Deck 9: Intraoral Radiographic Technique: the Paralleling Method

Question 1

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

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

Answer 1

not superimposed on the apex of the maxillary molars.

Question 2

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

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

Answer 2

images that are light.

Question 3

Preparing a patient for exposure of a radiographic series includes all of the following EXCEPT one.Which one is the EXCEPTION?

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

Answer 3

Eyeglasses may be left on during the exposure of radiographs.

Question 4

In a full-mouth survey of radiographs:

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

Question 5

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)Occlusal technique
B)Bisecting technique
C)Paralleling technique
D)Localization technique

Question 6

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

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

Question 7

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

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

Question 8

An overexposed film will appear similar to an overdeveloped film.

Question 9

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

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

Question 10

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

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

Question 11

Identify an alternative radiographic exam for the edentulous periapical survey:

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

Question 12

Identify the most common error seen with the paralleling technique:

A)elongation.
B)overlapping.
C)film placement.
D)collimator cutoff.

Question 13

Bitewings are usually taken:

A)in protrusive relation.
B)by the bisecting method.
C)by the paralleling method.
D)None are correct.

Question 14

Vertical bitewings can be used in both anterior and posterior regions of the mouth.Exposure factors need to be increased (kV,mA,and 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 15

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

Question 16

Vertical bitewings:

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

Question 17

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

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

Question 18

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

Question 19

Reversing the film to the x-ray beam will cause a light film/geometric pattern.

Question 20

Improper horizontal beam alignment results in:

A)elongation.
B)overlapping.
C)film placement.
D)collimator cutoff.