Question 1

Which type of diamond bur is used to reduce a tooth for a crown preparation when parallel walls and flat floors are needed for the restoration?

Accepted Answer

A)  Flame
B)  Wheel
C)  Flat-end taper
D)  Flat-end cylinderE) B) and C)
F) None of the above

Question 2

Which of the following are parts of a bur?

Accepted Answer

A)  Head
B)  Neck
C)  Shank
D)  All of the aboveE) A) and B)
F) A) and C)

Question 3

When the dentist requests a No. 701 bur for a cavity preparation, what type of bur would you place in the handpiece?

Accepted Answer

A)  Round bur
B)  Inverted cone
C)  Straight fissure-crosscut
D)  Tapered fissure-plain cut
E)  Tapered fissure-crosscutF) B) and D)
G) A) and B)

Question 4

A friction grip bur fits into which type of handpiece?

Accepted Answer

A)  High-speed
B)  High-speed fiberoptic
C)  Slow-speed straight
D)  Slow-speed contra-angleE) B) and C)
F) None of the above

Question 5

Which type of diamond bur is used to reduce a tooth for a crown preparation on the lingual aspect of anterior teeth and for bulk reduction of incisal edges?

Accepted Answer

A)  Flame
B)  Wheel
C)  Flat-end taper
D)  Flat-end cylinderE) B) and C)
F) All of the above

Question 6

Darker grit on a composite disc indicates the disc is _______.

Accepted Answer

A)  fine
B)  coarse
C)  medium
D)  The color of the grit is not significant.E) B) and C)
F) None of the above

Question 7

Which type of diamond bur is used for a crown preparation when subgingival margins are needed?

Accepted Answer

A)  Flame
B)  Wheel
C)  Flat-end taper
D)  Flat-end cylinderE) All of the above
F) A) and C)

Question 8

Which type of bur is a No. 57?

Accepted Answer

A)  Round bur
B)  Inverted cone
C)  Straight fissure-plain cut
D)  Tapered fissure-plain cut
E)  Straight fissure-crosscutF) B) and D)
G) A) and B)

Question 9

The rotation instrument designed to contour a composite restoration is a

Accepted Answer

A)  rubber point.
B)  sandpaper disc.
C)  composite disc.
D)  diamond bur wheel.
E)  Both B and C are correct.F) B) and E)
G) D) and E)

Question 10

A bur with a latch at the end of the shank fits into which type of handpiece?

Accepted Answer

A)  High-speed
B)  High-speed fiberoptic
C)  Slow-speed straight
D)  Slow-speed contra-angleE) B) and C)
F) B) and D)

Question 11

What type of bur is a No. 556?

Accepted Answer

A)  Round bur
B)  Inverted cone
C)  Straight fissure-crosscut
D)  Tapered fissure-plain cut
E)  Tapered fissure-crosscutF) C) and D)
G) C) and E)

Question 12

What does the notation "L" following a bur number indicate?

Accepted Answer

A)  For lingual use
B)  Latch
C)  Long
D)  None of the above are correct.E) B) and D)
F) A) and B)

Question 13

Identify the number of the bur that has tapered sides with horizontal cutting edges.

Accepted Answer

A)  157
B)  168
C)  330
D)  699
E)  701F) A) and B)
G) A) and C) D

Question 14

Which of the following is a tapered fissure-plain cut bur?

Accepted Answer

A)  8
B)  57
C)  168
D)  699E) All of the above
F) C) and D)

Question 15

Which of the following is not a function of a finishing bur?

Accepted Answer

A)  Finish composite restoration.
B)  Equilibrate or adjust occlusion.
C)  Finish restoration by restoring anatomy in tooth.
D)  Place retention grooves in walls of cavity preparation.E) A) and B)
F) A) and C)

Question 16

Which of the following is used to polish restorations, amalgam, composite, and gold?

Accepted Answer

A)  Round finishing bur
B)  Flame diamond bur
C)  Brown points
D)  Green points
E)  C and D are both used.F) A) and E)
G) All of the above

Question 17

Which type of diamond bur is used to reduce a tooth for a crown preparation when a square shoulder is needed?

Accepted Answer

A)  Flame
B)  Wheel
C)  Flat-end taper
D)  Flat-end cylinderE) C) and D)
F) B) and C) D

Question 18

Which bur forms angles and retention grooves in the walls of a cavity preparation?

Accepted Answer

A)  10
B)  57
C)  168
D)  699
E)  Both C and D are correct.F) B) and D)
G) A) and D)

Question 19

Which of the following would you select if the dentist requested a No. 330 bur?

Accepted Answer

A)  Round bur
B)  Inverted cone
C)  Pear-shaped bur
D)  Straight fissure-crosscut
E)  Tapered fissure-crosscutF) A) and E)
G) C) and D) C

Question 20

Which of the following burs has parallel sides without horizontal cutting edges?

Accepted Answer

A)  Straight fissure bur-crosscut
B)  Tapered fissure bur-plain cut
C)  Tapered fissure bur-crosscut
D)  None of the aboveE) None of the above
F) B) and D)

Exam 6: Burs and Rotary Attachments for Handpieces

Which type of diamond bur is used to reduce a tooth for a crown preparation when parallel walls and flat floors are needed for the restoration?

Correct AnswerverifiedShow Answer

Which of the following are parts of a bur?

Correct AnswerverifiedShow Answer

When the dentist requests a No. 701 bur for a cavity preparation, what type of bur would you place in the handpiece?

Correct AnswerverifiedShow Answer

A friction grip bur fits into which type of handpiece?

Correct AnswerverifiedShow Answer

Which type of diamond bur is used to reduce a tooth for a crown preparation on the lingual aspect of anterior teeth and for bulk reduction of incisal edges?

Correct AnswerverifiedShow Answer

Darker grit on a composite disc indicates the disc is _______.

Correct AnswerverifiedShow Answer

Which type of diamond bur is used for a crown preparation when subgingival margins are needed?

Correct AnswerverifiedShow Answer

Which type of bur is a No. 57?

Correct AnswerverifiedShow Answer

The rotation instrument designed to contour a composite restoration is a

Correct AnswerverifiedShow Answer

A bur with a latch at the end of the shank fits into which type of handpiece?

Correct AnswerverifiedShow Answer

What type of bur is a No. 556?

Correct AnswerverifiedShow Answer

What does the notation "L" following a bur number indicate?

Correct AnswerverifiedShow Answer

Identify the number of the bur that has tapered sides with horizontal cutting edges.

Correct AnswerverifiedD

Which of the following is a tapered fissure-plain cut bur?

Correct AnswerverifiedShow Answer

Which of the following is not a function of a finishing bur?

Correct AnswerverifiedShow Answer

Which of the following is used to polish restorations, amalgam, composite, and gold?

Correct AnswerverifiedShow Answer

Which type of diamond bur is used to reduce a tooth for a crown preparation when a square shoulder is needed?

Correct AnswerverifiedD

Which bur forms angles and retention grooves in the walls of a cavity preparation?

Correct AnswerverifiedShow Answer

Which of the following would you select if the dentist requested a No. 330 bur?

Correct AnswerverifiedC

Which of the following burs has parallel sides without horizontal cutting edges?

Correct AnswerverifiedShow Answer

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D

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D

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C

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