3 - Gingival Diseases Flashcards
what are the defense mechanisms of the gingiva
- JE
- GCF
- leukocytes
- saliva
what is a frontline barrier against microbial challenge
JE
how is JE a frontline barrier against microbial challenge
- cellular turnover (shedding)
- permeable
- cytokine production
what cytokines do JE produce
IL-1beta and IL-8
what is collected from sulcus in small amounts and analyzed
GCF
what may be used to help detect or diagnose active periodontal disease and may help predict patients at risk for perio disease
GCF
T/F: a critical challenge for clinicians is not the detection of perio disease but the indentification of patients with elevated risk of experiencing active and progressing disease
TRUE
MMP-8 was found where?
GCF and saliva
MMP-8 leads to what
- destruction of collagen in gingiva and alveolar bone
- associated with initiation and progression of periodontitis
- reflection of disease severity
what is used to collect and analyze GCF
periotron
what are the components of GCF
MMP-8, cells, electrolytes, and organic compounds
what cells found in GCF
bacteria, desquamated epithelial cells, leukocytes
what electrolytes found in GCF
potassium, sodium, and calcium
what organic compounds found in GCF
cytokines, prostaglandins E2, and immuniglobulins (IgG, IgA, IgM)
what are drugs secreted in GCF
- tetracycline - anti-collagenase effect
- metronidazole
what is the clinical implication of drugs secreted in GCF
adjunct to treat aggressive forms of periodontitis
what leukocytes are part of denfense mech of gingiva
PMN, B and T lymphocytes
what is a major protective mechanism against bacterial plaque
luekocytes in gingiva
how is saliva a defense mechanism of gingiva
- cleanses exposed oral surfaces
- buffering acids
- modulating bacterial activity with immune mediators
what are antibacterial factors in saliva
- lysozyme
- lactoperoxidase-thiocyanate system
- lactoferrin
- myeloperoxidase
what cleaves cell wall of Aggregatibacter actinomycetemcomitans
lysozyme
what is bactericidal to some Lactobacillus and
Streptococcus strains
lactoperoxidase-thiocynate system
what is effective against actinobacillus species
lactoferrin
what is released by leukocytes, bactericidal for actinobacillus
myeloperoxidase