slide exam I

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  1. Mixed radiographic lesions (both radiopague and radiolucent) represent what?
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    A transition stage in lesion development. (usually becomes more radiopague with time)
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    periapical cemento-osseous dysplasia
  3. location of following lesions:
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    (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:
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  8. single comparemented lesions are called?
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  9. multicompartmented lesions are called?
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  10. multilocular "soap bubble" appearance
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    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
    • expansile
    • -usually benign
    • -slow growing lesion
    • -cortex able to lay down cortical bone faster than it resorbs
  14. when lesions perforates the cortical plate..
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    • 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
    Focal Opacity
  16. multiple opacities, appear to overlap
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    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
    Ground Glass
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    Cotton-wool appearance
  21. opaque lesion located in soft tissue, not bone, ex: salivary duct stone
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    Soft Tissue Opacity
  22. disappears when stretched
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    • 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
    • Retrocuspid papilla
    • -located on gingival margin, lingual of mandibular canines.
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    • Benign Migratory Glossitis
    • Geographic Tongue
    • Erythema Migrans
    • -devoid of filiform papillae
    • -caused by dekeratinization and desquamation of filiform papillae
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    • Ectopic Geographic Tongue
    • -may be found on areas other than tongue
    • -often buccal & labial mucosa
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    • 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.
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    • 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?
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    film bending
  31. what's the error here?
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    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?
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    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?
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    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?.
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    overlapped film during processing
  46. processing error seen here?
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    Torn Emulsion
  47. error seen here?
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    Reticulation - cracked emulsion, due to temperature change.
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    air bubbles, are more circular than a fixer splash.
  49. degree of bone loss chart.
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    • mild: 20-30%
    • moderate: 30-50%
    • severe: >50%
  50. a three-walled defect has how many walls remaining?
    three-walls remaining, only one missing.
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  52. occlusal caries are automatically considered...
    moderate caries.
  53. what kind of caries is this?
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    root caries
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    abrasion. very clear path
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    cervical burnout, on the fuzzy side.
  56. error here
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    turned and too far foreward.

    too far foreward = small anterior teeth
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    too far back. teeth are fat.
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    • 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
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    Nasal Fossa
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    incisive foramen
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    median palatal suture
  62. the lateral fossa is found..?
    anterior to canine
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    • a. floor of nasal fossa
    • b. maxillary sinus
    • c. lateral fossa
    • d. nose

    a + b = inverted "Y"
Card Set:
slide exam I
2010-06-04 19:08:35
radiographs lesion variants

radiographic lesions, variants of normal, exposure errors, processing errors
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