Deck 10: Intraoral Technique: the Paralleling Method

Question 1

Preparing a patient for exposure of a radiographic series includes all of the following EXCEPT:

A)operators should use an exposure routine for the images to be taken
B)patients should be seated comfortably in the chair
C)eyeglasses may be left on during the exposure of radiographs
D)a lead apron and thyroid collar should be placed on the patient

Answer 1

eyeglasses may be left on during the exposure of radiographs

Question 2

Identify the most common error seen with the paralleling technique:

A)overlapping
B)collimator cut-off
C)film placement
D)elongation

Answer 2

film placement

Question 3

In the paralleling method, the zygomatic process of the maxilla is:

A)superimposed on the apex of the second maxillary molar
B)not seen
C)not superimposed on the apex of the maxillary molars
D)used as a point of entry

Answer 3

not superimposed on the apex of the maxillary molars

Question 4

When the PID is not positioned so that it almost touches the patient's face, a ________ film will result.

Question 5

Vertical bitewings:

A)do not use parallel film position
B)show more of the interseptal bone
C)are not diagnostic for caries
D)require greater exposure time

Question 6

Identify the total number of films used in a typical adult full-mouth radiographic survey:

A)8
B)10
C)18
D)26

Question 7

Reversing the film to the x-ray beam will cause ___________.

Question 8

Using the paralleling technique to evaluate periodontal bone height is essential because the paralleling technique prevents excessive ______________.

Question 9

Identify the correct teeth to be radiographed with this film position: "the center of the film aligns with the second premolar":

A)incisors
B)canines
C)premolars
D)molars

Question 10

In a full-mouth survey:

A)periapical films of edentulous areas are not taken
B)bitewing films of edentulous areas are taken
C)periapical films of edentulous areas are taken
D)opposing teeth for bitewings are not necessary

Question 11

Dark films can be caused by:

A)increased focal-film distance
B)increased object-film distance
C)overexposure
D)underdevelopment

Question 12

Identify an alternative radiographic exam for the edentulous periapical survey:

A)panoramic radiograph
B)topographic occlusal projections
C)vertical bitewings
D)a and b

Question 13

Identify the film placement most likely to excite the gag reflex:

A)maxillary central incisors
B)mandibular canine
C)maxillary molars
D)mandibular molars

Question 14

The film packet and the long axis of the tooth being radiographed must be parallel to each other, and the central ray of the x-ray beam must be directed perpendicular to both describes the basic principles of what intraoral technique?

A)paralleling technique
B)bisecting technique
C)occlusal technique
D)localization technique

Question 15

An overexposed film will appear similar to a (an)__________ film.

Question 16

The phrase "dot in the slot and the white toward me" ensures that:

A)the patient's head is properly positioned for intraoral radiography
B)the film and tooth are kept parallel to each other
C)the patient will not move during radiographic procedures
D)the orientation dot will not be superimposed over the apex of the root and the film will not be exposed backwards

Question 17

Identify the film necessary to diagnose pathologic conditions of the tooth root:

A)bitewing
B)periapical
C)occlusal
D)skull

Question 18

Vertical bitewings can be used in both anterior and posterior regions of the mouth. Exposure factors need to be increased (kVp, mA, time)when exposing vertical bitewings.

A)both statements are true
B)both statements are false
C)the first statement is true;the second statement is false
D)the first statement is false;the second statement is true

Question 19

Identify a desirable film placement to begin a full mouth radiographic survey:

A)maxillary central incisors
B)mandibular canine
C)maxillary molars
D)mandibular molars

Question 20

Identify the film that shows the teeth in occlusion with only the crowns visible:

A)bitewing
B)periapical
C)occlusal
D)cephalometric

Question 21

Cracks in the film emulsion brought about by excessive bending of a film will appear:

A)dark
B)light
C)clear
D)cracks in the emulsion have no effect on the processed image

Question 22

Improper horizontal beam alignment results in:

A)overlapping
B)collimator cut-off
C)film placement
D)elongation

Question 23

Bitewings are usually taken:

A)by the paralleling method
B)by the bisecting method
C)in protrusive relation
D)none of the above

Question 24

Identify the error seen when an operator lets his or her finger off the exposure button prematurely while exposing radiographs:

A)images that are totally black
B)images that are dark
C)images that are light
D)no images on the processed film