Theory II

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Theory II
2011-02-08 19:51:39
chapter eighteen

week four
Show Answers:

  1. true or false. More than one mode of attachment can occur on any one tooth in any one area
  2. What are the three general modes of calculus attachment?
    • acquired pellicle
    • minute irregularities in tooth surface by mechanical locking into undercuts
    • direct contact between calcified intercellular matrix and the tooth surface
  3. What is a thin, acellular, homogenous layer positioned between the calculus and the tooth surface?
    the pellicle
  4. Calculus attachment to what is superficial because no interlocking or penetration occurs?
  5. What type of attachment occurs most frequently on enamel and newly scaled and planed root surfaces?
  6. calculus may be removed readily because of the smooth attachment of what?
  7. cracks, lamellae, and carious defects can all cause what type of calculus attachment?
    attachment to minute irregularities in the tooth surface by mechanical locking into undercuts
  8. tiny spaces left at previous locations of sharpey's fibers, resorption lacunae, scaling frooves, and cemental tears are what type of calc attachment?
    cemental irregularities
  9. In what attachment is is difficult to tell that all the calculus has been removed?
    minute irregularites by mechanical locking into undercuts
  10. What type of calculus attachment includes interlocking of inorganic crystals of the tooth with the mineralizing dental biobilm, and distinction between calc and cementum is difficult during root debridement?
    attachment by direct contact between calcified intercellular matrix and the tooth surface
  11. Calculus has long been considered to have an important role in the development, promotion, and recurrence of what type of infections?
    • gingival
    • periodontal
  12. Calculus is mineralized biofilm. The biofilm bacteria _____________ is mineralized first
    next to the tooth surface
  13. What are 2 ways that supragingival biofilm is examined?
    • direct examination
    • compressed air
  14. What are 2 ways that supragingival calculus is examined using direct examination?
    directly or indirectly with a mouth mirror
  15. What are 5 ways that subgingival calculus is examined?
    • visual
    • gingival tissue color change
    • tactile examination
    • radiographic examination
    • perioscopy
  16. Using transillumination, a dark, opaque, shadowlike area seen on a proximal tooth surface may be what? And when is the enamel transluscent?
    • calculus
    • without calculus, stain, or thick soft deposit
  17. What might darkness reflected through a thin margin suggest?
    the presence of subgingival calculus
  18. Using the probe or explorer to feel calculus is using what type of calc exam?
  19. true or false. Radiographic examination is useful for calculus detection.
    FALSE! It is not useful because of highly mineralized tooth structure superimposed over calc deposits
  20. What is a good way to detect burnished calc?
  21. Calculus control dentrifrices currently available aim to inhibit what?
    calculus crystal growth
  22. true or false. Calc control dentrifrices do not have an effect on existing calculus deposits and are offered as a preventive measure against the formation of new supragingival calc
  23. agents including pyrophosphates, zinc citrate or zinc chloride, and triclosan would be used in what?
    'tarter control' mouth rinses or dentrifrices