Bitewing technique l Oral radiology MCQs

Bitewing technique in dental x-ray l Oral radiology MCQs for dental students 

IMPORTANT POINTS TO REMEMBER

1. • Position of bite: The tab or bite platform should be positioned in the middle of the film packet and parallel to the upper and lower edges of the film packet.
2. • Position of film packet: The film packet should be positioned with its long axis horizontally for horizontal bitewing or vertically for vertical bitewing.
3. • Four sizes of the film are used in the bitewing radiography: size 0, size 1, size 2 and size 3 (27 × 54 mm).
4. • Horizontal angulation: In the horizontal plane, the X-ray tube head should be aimed in such a way that the beam is perpendicular to the teeth and film packet. It should pass through all of the contact areas.
5. • Vertical angulation: Positive 10° angulation should be used in case of molar bitewing, and positive 5° angulation is used for premolar bitewing.
6. • Point of entry: The central ray should be directed through the occlusal plane of teeth towards the centre of film packet.
7. • There are mainly three techniques available: simple film packet tab technique, simple film packet with film holder technique and reproducible film packet holder technique.
8. • Anterior bitewing: It may be necessary to take bitewing of anterior teeth to aid diagnosis. Vertical bitewing is taken in case of anterior bitewing.
9. • Vertical bitewing: It is used when desired area is not seen on the film with normal bitewing placement. Bitewing tab is placed with long portion of the film in a vertical direction.

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

1. Bitewing radiography is used in determination of

a. Occlusal caries

b. Attrition

c. Proximal caries

d. None of the above

2. Bite wing radiography is also known as

a. Periapical technique

b. Interproximal technique

c. Coronal technique

d. None of the above

3. Vertical angulation given for molar bite wing radiography is

a. Positive 5 degree

b. Positive 10 degree

c. Negative 5 degree

d. Negative 10 degree

4. Point of entry for bite wing radiograph is

a. Occlusal plane

b. Interproximal area

c. Cervical area

d. Midline of interested tooth

5. Four different sizes of film used in bite wing radiography are

a. Size 1, size 2, size 3, size 4

b. Size 0, size 1, size 2, size 3

c. Size 0, size 1, size 2, size 4

d. None of the above

6. Which of the following is an advantage of film packet Holder technique?

a. Simple

b. No displacement of film packet

c. Cone cut is avoided

d. All of the above

7. Bitewing radiographs are used in the examination of:

A. Apical areas of the teeth

B. Inter proximal areas of the teeth

C . Pulp chamber and apical areas of the teeth

D . Apical and interproximal areas of the teeth

8. Which of the following is the correct vertical angulation used for the bitewing technique:

A. Zero degree

B. Minus 10 degree

C. Plus 8 to 10 degree

D. Plus 15 degree

9. Which of the following is not visible on bitewing radiographs:

A. Insipient caries

B. Recurrent caries

C. Apical abscess

D. Alveolar crest resorption

10 . The best radiographic view for detecting the level of alveolar crest is:

A. PA view of the mandible

B. Bitewing radiograph

C. Periapical view

D. Orthopantomogram