1 Shift

List a major error in the access opening for:

1- Premolar:

2- Molar:

2 Shift

1- What is wrong in this access cavity design?

2- What is the necessary step needed to correct it?

3 Shift

A CB

Write down the type of Vertucci’s canal configurations for each tooth

4 Shift

1- What is the type of error?

2- Why it is happened?

5 Shift

1. What is the name of the device ?2. What is the name of the object marked with a RED arrow ?

6 Shift

Mention 2 uses of the rubber stopper ?

7

Shift

This Photograph shows root canal apical blockage with debris, this can be prevented by:1- 2-

8 Shift

1- Name of this instrument?

2- How can one knows the size of this instrument?

9

Shift

1- During crown down preparation of mesiobuccal canal of a lower molar what is it used for?2- On which wall should it be placed when used in mesiobuccal canal?

10

Shift

These two photomicrographs are for canal walls before and after removal of the smear layer

1- Mention one reason why do we have to remove the smear layer?2- How can it be removed?

11 Shift

• Name of material with red arrow

• Name of canal with yellow arrow

• This is an access for which tooth?

12 Shift

1- The name of both objects inside root canal

2- The function of object labeled with an arrow

13Shift

1- The name of this obturation technique

14

Shift

1- The name of this canal if this radiograph is taken with mesial angulation?

15 Shift

1- What are the possible sizes for this yellow colored file?2- write down the corresponding diameter for each size?3- what is the rate of tapering per millimeter?