1. During instrumentation of tooth #19, you realize that you are unable to negotiate your file to the complete working length. The procedural error that has occurred is most likely

Question 1 of 20

2. You have placed files in all three canals located in tooth #19 during a root canal procedure to obtain measurement. Upon taking the first radiograph, the two files in the distal canal are superimposed. For your second radiograph, you move the cone to the mesial. The resulting image shows both files in the distal canal. The file that has moved to the mesial is positioned:

Question 2 of 20

3. Which of the following microorganisms is associated with dental caries

Question 3 of 20

4. You have initiated root canal therapy on a patient when he suddenly experiences sudden pain during working length determination, begins to hemorrhage, and detects a burning sensation when you attempt to irrigate with sodium hypochlorite. What is the most likely cause of these symptoms?

Question 4 of 20

5. Cytokines associated with periapical lesions

Question 5 of 20

6. Ha Primary tooth is avulsed, what should be done:

Question 6 of 20

7. Abrasive particle size in fine grit diamond point:

Question 7 of 20

8. What percentage of EDTA is used for removal of smear layer in root canals:

Question 8 of 20

9. Purpose of giving occlusal offset:

Question 9 of 20

10. Which of the following tests is the least useful in endodontic diagnosis of children?

Question 10 of 20

11. According to Kim et al Classification Class III isthmus indicates:

Question 11 of 20

12. Polymerization shrinkage of composite causes compression stress of

Question 12 of 20

13. Pulpal pain response is

Question 13 of 20

14. Which of the following materials could be used to cement a bridge and fill a cervical lesion?

Question 14 of 20

15. Maintenance of pulp vitality in a fracture of crown with pulp exposure fracture will

Question 15 of 20

16. In Periapical index (PAI), Grade 3 is defined as:

Question 16 of 20

17. The crown-down preparation advocates beginning radicular access with

Question 17 of 20

18. In the inflammatory process, which of the following cell types function as phagocytes?

Question 18 of 20

19. A 35-year-old woman was in a horse back riding accident less than 1 hour ago. On clinical examination, the tooth is painful to palpation and has slight mobility. The tooth is fractured in the occlusal third and there appears to be no exposure. A periapical radiograph reveals fracture above the pulpal space and no periapical radiolucency. The treatment of choice for the asymptomatic maxillary central incisor is:

Question 19 of 20

20. Which one of the following is a caries assessment test:

Question 20 of 20