Deck 21: Occlusal and Localization Techniques

Question 1

In children, size ____ film is used in the occlusal examination.

A) 0
B) 1
C) 2
D) 4

Answer 1

2

Question 2

The buccal object rule depends on a ____ image shift when trying to locate vertically aligned images. With the buccal object rule, an object to the buccal of the reference object will move in the ____ direction as the shift.

A) Vertical; same
B) Vertical; opposite
C) Horizontal; same
D) Horizontal; opposite

Answer 2

Horizontal; opposite

Question 3

For the mandibular topographic occlusal projection, position the PID so that the central ray is directed at ____ degrees toward the center of the film.

A) +55
B) -55
C) +90
D) -90

Answer 3

-55

Question 4

A radiograph depicts which of the following dimensions of an object?
1) Length
2) Width
3) Depth

A)1, 2, 3
B)1, 2
C)1, 3
D)2, 3

Question 5

When using the occlusal technique, the film is positioned with the ____ side facing the arch that is being exposed, and the film is placed in the mouth ____.

A) White; to the lingual of the teeth
B) White; between the occlusal surfaces of the maxillary and mandibular teeth
C) Colored; to the lingual of the teeth
D) Colored; between the occlusal surfaces of the maxillary and mandibular teeth

Question 6

For the maxillary pediatric occlusal projection, position the PID so that the central ray is directed at ____ degrees toward the center of the film.

A) +20
B) +45
C) +60
D) +90

Question 7

When the right-angle technique is used, an occlusal film is exposed directing the central ray at ____ degrees to the film.

A) 20
B) 45
C) 65
D) 90

Question 8

The "S" in the mnemonic SLOB stands for:

A) Shift
B) Similar
C) Same
D) Some

Question 9

In adults, size ____ film is used in the occlusal examination.

A) 0
B) 1
C) 2
D) 4

Question 10

Which of the following is a maxillary occlusal projection, but not a mandibular occlusal projection?

A) Topographic occlusal projection
B) Lateral occlusal projection
C) Cross-sectional occlusal projection
D) Pediatric projection

Question 11

The dental radiograph is a ____-dimensional picture of a ____-dimensional object.

A) Two; two
B) Three; three
C) Two; three
D) Three; two

Question 12

When the occlusal technique is used, a ____ to stabilize the film.

A) Stabe bite-block is used
B) hemostat is used
C) patient gently bites on the surface of the film
D) bite-wing tab is used

Question 13

Which occlusal projection is used to examine the palate and the anterior teeth of the maxilla?

A) Topographic occlusal projection
B) Lateral occlusal projection
C) Cross-sectional occlusal projection
D) Pediatric projection

Question 14

The pediatric projection is recommended for use in children ____ years old or younger.

A) 2
B) 5
C) 8
D) 10

Question 15

For the maxillary topographic occlusal projection, the central ray is directed at ____ degrees.

A) +30
B) +45
C) +65
D) -30

Question 16

The occlusal technique is used to examine:

A) Interproximal areas.
B) Large areas of the upper or lower jaw.
C) Third molars.
D) For bone loss.

Question 17

According to the SLOB rule, when two radiographs are compared, the object that lies to the lingual appears to have moved in the same direction as the position-indicating device (PID), and the object that lies to the buccal appears to have moved in the opposite direction as the PID.

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 18

Which occlusal projection is used to locate foreign bodies or salivary stones in the region of the floor of the mouth?

A) Topographic occlusal projection
B) Lateral occlusal projection
C) Cross-sectional occlusal projection
D) Pediatric projection