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Cleaning and Shaping of root canal

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Telescopic technique is the other name for____ technique

a)

Crown-Down

b)

Balanced force

c)

Step-back

d)

Anticurvature

2.

Which of the following is a corono-apical technique *

a)

Crown-Down

b)

Step-back

c)

Conventional

d)

Anti-curvature

3.

The instrument commonly used for circumferential filing is

a)

K-File

b)

H-File

c)

K-Reamer

d)

K-Flex

4.

Cleaning the canal in between instrumentation with a smaller file to clear it of debris is also known as

a)

Circumferential filing

b)

Recapitulation

c)

Step-back

d)

Watch-winding

5.

The function of the tip or line marking on a silicone stop is

a)

to show size

b)

to show number of uses

c)

to show direction of curvature of canal or file

d)

all of the above

6.

Which of the following is NOT Schilder's objectives

a)

Develop a continuously tapered funnel from the apex to the access cavity

b)

Make the canal narrower coronally

c)

Maintain the original anatomy of the canal

d)

The apical opening should be kept as small as practical

7.

In what phase of Step-Back technique is the step-back actually started?

a)

Phase 1

b)

Phase 2

c)

Phase 3

d)

Phase 4

8.

What will happen if the instrument goes beyond the apex

a)

Nothing

b)

The tooth will become mobile

c)

Patient may have pain and inflammation

d)

None of the above

9.

What is the advantage of Crown-Down Technique?

a)

Eliminates coronal interferences

b)

Freedom from the constraint of apical enlarging instruments

c)

Minimize or eliminate the amount of necrotic debris that could be extruded through AF

d)

All of the above

10.

Select the WRONG statement

a)

Do not force the instrument if it binds in canal

b)

Instrumentation be confined to the root canal

c)

Sequential use of instruments with periodic recapitulation

d)

Instrumentation should be done in DRY canal