Question 1

Identify the major disadvantage of the bisecting technique:
A)images produced are often distorted
B)it is difficult for the patient
C)the long cone required is bulky and hard to manage
D)film holding devices may be confusing

Accepted Answer

The major disadvantage of the bisecting technique is that the images produced are often distorted.

Question 2

Identify a possible patient scenario in which the bisecting angle technique would be used:
A)an adult with a small mouth
B)a child
C)a person with a low palatal vault
D)all of the above

Accepted Answer

The bisecting angle technique is commonly used when the patient has a small mouth, a child, or a low palatal vault, or any situation where the parallel technique cannot be used effectively. Therefore, all of the above scenarios could warrant the use of the bisecting angle technique.

Question 3

Occlusal films can be processed in the darkroom, with similar technique to standard intraoral films. The exposure times of occlusal films is usually greater than intraoral periapical films.
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

Accepted Answer

Occlusal films can indeed be processed in the darkroom using similar techniques as intraoral films, and they generally require greater exposure times compared to intraoral periapical films due to their larger size and the need to penetrate more tissue.

Question 4

In the bisecting technique the tooth-film distance is:
A)maximal
B)minimal
C)not important
D)none of the above

Accepted Answer

In the bisecting technique, the aim is to have a minimal tooth-film distance to achieve accurate radiographs. This technique requires angulation of the film to allow direct visualization of the apex of the tooth, which minimizes the distortion of the image. Therefore, having a minimal tooth-film distance is crucial in the bisecting technique.

Question 5

____________________ exposure times can be used for the bisecting technique because of the shorter FFD.

Accepted Answer

The answer of ____________________ exposure times can be used for...

Question 6

A +75 degree vertical angulation for a maxillary cuspid will produce a (an)________ image.

Accepted Answer

The answer of A +75 degree vertical angulation for a...

Question 7

The topographic occlusal projection can be used for:
A)localizing impactions
B)evaluating periodontal bone height
C)visualizing large areas of pathology
D)detecting caries

Accepted Answer

The topographic occlusal projection is best suited for visualizing large areas of pathology, such as cysts or tumors, and is less effective for detecting caries, localizing impactions, or evaluating periodontal bone height.

Question 8

If the vertical angulation of the PID is insufficient, _______ will result.

Accepted Answer

The answer of If the vertical angulation of the PID...

Question 9

Identify the number that correlates to the size of an occlusal film packet:
A)size 0
B)size 1
C)size 2
D)size 4

Accepted Answer

Size 4 is the correct answer because it is specifically designated for occlusal film packets, which are used to capture large areas of the mouth.

Question 10

The imaginary angle that is bisected with the use of the Bisecting Angle Technique is formed between the long axis of the tooth and:
A)the long axis of the PID
B)the horizontal axis of the film
C)the long axis of the film
D)the horizontal axis of the tube head

Accepted Answer

The bisecting angle technique is used when a paralleling technique cannot be performed due to anatomical limitations. It involves bisecting the angle formed by the long axis of the tooth and the long axis of the film. Therefore, choice C, the long axis of the film, is the correct answer.

Question 11

The finger holding method should _____ be used with the bisecting technique.

Accepted Answer

The finger holding method is not recommended with the bisecting technique as it may cause distortion of the image. Instead, other methods like the film holding instrument or the XCP instrument should be used for proper positioning of the film.

Question 12

A -5 degree vertical angulation for the lower incisors will produce a (an)________ image.

Accepted Answer

The answer of A -5 degree vertical angulation for the...

Question 13

When compared with periapical films, topographic occlusal films have a __________.

Accepted Answer

The answer of When compared with periapical films, topographic occlusal...

Question 14

Compared with standard intraoral films, the occlusal film size is approximately:
A)the same
B)twice as large
C)4 times as large
D)8 times as large

Accepted Answer

Occlusal film size is approximately 4 times as large as standard intraoral films. This allows for a larger surface area to be captured, making it ideal for imaging larger areas of the mouth such as the palate and floor of the mouth.

Quiz 11: Accessory Radiographic Techniques: Bisecting Technique and Occlusal Projections

Identify the major disadvantage of the bisecting technique:

Identify a possible patient scenario in which the bisecting angle technique would be used:

Occlusal films can be processed in the darkroom, with similar technique to standard intraoral films. The exposure times of occlusal films is usually greater than intraoral periapical films.

In the bisecting technique the tooth-film distance is:

____________________ exposure times can be used for the bisecting technique because of the shorter FFD.

A +75 degree vertical angulation for a maxillary cuspid will produce a (an)________ image.

The topographic occlusal projection can be used for:

If the vertical angulation of the PID is insufficient, _______ will result.

Identify the number that correlates to the size of an occlusal film packet:

The imaginary angle that is bisected with the use of the Bisecting Angle Technique is formed between the long axis of the tooth and:

The finger holding method should _____ be used with the bisecting technique.

A -5 degree vertical angulation for the lower incisors will produce a (an)________ image.

When compared with periapical films, topographic occlusal films have a __________.

Compared with standard intraoral films, the occlusal film size is approximately: