Deck 18: Bisecting Technique

Question 1

The rule of isometry states that two triangles are equal if they have ____ equal angles and share a common side.

A) One
B) Two
C) Three
D) Four

Answer 1

Two

Question 2

When Rinn BAI instruments are used, "BAI" refers to which of the following?

A) Bisecting, aiming, instrument
B) Bisecting, angle, instrument
C) Bisecting, angle, integration
D) Both, angle, integration

Answer 2

Bisecting, angle, instrument

Question 3

When the bisecting technique is used, the central ray is directed at 90 degrees to the:

A) Film.
B) Long axis of the tooth in the same arch.
C) Long axis of the tooth in the opposing arch.
D) Imaginary bisector.

Answer 3

Imaginary bisector.

Question 4

When the ____ is/are used, the patient may use excessive force to stabilize the film, causing the film to bend and resulting in image distortion.

A) Rinn BAI instruments
B) Stabe bite-block
C) Finger-holding method
D) EEZEE-Grip film holder

Question 5

Elongated images refer to images of the teeth that appear ____. Elongation of images results from ____ vertical angulation.

A) Too long; excessive
B) Too long; insufficient
C) Shortened; excessive
D) Shortened; insufficient

Question 6

Foreshortened images refer to images of the teeth that appear ____. Foreshortening of images results from ____ vertical angulation.

A) Shortened; insufficient
B) Shortened; excessive
C) Too long; insufficient
D) Too long; excessive

Question 7

Which of the following commercially available film holders can be used with the bisecting technique?

A) Rinn BAI instruments
B) Rinn XCP instruments
C) Stabe bite-block
D) Both a and c

Question 8

Which of the following commercially available film holders are recommended for use with either the paralleling or the bisecting technique?
1) Rinn XCP instruments
2) Rinn BAI instruments
3) Precision film holder
4) Stabe bite-block
5) EEZEE-Grip film holder

A)1, 2, 3, 4, 5
B)2, 3, 4, 5
C)3, 4, 5
D)2, 4, 5

Question 9

When the bisecting technique is used, the film must be placed along the ____ surface of the tooth.

A) Buccal
B) Lingual
C) Mesial
D) Distal

Question 10

Which size film is traditionally used with the bisecting technique?

A) #1 film for anterior teeth, #1 film for posterior teeth
B) #1 film for anterior teeth, #2 film for posterior teeth
C) #2 film for anterior teeth, #1 film for posterior teeth
D) #2 film for anterior teeth and for posterior teeth

Question 11

The primary benefit of using film holders with the bisecting technique is:

A) Assisting in determining vertical angulation.
B) Helping to minimize cone cuts.
C) Reducing the patient's exposure to radiation.
D) Allowing the operator to have the film parallel to the long axis of the tooth.

Question 12

With the ____ technique, the vertical angulation is determined by the imaginary bisector; the central ray is directed perpendicular to the imaginary bisector.

A) Paralleling
B) Bisecting
C) Bite-wing
D) Occlusal

Question 13

Which of the following techniques use the same principles of horizontal angulation?
1) Paralleling
2) Bisecting
3) Bite-wing

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

Question 14

According to the authors, in the bisecting technique, film-holding instruments or the patient's finger may be used to position and stabilize the film. With the bisecting technique, using film holders is recommended because it eliminates use of the patient's finger to stabilize the film.

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

With the bite-wing technique, the vertical angulation is predetermined; the central ray is directed at ____ degrees to the occlusal plane.

A) +10
B) -10
C) +20
D) -20

Question 16

When the bisecting technique is used, which of the following angles is bisected?

A) The angle formed by the film and the long axis of the tooth
B) The angle formed by the central ray and the tooth
C) The angle formed by the central ray and the film
D) The angle that is perpendicular to the film

Question 17

With the finger-holding method, which of the following would be used to hold the maxillary right molar film?

A) Left thumb
B) Right thumb
C) Left finger
D) Right finger

Question 18

When the bisecting technique is used, foreshortening will occur if the central ray is directed perpendicular to the:

A) Plane of the film.
B) Imaginary bisector.
C) Long axis of the tooth on the same arch.
D) Long axis of the tooth on the opposite arch.

Question 19

Film should be placed approximately ____ inch beyond the incisal or occlusal surfaces when using the bisecting technique.

A) 1/16
B) 1/8
C) 1/4
D) 1/2

Question 20

Which of the following commercially available film holders is/are recommended for one-time use only?

A) Rinn XCP instruments
B) Rinn BAI instruments
C) Stabe bite-block
D) EEZEE-Grip film holder

Question 21

With the bisecting technique, the recommended vertical angulation range for maxillary canines is ____ degrees.

A) +20 to +30
B) +30 to +40
C) +40 to +50
D) +45 to +55

Question 22

According to the text, when exposing a complete mouth radiographic series (CMRS) using the bisecting technique, there are ____ recommended size 2 periapical film placements.

A) 7
B) 12
C) 14
D) 19

Question 23

According to the recommended posterior periapical exposure sequence for the bisecting technique, the second posterior quadrant exposed should be the:

A) Maxillary right quadrant.
B) Maxillary left quadrant.
C) Mandibular right quadrant.
D) Mandibular left quadrant.

Question 24

For the maxillary premolar exposure, the front edge of the film should be aligned with the midline of the maxillary:

A) Lateral incisor.
B) Canine.
C) First bicuspid.
D) Second bicuspid.

Question 25

The recommended posterior periapical exposure sequence for the bisecting technique is to begin with the:

A) Maxillary right quadrant.
B) Maxillary left quadrant.
C) Mandibular right quadrant.
D) Mandibular left quadrant.

Question 26

With the bisecting technique, the recommended vertical angulation range for mandibular molars is ____ degrees.

A) -5 to 0
B) + 20 to +30
C) -20 to -30
D) -10 to -15

Question 27

According to the text, the disadvantages of the bisecting technique outweigh the advantages. Therefore, the paralleling technique is preferred over the bisecting technique for exposure of periapical films and should be used whenever possible.

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 28

With size 2 film, a total of ____ anterior film placements are used in the bisecting technique.

A) Four
B) Six
C) Seven
D) Eight

Question 29

For the mandibular molar exposure, the front edge of the film should be aligned with the midline of the:

A) Canine.
B) First premolar.
C) Second premolar.
D) First molar.

Question 30

Horizontal angulation refers to the placement of the position-indicating device (PID) in a(n) ____ plane. Vertical angulation refers to the positioning of the PID in a(n) ____ plane.

A) side-to-side; side-to-side
B) side-to-side; up-and-down
C) up-and-down; side-to-side
D) up-and-down; up-and-down

Question 31

The primary disadvantage of the bisecting technique when contrasted with the paralleling technique is:

A) Longer exposure times.
B) Dimensional distortion.
C) Requirement of a film holder.
D) Greater magnification.

Question 32

The recommended anterior periapical exposure sequence for the bisecting technique starts with the:

A) Maxillary right canine
B) Maxillary left canine
C) Mandibular right canine
D) Mandibular left canine