Perio ch. 5

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darbydo88
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70796
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Perio ch. 5
Updated:
2011-03-04 22:29:36
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perio
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  1. Contributory
    • • Do not by themselves initiate inflammation
    • • Facilitates long-standing plaque
    • accumulation
    • • Contributes to difficulty in plaque removal
  2. Most important local contributing factor
    Calculus
  3. latin for pebble or stone
    calculus
  4. Presence accelerates the progression of
    periodontal disease (5)
    • Local contributing factor (adjacent to salivary sources)
    • Veneer and ledge formations
    • Calcium carbonate & inactive microorganisms
    • Subgingival—more Ca, Mg, Fl
  5. calculus is formed from what in plaque
    Calcium and phosphate salts
  6. does calculus contribute to the development of caries or disease?
    No
  7. Has Channels with debris and bacteria
    • Shelter for bacteria
    Calculus
  8. Supragingival Calculus defined:
    good for:
    Most prevalent where:
    Made of:
    Stratified?
    Predominant crystal:
    • Good visual for documentation
    • Most prevalent at opening of Wharton’s and Stenson’s ducts
    • Organic matrix of plaque micro organisms, glucans, glycoproteins and lipids
    • Stratified
    • Predominant crystal=hydroxyapatite
  9. Color of Subg calc
    • black
    • dk green
    • due to blood pigments
  10. how does sub calc grow?
    cementume + pellical
  11. 3 major characteristics of calc
    • Porous,
    • rough
    • Retention device
  12. As mineralization continues, what 3 crystals form
    • hydroxyapatie
    • brushite
    • whitlockite
  13. % mineralization for supr Calc?
    % mineralization for sub calc?
    • 30%
    • 60%
  14. % mineralization for supr Calc?
    % mineralization for sub calc?
    • 30%
    • 60%
  15. Do not reduce present calculus
    Do not affect subgingival calc. formation
    Do not reduce quantity of calculus present
    Do not replace instrumentation
    Thorough brushing needed
    • Hydroxyapatite Inhibitors
    • • Pyrophosphates
  16. Plaque retentive factors
    • Dental restorations:
    • Defective margins
    • Overhangs
  17. Dental anomalies aiding in plaque accumulation
    • Cervical enamel projections (CEPs)
    • Enamel Pearls
    • Palatogingival grooves
    • Furcations
    • Internal root concavities
  18. Traumatic Factors
    • • Toothbrush Trauma
    • • Factitious Disease
    • • Food Impaction
    • • Chemical Injury
    • • Occlusal Trauma
  19. do oral piercing contribute to plaque formation?
    yes
  20. Tobacco is a risk factor for
    PD and Calc
  21. PMNs are increases in
    Smokers..increases phagocytosis
  22. how many drinks per week will increase risk for PD
    3.5

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