ch. 32 radiology

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ch. 32 radiology
2010-11-09 22:35:33
interpretation dental caries

ch 32 radiology
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  1. tooth decay, ________ is the localized destruction of teeth by microorganisms.
  2. what does carious mean?
  3. a cavity refers to a _________ or _______
    cavitation or hole
  4. T/F to detect caries, both clinical and radiographic examination is necessary
  5. can a dental exam be complete without radiographs?
  6. what does using a radiograph allow the professional to evaluate about the carious lesions?
    the extent and severity
  7. smooth surfaces that may exhibit a chalky white or opacity indicates ____________
  8. what other type of radiograph besides BWX are able to be used for evaluating caries?
    PA's using the paralleling technique
  9. can the use of a pocket-sized magnifying glass be helpful in evaluating the radiographic appearance of caries?
  10. on a dental radiograph, interproximal caries are typically seen at or just below (apical to):
    the contact point
  11. what shape or configuration does the caries make as it progresses inward through the enamel of the tooth?
    a triangular configuration
  12. when caries reaches the DEJ, which direction does it spread to continue to the dentin?
  13. what are the four interproximal carious lesions classified as?
    • incipeint
    • moderate
    • advanced
    • severe
  14. caries that extends less than halfway through the thickness of the enamel:
    incipient caries (beginning to exist or appear)
  15. which class is incipient caries and which structure(s) does it go through?
    • class I
    • enamel only
  16. caries that extends more than halfway through the thickness of the enamel but does not involve the DEJ
    moderate interproximal caries
  17. moderate interproximal caries are which class and where are they seen?
    • class II
    • in enamel only
  18. caries that extends to or through the DEJ and into the dentin but does not extend through the dentin more than half the distance toward the pulp:
    advanced interproximal caries
  19. which class is advanced interproximal caries and which layer(s) are involved?
    • class III
    • both enamel and dentin
  20. caries that extends through the enamel, dentin, and more than half the distance toward the pulp:
    sever interproximal caries
  21. what class are severe interproximal caries and which layer(s) are involved?
    • class IV
    • both enamel and dentin, may appear clinicallly as a cavitation in the tooth
  22. why is it difficult to see occlusal caries on a radiograph?
    because of the superimposition of the dense buccal and lingual enamel cusps
  23. when are occlusal caries actually seen on a radiograph?
    when there is involvement of the DEJ
  24. what are the three classifications of occlusal caries?
    • incipient
    • moderate
    • severe
  25. which caries cannot be seen on a dental radiograph and must be detected clinically with an explorer?
    incipient occlusal caries
  26. which caries extends into the dentin and appears as a very thin radiolucent line under the enamel of the occlusal surface of the tooth
    moderate occlusal caries
  27. which caries extends into dentin and appears as a large radiolucency extending under the enamel? it also appears as a cavitation in the tooth
    severe occlusal caries
  28. why are buccal and lingual caries hard to detect on a radiograph?
    because of the superimposition of the densities of normal tooth structure
  29. which teeth are the most common to have buccal or lingual caries?
    mandibular and maxillary first molars
  30. root surface caries involves only the ______ of the teeth. the ________ and ________ located just below the cervical region of the tooth are involved
    • root
    • cementum
    • dentin
  31. is there involvement of enamel in root caries?
  32. bone loss and corresponding gingival recession preceed the caries process from:
    exposed root surfaces
  33. when buccal or lingual caries is able to be seen on a radiograph, what does it look like?
    a small circular radiolucent area
  34. what are the two most common locations of exposed roots?
    • mandibular premolars
    • mandibular molar areas
  35. what appears as a cupped-out or crater-shaped radiolucency just below the CEJ?
    root surface caries
  36. recurrent caries is also known as
    secondary caries
  37. what caries occurs adjacent to a preexisting restoration?
    recurrent caries
  38. where do recurrent caries most often occur?
    beneath interproximal margins of a restoration
  39. what are the three causes for recurrent caries?
    • inadequate cavity preparation
    • defective margins
    • incomplete removal of caries before placed restoration
  40. what does rampant mean?
    growing or spreading unchecked
  41. rampant caries is ________ and __________ and affects numerous teeth
    advanced and severe
  42. where is rampant caries most commonly seen?
    in children with poor dietary habits or in adults with decreased salivary flow.