Bisecting technique l Oral radiology MCQs

 

Bisecting Line Angle Technique l Oral radiology MCQs for dental students 

MCQ on intraoral radiographic technique (bisecting technique) for dental x-ray

1. Using the geometric principle of similar triangle, the actual length of the tooth in the mouth will be

a. Equal to the length of the image

b. Greater than the length of the image

c. Smaller than the length of the image

d. None of the above

2. The target to object distance should be

a. 4 in.

b. 9 in.

c. 8 in.

d. 6 in.

3. Which components form the angle referred to in the bisecting angle technique?

a. Tooth, film.

b. Film, central ray.

c. Central ray, bisector.

d. Aiming cylinder, tooth.

4. While taking radiograph of incisor and canine, the film should be placed

a. Vertically

b. Horizontally

c. None of the above

d. Both of the above

5. The size of the film used for all projections in the bisecting line angle technique in adults is

a. 2

b. 1

c. 3

d. 4

6. The angle between the film and teeth depends on the

a. Height of dome of the palate and depth of floor of the mouth

b. Depth of dome of the palate and height and floor of the mouth

c. All of the above

d. None of the above

7. Less vertical angulation in bisecting line angle technique results in

a. Foreshortening

b. Elongation

c. Overlapping

d. Cone cut

8. The shadow of the zygomatic bone is generally superimposed over root of the

a. Mandibular molars

b. Maxillary premolars

c. Maxillary molars

d. Mandibular premolars

9. In bisecting technique proper direction of the central ray is at right angle to:

A. Long axis of the tooth

B. Long axis of the film and long axis of the tooth

C. Film plane

D . Imaginary bisecting plane

10. Which decreases image distortion when utilizing the bisecting-angle technique?

a. Place film as close as possible to the teeth being imaged.

b. Place film as far as possible from the teeth being imaged.

c. Direct the central ray parallel to an imaginary plane that bisects the angle between the teeth and the film.

d. Direct the central ray perpendicular to an imaginary plane that bisects the angle between the teeth and the film.