NBDE Part 2 Practice Exam Series 15 – Endodontics NBDE Part 2 Study Guide

Question 11: What should be the minimum length of the gutta percha to preserve the apical seal?

A. 1 mm

B. 2 mm

C. 3 mm

D. 4 mm

Answer

Answer: [D]

 

Question 12: All of the following are indications of apicectomy except?

A. For retrograde filling

B. A tooth is non-restorable

C. Horizontal apical fracture

D. Poorly filled apical third

Answer

Answer: [B]

 

Question 13: Which of the following statement is correct?

Whenever an anterior tooth fractures it generally occurs in a vertical plane.

Inlays have been known to cause a tooth fracture.

 

A. Both statements are correct

B. Both statements are incorrect

C. The first statement is correct while the second statement is incorrect

D. The first statement is incorrect while the second statement is correct

Answer

Answer: [D]

 

Question 14: Which of the following are considered as the major objective of access preparation during root canal treatment?

A. Straight line access

B. Conservation of the tooth structure

C. Unroofing of the pulp chamber to remove pulp horns

D. All of the above

Answer

Answer: [D]

 

Question 15: By what percentage the success of the root canal treatment is reduced if a periapical lesion is present before the beginning of the treatment?

A. No effect on the success of treatment

B. 10 – 20%

C. 40 – 50%

D. 65 – 70%

Answer

Answer: [B]

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