Perio exam I ch 3

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darbydo88
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65134
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Perio exam I ch 3
Updated:
2011-02-08 21:49:23
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perio
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perio
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  1. Primary risk factor for perio disease
    gingivitis/biofilm
  2. well-organized
    cooperating
    community of
    microorganisms
    biofilm
  3. Protects the bacteria from external sources
    such as antibiotics/antimicrobials
    Extracellular matrix
  4. # of baceria in biofilm
    >500
  5. #pathogenic
    < 10% pathogenic
  6. # normal oral microbiota
    >90% normal oral microbiota
  7. When do u get aquired pellical?
    first few hrs
  8. 4 things in aquired pellical
    • protien
    • glycoprotien
    • saliva
    • crevicular fluid
  9. After aquired pellical?
    subsurface pellical
  10. What does bacteria adhere to?
    surface proteins
  11. Days of phase I, II, III
    • 1-2
    • 2-4
    • 4-7
  12. Prevotella intermedia causes?
    pregnancy gingivitis
  13. Bacteria that recognized carb structure are called?
    lectins
  14. Bacteria in the red group?
    • Pg
    • Tf (Bf)
    • Td (T. denticola)
  15. Aa is in which color?
    green
  16. Which color groups are the first colonizers?
    • purple
    • blue
    • yellow
  17. Types of subg bacterial biofilms
    • Tooth associated (attached)
    • Tissue associated
    • Unattached
  18. Nutrients for subg biofilm
    GCF contains Hemin-containing compounds that enhance the growth of porphymonas and prevotella sp.
  19. GCF has a good property
    Antimicrobial- prevents bacterimia and infections
  20. What holds biofilm together and protects the bacteria?
    extracellular matrix
  21. Direct Effect of Bacterial Action
    • Cytotoxic Agents (LPS/LOS, leucotoxins, lipoteichoic acid)
    • Enzymes (MMPs)
  22. Indirect Effect of Bacterial Action
    • Immunopatholgic Mechanisms (antigens stimulate immune response)
    • Combined mechanisms
  23. Gram-negative bacterial cell wall
    Released when bacteria die and lysis
    occurs
    Initiates inflammation and bone destruction
    Found loosely attached to root cementum
    LOS/LPS
  24. Components of dental plaque biofilm
    • Bacteria
    • Extracellular matrix
    • Cells: WBC, RBC, epithelial, ghost cells
  25. Extracellular matrix is what % of plaque
    25%
  26. 3 groups of factors
    • local factors (environment)
    • systemic factors (medical conditions)
    • host factors (one's own body)
  27. future health problems assc. with perio disease
    • diabetes mellitus
    • heart disease
  28. General term for something released by bacteria
    endotoxin
  29. example of endotoxin
    Aa

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