DEN 112* CH 14*

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Author:
melinda
ID:
43626
Filename:
DEN 112* CH 14*
Updated:
2010-10-28 16:26:24
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Bitewing Radiographs
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Test on: FRIDAY Oct 29
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  1. What is a FILM LOOP?
    Cardboard loop used as a film holder in bitewing radiography.
  2. The disadvantage of using the largest size bitewing possible is?
    anatomical limitations may hinder ideal placement.
  3. Which film sizes would image all posterior teeth, from the distal portion of the canine to the third molar, with only two bitewing films being exposed?
    size 3
  4. Another name for a bitewing radiograph?
    interproximal radiograph
  5. What is POSITIVE ANGULATION???
    Angulation achieved by pointing the end of the PID downward from a horizontal plane.
  6. What two factors determine what size & how many films you should use for exposing a bitewing radiograph?
    1- Type of survey required

    2- The size & shape of the patient's oral cavity
  7. TRUE OR FALSE

    When positioning film packets for bitewing radiographs, it is important to image the distal and mesial halves of the teeth adjacent to those being radiographed.
    TRUE
  8. What is VERTICAL ANGULATION???
    The direction of the central beam in an up or down direction achieved by directing the tip of the PID upward or downward.
  9. If the patient fails to hold the tab in their mouth firmly what could happen?
    The film to drift lingually & distally, and increases the possibility that the tongues will move the film.

    This often results in a tilted or slanted occlusal plane on the radiographic image.
  10. The bitewing radiographs are significant because they reveal caries in the earliest stages particularly important in what teeth?
    Premolar & molar regions, where small carious lesions may be located.
  11. What are EXTERNAL AIMING DEVICES?
    An indicating component of some film holders that is used to aid in aligning the x-ray beam to the film.
  12. What is the HORIZONTAL BITEWING RADIOGRAPH?
    Bitewing radiograph placed in the oral cavity with the long dimension of the film packet positioned horizontally. ***Considered the traditional placement for most patients.
  13. For an adult horizontal premolar bitewing, align the film packet so that the anterior edge lines up........
    behind the distal half of the canine.
  14. Fill in the blank.

    The bitewing radiograph does not image the entire tooth and will not show __________ of teeth.
    APICES
  15. What are the film sizes that may be used for bitewing radiographs?
    0,1,2,3
  16. What is a BITEBLOCK??
    A plastic or polystyrene device that functions to hold the x-ray film in position while it is being exposed. The patient occludes and holds the film in place by biting on the biteblock.
  17. TRUE OR FALSE.

    For premolar bitewings, the radiographer should align the anterior edge of the film packet behind the canine that is positioned more posteriorly in the arches.
    FALSE
  18. What film size is especially made for taking horizontal bitewing radiographs??
    Size 3
  19. What is the RINN BITEWING INSTRUMENT?
    bitewing film holder w/ an external aiming device.
  20. What are EMBRASURES??
    The space between the sloping proximal surfaces of the teeth. The space may diverge facially, lingually, occlusally, or apically.
  21. For an adult horizontal or vertical molar bitewing, align the film packet so that the anterior edge lines up........
    behind the distal half of the second premolar.
  22. TRUE OR FALSE.

    When the horizontal angulation is directed obliquely from the mesial, overlapping will be more severe in the mesial or anterior region of the image.
    FALSE
  23. What size film is ESPECIALLY recommended for imaging the lateral-canine region??
    SIZE 1
  24. If bitewings are taken with a negative 10-degree angulation, the result will be?
    more mandibular teeth and alveolar bone imaged.
  25. FILL IN THE BLANK.

    The number and size of films to use for a bitewing examination depends on the __________ of the patient's oral cavity. (2 things)
    SHAPE & SIZE
  26. TRUE OR FALSE.

    For a bitewing survey on patients aged 14 to 17 years, one film placed on each side of the mouth usually provides adequate coverage of the region to be imaged.
    FALSE
  27. What are CONTACT POINTS?
    The area of a tooth surface that touches another tooth. This generally refers to the mesial surface of one tooth making contact with the distal surface of the tooth adjacent to it in the dental arch.
  28. Using a film holder with an external aiming device will most likely eliminate what error?
    Conecutting
  29. Unequal distribution of the arches is caused by incorrect..........
    vertical angulation.
  30. FILL IN THE BLANK.

    Directing the central rays of the x-ray beam toward the floor is __________ angulation.
    POSITIVE
  31. How many films are used for ANTERIOR bitewing examinations??
    Either 3 or 4
  32. TRUE OR FALSE.

    Paper film loop tabs can be attached to the film packet for both horizontal and vertical bitewings.
    FALSE
  33. To correct overlapping error, adjust the???
    horizontal angulation
  34. TRUE OR FALSE.

    When examining children, bitewing radiographs are usually positioned horizontally in the posterior region.
    TRUE
  35. How many films would be exposed for the posterior bitewing examination??
    Either TWO or FOUR


    PG 187
  36. What is a BITEWING RADIOGRAPH?
    An intraoral radiograph that shows the crowns of both the upper and lower teeth on the same film.
  37. Cone cuts result from incorrect?
    beam centering
  38. FILL IN THE BLANK.

    Directing the central rays of the x-ray beam toward the ceiling is __________ angulation.
    NEGATIVE
  39. TRUE OR FALSE

    The bitewing examination is especially useful in the detection of periodontal abscess.
    FALSE
  40. TRUE OR FALSE.

    When exposing a full mouth series, bitewing radiographs are often taken in conjunction with periapical films of the same area because bitewings show the height of the alveolar bone crest better than periapicals.
    TRUE
  41. FILL IN THE BLANK.

    __________ film is recommended for its ease of placement, and to avoid film bending when positioning a vertical bitewing in the lateral-canine region
    Size # 1
  42. What is a BITETAB?
    An extension, usually made out of heavy paper, that is attached at the center of the film packet and on which the patient bites to stabilize the film during a bitewing exposure.
  43. Through which interproximal space should the central rays be perpendicularly directed when exposing a premolar bitewing on an adolescent?
    Between the first & second molars
  44. What condition would not be visible on a bitewing radiograph?
    Apical abscess
  45. What is the approximate vertical angulation for bitewing radiographs?
    +10 degrees
  46. Why might vertical bitewing radiographs be recommended over horizontal bitewing radiographs?
    Adult with periodontal disease
  47. When taking a set of eight vertical bitewing radiographs, what should be exposed first?
    Right Canine Bitewing
  48. The film packet placement for an adult horizontal molar bitewing is to align the film packet so that the ..............
    Anterior portion of the film lines up behind the distal half of the second premolar.
  49. Through which interproximal space should the central rays be perpendicularly directed when exposing a molar bitewing on a child with primary teeth?
    Between the 1st & 2nd molars.
  50. This external film holding device may only be used horizontally.
    Film Loop
  51. Where do you attach bitetabs?
    The white unprinted side (front) of the film packet
  52. this film holder attachment is available for both horizontal & vertical bitewings.

    wider, difficult to tolerate.
    Biteblock
  53. The common number of film exposed for an adult bitewing examination is?

    Using what size?
    4

    2

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