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

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

Answer 1

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

Answer 2

all of the above

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

Answer 3

both statements are true

Question 4

In the bisecting technique the tooth-film distance is:

A)maximal
B)minimal
C)not important
D)none of the above

Question 5

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

Question 6

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

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

Question 8

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

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

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

Question 11

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

Question 12

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

Question 13

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

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