slide exam I

  1. Mixed radiographic lesions (both radiopague and radiolucent) represent what?
    Image Upload 2
    A transition stage in lesion development. (usually becomes more radiopague with time)
  2. Image Upload 4
    periapical cemento-osseous dysplasia
  3. location of following lesions:
    Image Upload 6

    (between the roots)
  4. <.05p =
    1 out of every 20
  5. location of lesion:
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    • pericoronal
    • -wrapped around the crown of impacted tooth
  6. location of lesion:
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    • periapical
    • -around the apex (roots) of tooth
    • -often indicates necrosis of tooth.
  7. location of lesion:
    Image Upload 12
  8. single comparemented lesions are called?
    Image Upload 14
  9. multicompartmented lesions are called?
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  10. multilocular "soap bubble" appearance
    Image Upload 18
    tends to be bengin but v. agressive growth.
  11. this lesions borders are?
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    • corticated
    • -well defined.
  12. this lesion's diffuse border is called a?
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    non-corticated border
  13. this lesion is called?Image Upload 24
    • expansile
    • -usually benign
    • -slow growing lesion
    • -cortex able to lay down cortical bone faster than it resorbs
  14. when lesions perforates the cortical plate..
    Image Upload 26
    • Cortical Erosion
    • -may indicate malignancy
    • -tumor grows so fast the cortex cannot lay bone down fast enough
  15. singular, well-defined localized lesions are called:Image Upload 28
    Focal Opacity
  16. multiple opacities, appear to overlap
    Image Upload 30
    Multifocal Confluent Opacity
  17. a lesion which is uniform in density (whiteness) throughout is called
  18. ill-defined (diffuse) pattern or density, may represent malignancy. these lesions are called?
    irregular opacity
  19. Granular, frosted-glass-like, no trabeculae. Resembles an "orange peel"Image Upload 32
    Ground Glass
  20. Image Upload 34
    Cotton-wool appearance
  21. opaque lesion located in soft tissue, not bone, ex: salivary duct stone
    Image Upload 36
    Soft Tissue Opacity
  22. disappears when stretched
    Image Upload 38Image Upload 40
    • Leukoedema
    • -developmental
    • -increase edema in spinous cells, produces parakeratosis in epithelium
    • -diffuse, transparent or opalescent (milk-grey/white)
    • -occurs on buccal mucosa (bilateral)
    • -asymptomatic; cannot be wiped off with gauze
    • -stretching mucosa diminishes white appearance. this is diagnostic
    • no TX
  23. fibrous, not bonyImage Upload 42
    • Retrocuspid papilla
    • -located on gingival margin, lingual of mandibular canines.
  24. Image Upload 44Image Upload 46
    • Benign Migratory Glossitis
    • Geographic Tongue
    • Erythema Migrans
    • -devoid of filiform papillae
    • -caused by dekeratinization and desquamation of filiform papillae
  25. Image Upload 48Image Upload 50
    • Ectopic Geographic Tongue
    • -may be found on areas other than tongue
    • -often buccal & labial mucosa
  26. Image Upload 52Image Upload 54Image Upload 56
    • Median Rhomboid Glossitis
    • - chronic fungal infection of Candida ablicans
    • -red, flat or raised oval lesion.
    • -located: midline of dorsum of tongue, anterior to the circumvallate papillae
    • -filiform papillae missing
    • -tx: usually none. or antifungal, but only if symptomatic.
  27. Image Upload 58
    • Hairy Tongue
    • -cause: unknown, lack of normal desquamation of filiform papillae
    • - commonly associated with heavy smokers and poor oral hygiene.
    • -possible predisposing factors: long-term antibiotic therapy, long-term corticosteroid therapy, head and neck radiation therapy, chemical mouthrinses (hydrogen peroxide on daily basis), overgrowth of Candida albicans infection.
  28. Why is black hairy tongue, black?
    • due to the presence of Chromogenic Bacteria.
    • Do not brush with toothpaste, just water.
  29. what's the error here?
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    Reversed film
  30. what's the radiographic error here?
    Image Upload 62Image Upload 64
    film bending
  31. what's the error here?
    Image Upload 66
    pt movement.
  32. Elongation =
  33. More angulation of the film equates to?
    the more angulation takes place, the shorter the teeth will appear
  34. exposure error here is?
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    thyroid collar too high up
  35. exposure error here?
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    Finger in path of x-ray beam. (Phalangioma)
  36. exposure error here?
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    light leak, lightening of film
  37. processing error: Light Film, may be due to...?
    • Solutions too cool
    • Short development time
    • Under-replenishment
    • Contaminated developer
  38. processing error: Dark film, may be due to...?
    • Solution too warm
    • Too much time in developer
    • Light leaks; incorrect filteres
  39. Which solution is cut-off?
    Image Upload 74
    developer cutoff.

    (developer causes things to become darker.)
  40. Which solution is cut off?
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    Fixer Cutoff

    (Fixer neutralizes developer, developer doesn't get neutralized due to low fixer solution, equates to too much development, ergo..dark block)
  41. what's the processing error seen here?
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    light leak.
  42. what is the processing error seen here?
    Image Upload 80
    dark spots - developer contamination
  43. what is the processing error seen here?
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    white spots- fixer contamintaion or air bubbles.
  44. processing error seen here?
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    yellow/brown stain = inadquate wash, depleted fixer
  45. proc error seen here?.
    Image Upload 86
    overlapped film during processing
  46. processing error seen here?
    Image Upload 88
    Torn Emulsion
  47. error seen here?
    43.jpgImage Upload 90
    Reticulation - cracked emulsion, due to temperature change.
  48. Image Upload 92
    air bubbles, are more circular than a fixer splash.
  49. degree of bone loss chart.
    Image Upload 94
    • mild: 20-30%
    • moderate: 30-50%
    • severe: >50%
  50. a three-walled defect has how many walls remaining?
    three-walls remaining, only one missing.
  51. Image Upload 96
  52. occlusal caries are automatically considered...
    moderate caries.
  53. what kind of caries is this?
    1Image Upload 98
    root caries
  54. Image Upload 100
    abrasion. very clear path
  55. Image Upload 102Image Upload 104
    cervical burnout, on the fuzzy side.
  56. error here
    Image Upload 106
    turned and too far foreward.

    too far foreward = small anterior teeth
  57. Image Upload 108
    too far back. teeth are fat.
  58. Image Upload 110
    • a. nasal septum
    • b. inferior concha
    • c. nasal fossa
    • d. anterior nasal spine
    • e. incisive foramen
    • f. median palatal suture
    • g. soft tissue of nose
  59. Image Upload 112
    Nasal Fossa
  60. Image Upload 114
    incisive foramen
  61. Image Upload 116
    median palatal suture
  62. the lateral fossa is found..?
    anterior to canine
  63. Image Upload 118Image Upload 120
    • a. floor of nasal fossa
    • b. maxillary sinus
    • c. lateral fossa
    • d. nose

    a + b = inverted "Y"
Card Set
slide exam I
radiographic lesions, variants of normal, exposure errors, processing errors