Dental Assiting mod 150

  1. The spacific group(s) of bacteria responsible for dental caries is/are?
    (D) b and c

    Mutans Streptococci and Lactobacilli
  2. The presence of lactobacilli (LB) in a patient's mouth indicates that the paient.
    (B) Has a high sugar intake.
  3. The caries process requires a susceptible tooth, a diet rich in _____, and _____.
    (A) Fermentable carbohydrates; Spacific bacteria
  4. Dissolution of calcium andphosphate from hydroxyapatite crystals is called_____
    (B) Demineralization
  5. The carious lesions found frequently in elderly patients are?
    (C) Root caries
  6. The ____ protection of saliva is dependent on substances within the saliva, such as immunoglobulin.
    (C) Antibacterial
  7. A laser caries detector_____.
    (C) Cannot be used to diagnose interproximal caries.
  8. The caries process can be slow or prevented by?
    (C) Using Fluoride
  9. Carier risk accessment test include measuring the____.
    (B) Saliva flow test and bacterial testing
  10. Rampan caries can be caused by_____
    (D) A and C

    Xerostomia and eating frequent and /or excessive amount sugar
  11. It is anticipated that future advances in _____ will provide dental professionals with a rapid method of assessing a patient's risk for dental caries before the patient leaves the dental chair.
    (C) Molecular Biology
  12. Nearly _____% of all cavities occur in the pits and fissures of the posterior teeth.
    (D) 84
  13. Sealants are indicated for____
    (D) Some maxillary central and latoral incisors.
  14. Contraindications to sealant placement include proximal decay, because____
    (B) Posterior proximal tooth preparation will usually include the occlusal pits and fissures.
  15. Light-cured sealant materials____
    (D) Are polymerized by photo iniciators in the resin.
  16. The most common cause of sealant loss is _____
    (C) Moisture contamination during placement
  17. The first step in placing dontal sealants is to_____ the surface.
    (C) Clean
  18. A sealant that polymerized by chemical reactions is called ___?
    (C) Self-cured
  19. Self-cured sealant materials are supplied as a two-part system that includes ____
    (D) both A and b

    A base and A catalyst
  20. The retention of the sealant is obtained by etching the enamel with ___, to roughen it and open the pores in enamel for penetration of the resin sealant.
    (B) Phosphoric Acid
  21. Enamel that has been etched has the appearance of being ___.
    (B) Frosty
  22. Sealant material should not be stored in proximity to ___ containing products.
    (B) Eugenol
  23. The primary reason why very few children are protected by dental sealants is _____.
    (C) Lack of public awareness
  24. Clinical researchers have shown that sealing the margins of amalgam and composite restorations with unfilled resins will do which of the following: 1)promote microleakage, 2) arrest the progression of caries, 3) preserve exixting restoration, and 4) preserve tooth structure.
    (B) 2,3,4
  25. If you use an air polishing device that used sodium bicarbonated for cleaning enemal prior to sealant placement, the etching step should be repeated for a second time, or ________ should be applied to the surface for 10 seconds to neutralize the sodium bicarbonate and throughly rinsed off with water prior to apply the etch.
    (C) 3% hydrogen peroxide
Card Set
Dental Assiting mod 150
Pit and Fissure Sealant State exam