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risk factor
|
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oral effects of diabetes
|
xerostema
candida periodontitis perio abcesses |
|
Type 2 diabetes bacteria
|
PI, CR, PG
|
|
spirocytes
|
increase in diabetes
increase in pregnancy |
|
Type I diabetes bacteria
|
cap
|
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when is the best time to treat perio during pregnancy
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2nd trimester
|
|
naphthoquiones
|
form steroid used by PI
associatied with pregnancy |
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direct estrogen response
|
increase vascular permiability
decrease keratinization decrease PME chemotaxis, and phagocytosis and Ab, T-cell responses |
|
lower GCF
decrease PMN function increase keratinization |
smokers
|
|
Papillon-Lefevre syndrome
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mutation in chromosome 11
|
|
aggressive perio is hereditable
|
TRUE
|
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increase perio succeptability in Caucasion
|
IL-1
|