Question 1

The most commonly used bur in the dental laboratory is:

Accepted Answer

A)  carborundum.
B)  sandpaper disks.
C)  acrylic bur.
D)  cuttlebone.E) None of the above
F) A) and D)

Question 2

A dental handpiece is identified as a _____ instrument that _____ be sterilized before reuse.

Accepted Answer

A)  critical; must
B)  semicritical; must
C)  semicritical; may or may not
D)  noncritical; may not beE) All of the above
F) None of the above

Question 3

Which of the following statements is true regarding the different types of shanks?

Accepted Answer

A)  The long, straight shank is used in the straight-line attachment, and fits on the high-speed handpiece.
B)  The long, straight shank is used in the angle attachment, and fits on the low-speed handpiece.
C)  The latch-type shank has a small groove at the end that mechanically locks into the contra-angle attachment, and fits on the high-speed handpiece.
D)  The friction-grip shank is short and smooth and has no retention grooves in the end. The shank is held in the high-speed handpiece by the creation of friction that grips the entire shank.E) A) and B)
F) None of the above

Question 4

The _____ handpiece operates from air pressure and reaches speeds up to 450,000 rpm.

Accepted Answer

A)  high-speed
B)  laser
C)  ultrasonic
D)  laboratoryE) A) and D)
F) C) and D)

Question 5

When cleaning a dental handpiece,it is important to:

Accepted Answer

A)  always lubricate the handpiece before sterilization.
B)  always lubricate the handpiece after sterilization.
C)  carefully follow the manufacturer's instructions.
D)  never use a lubricant on the handpiece.E) A) and B)
F) B) and D)

Question 6

The most varied category of rotary instruments is:

Accepted Answer

A)  diamond rotary instruments.
B)  laboratory burs.
C)  carbide burs.
D)  abrasive rotary instruments.E) A) and C)
F) All of the above

Question 7

The three basic parts of a rotary instrument are the:

Accepted Answer

A)  handle, shank, and working end.
B)  shank, neck, and head.
C)  neck, head, and handle.
D)  shank, neck, and working end.E) A) and D)
F) A) and C)

Question 8

The type of restoration material that requires finishing burs as well as sandpaper disks and cuttlebone point to finish and polish is:

Accepted Answer

A)  gold.
B)  stainless steel.
C)  amalgam.
D)  esthetic materials.E) B) and D)
F) A) and B)

Question 9

A #170 bur is used to:

Accepted Answer

A)  provide angles to the walls of a cavity preparation.
B)  create a shoulder for the margin of a crown preparation.
C)  remove decay.
D)  form internal walls of a cavity preparation.E) C) and D)
F) A) and C)

Question 10

The handpiece that uses mechanical,radiant water energy and sound vibrations to create a pulsating effect on a tooth surface for the removal of calculus and stains is the _____ handpiece.

Accepted Answer

A)  high-speed
B)  laser
C)  low-speed
D)  ultrasonicE) A) and B)
F) All of the above

Question 11

The most commonly used finishing burs are:

Accepted Answer

A)  flame-shaped.
B)  round-shaped.
C)  tapered.
D)  all of the above.E) A) and C)
F) None of the above

Question 12

The term applied to all rotary instruments that have a sharp cutting head is:

Accepted Answer

A)  wheel.
B)  diamond.
C)  bur.
D)  finishing stone.E) A) and D)
F) B) and C)

Question 13

A porcelain adjustments is made with a _____ handpiece.

Accepted Answer

A)  high-speed
B)  ultrasonic
C)  low-speed
D)  laserE) B) and D)
F) A) and B)

Question 14

The prophylaxis angle attaches to the _____ handpiece and is used to polish the teeth.

Accepted Answer

A)  laser
B)  laboratory
C)  high-speed
D)  low-speedE) All of the above
F) A) and B)

Question 15

Restorative burs are made from what material?

Accepted Answer

A)  Gold
B)  Tungsten carbide
C)  Titanium
D)  Stainless steelE) B) and C)
F) A) and D)

Question 16

A finishing bur has _____ blades on the working end than a restorative bur because it is used for final stage polishing of a restoration.

Accepted Answer

A)  fewer
B)  more
C)  the same number ofD) A) and B)
E) A) and C)

Question 17

Advantages of a laser handpiece over a high-speed handpiece include:

Accepted Answer

A)  faster preparation time.
B)  immediate vaporization of previous amalgam restorations.
C)  use of an air turbine.
D)  treatment that is usually painless, so anesthesia is unnecessary.E) A) and C)
F) A) and B)

Question 18

The most frequently used device in restorative dentistry is the:

Accepted Answer

A)  amalgamator.
B)  dental handpiece.
C)  prophy angle.
D)  x-ray machine.E) A) and B)
F) B) and D)

Question 19

A high-speed handpiece can reach how many rotations per minute (rpm) ?

Accepted Answer

A)  250,000
B)  100,000
C)  450,000
D)  300,000E) A) and B)
F) A) and C)

Question 20

The type of shank fits into a contra-angle attachment for a low-speed handpiece is a:

Accepted Answer

A)  friction-grip.
B)  straight.
C)  latch-type.
D)  round-type.E) A) and D)
F) B) and D)

Exam 35: Dental Handpieces and Accessories

A porcelain adjustments is made with a _____ handpiece.

Correct AnswerverifiedShow Answer

A finishing bur has _____ blades on the working end than a restorative bur because it is used for final stage polishing of a restoration.

Correct AnswerverifiedShow Answer

Advantages of a laser handpiece over a high-speed handpiece include:

Correct AnswerverifiedShow Answer

The handpiece that uses mechanical,radiant water energy and sound vibrations to create a pulsating effect on a tooth surface for the removal of calculus and stains is the _____ handpiece.

Correct AnswerverifiedShow Answer

A high-speed handpiece can reach how many rotations per minute (rpm) ?

Correct AnswerverifiedShow Answer

Which of the following statements is true regarding the different types of shanks?

Correct AnswerverifiedShow Answer

The term applied to all rotary instruments that have a sharp cutting head is:

Correct AnswerverifiedShow Answer

When cleaning a dental handpiece,it is important to:

Correct AnswerverifiedShow Answer

The most commonly used bur in the dental laboratory is:

Correct AnswerverifiedShow Answer

The _____ handpiece operates from air pressure and reaches speeds up to 450,000 rpm.

Correct AnswerverifiedShow Answer

The type of restoration material that requires finishing burs as well as sandpaper disks and cuttlebone point to finish and polish is:

Correct AnswerverifiedShow Answer

Restorative burs are made from what material?

Correct AnswerverifiedShow Answer

The prophylaxis angle attaches to the _____ handpiece and is used to polish the teeth.

Correct AnswerverifiedShow Answer

The most frequently used device in restorative dentistry is the:

Correct AnswerverifiedShow Answer

The type of shank fits into a contra-angle attachment for a low-speed handpiece is a:

Correct AnswerverifiedShow Answer

The most varied category of rotary instruments is:

Correct AnswerverifiedShow Answer

The three basic parts of a rotary instrument are the:

Correct AnswerverifiedShow Answer

The most commonly used finishing burs are:

Correct AnswerverifiedShow Answer

A #170 bur is used to:

Correct AnswerverifiedShow Answer

A dental handpiece is identified as a _____ instrument that _____ be sterilized before reuse.

Correct AnswerverifiedShow Answer

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A dental handpiece is identified as a _ instrument that _ be sterilized before reuse.

Correct Answer
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