Obturation of a root canal should achieve the following:

• Tug Back

• Hermetic seal

• Fluid free seal

• Leakage from accessory canal

The largest component of Gutta Percha is :

• Gutta percha

• Zinc oxide

• Resins & waxes

• Coloring agents

Bismuth compounds are incorporated in the obturating materials because they are __________

Name any two methods for determining Working Length of a root canal.

The endodontic K-file in this image is which number file as per the ISO color coding standarization of endodontic insruments?

• 20

• 25

• 15

• 30

Which irrigant is commonly used for irrigation of the root canal system?

• Saline

• Chlorhexidine

• Sodium hypochlorite

• EDTA

Do u think that the Coronal seal is as important as apical seal in a root canal treated tooth?

• Yes

• No

• Maybe

• Don't know

Vertical compaction of warm gutta percha technique was given by

• Grossman

• Ingle

• Cohen

• Schilder

This image is of which endodontic instrument?

• Gates Glidden drill

• Lentulospirals

• Peeso Reamer

• Protaper

What is the most prominent mistake during access cavity on the above picture?

• Missing a canal

• Improper rubber dam isolation

• Failed to deroof the pulp chamber

• Improper outline form of the access cavity