Deck 35: Dental Handpieces and Accessories

Question 1

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

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.

Answer 1

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.

Question 2

The most frequently used device in restorative dentistry is the:

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

Answer 2

dental handpiece.

Question 3

The handpiece that can operate both forward and backward and can be used with a variety of attachments is the _____ handpiece.

A)high-speed
B)laboratory
C)low-speed
D)laser

Answer 3

low-speed

Question 4

The _____ handpiece supplies a water coolant,because it can generate enough frictional heat on a tooth to cause possible damage to the pulp.

A)air-abrasion
B)high-speed
C)low-speed
D)ultrasonic

Question 5

The ultrasonic handpiece is used for:

A)cavity preparation.
B)polishing.
C)scaling.
D)adjusting dentures.

Question 6

The parts of a rotary instrument are the:

A)shank, neck, and head.
B)handle, shank, and nib.
C)stem and cutting tips.
D)latch and grip.

Question 7

Which type of bur is used to remove decay during tooth preparation?

A)Round
B)Straight fissure plain cut
C)Straight fissure cross-cut
D)Tapered fissure plain cut

Question 8

Since the late 1940s,______ burs have been used for cavity preparation.

A)steel
B)tungsten carbide
C)molybdenum
D)palladium

Question 9

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

A)critical; must
B)semicritical; must
C)semicritical; may or may not
D)noncritical; may not be

Question 10

A _____-shaped diamond rotary instrument provides access to the pulp chamber.

A)cylinder
B)flame
C)wheel
D)round

Question 11

When cleaning a dental handpiece,it is important to:

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.

Question 12

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

A)laser
B)laboratory
C)high-speed
D)low-speed

Question 13

The high-speed handpiece uses _____ burs.

A)friction-grip
B)straight
C)latch
D)laboratory

Question 14

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

A)high-speed
B)laser
C)ultrasonic
D)laboratory

Question 15

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

A)wheel.
B)diamond.
C)bur.
D)finishing stone.

Question 16

The low-speed handpiece operates at _____ rotations per minute (rpm).

A)100 to 500
B)1000 to 5000
C)10,000 to 30,000
D)10,000 to 100,000

Question 17

The air abrasion technique uses high-pressure delivery of _____ particles through a small probe to remove tooth structure.

A)zirconium silicate
B)aluminum oxide
C)silicon carbide
D)tin oxide

Question 18

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

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.

Question 19

The handpiece that has the greatest torque (twisting or turning force)is the _____ handpiece.

A)laboratory
B)air abrasion
C)ultrasonic
D)high-speed

Question 20

The first dental handpiece was introduced in the:

A)1920s.
B)1930s.
C)1940s.
D)1950s.

Question 21

The three basic parts of a rotary instrument are the:

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

Question 22

A porcelain adjustments is made with a _____ handpiece.

A)high-speed
B)ultrasonic
C)low-speed
D)laser

Question 23

Because abrasive discs and wheels are supplied separately and not attached to a shank,a _____ is used to attach these abrasives to the dental handpiece.

A)console
B)mandrel
C)shank
D)torque

Question 24

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

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

Question 25

Rotary instruments were introduced in dentistry in the ______ to complement the use of hand instruments in the cutting,grinding,and polishing procedures.

A)1920s
B)1950s
C)1970s
D)1940s

Question 26

All of the following are uses for a low-speed handpiece except:

A)removal of old or faulty restorations.
B)finishing and polishing restorations.
C)root canal treatment.
D)coronal polishing and removal of stains.

Question 27

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.

A)high-speed
B)laser
C)low-speed
D)ultrasonic

Question 28

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

A)fewer
B)more
C)the same number of

Question 29

A #557 bur is a(n)_______ and is used for ________.

A)round bur; gaining entrance into tooth structure
B)straight fissure cross-cut; forming internal walls of the preparation
C)inverted cone; forming retention grooves
D)pear; extending cavity preparation

Question 30

All of the following are correct about diamond rotary instruments except they:

A)have a metal base with flecks of industrial diamonds.
B)are inexpensive.
C)increase cutting ability.
D)shorten preparation time and increase productivity.

Question 31

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

A)250,000
B)100,000
C)450,000
D)300,000

Question 32

The most varied category of rotary instruments is:

A)diamond rotary instruments.
B)laboratory burs.
C)carbide burs.
D)abrasive rotary instruments.

Question 33

A laser handpiece uses a beam of light to:

A)remove old restorations.
B)cauterize soft tissue.
C)do vaporize decayed tooth structure.
D)both b and c

Question 34

Laboratory burs have a _____ shank and a _____ head than dental burs.

A)shorter; smaller
B)longer; smaller
C)shorter; larger
D)longer; larger

Question 35

The most commonly used finishing burs are:

A)flame-shaped.
B)round-shaped.
C)tapered.
D)all of the above.

Question 36

The metal shaft on which sandpaper disks and other abrasives are mounted is called a:

A)shaft.
B)working end.
C)screw.
D)mandrel.

Question 37

Which type (#)of bur helps to provide angles to the walls of the cavity preparation with retention grooves?

A)699
B)4
C)56
D)330

Question 38

Which type of rotary instrument shank is placed into a high-speed handpiece?

A)Straight
B)Friction-grip
C)Latch-type
D)Curved

Question 39

A #170 bur is used to:

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.

Question 40

The two most common types of dental handpieces are _____ handpieces.

A)high-speed and laser
B)ultrasonic and laser
C)low-speed and high-speed
D)high-speed and ultrasonic

Question 41

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

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

Question 42

Air abrasion handpieces are most effective when used for:

A)external stain removal.
B)sealants.
C)crown preparations.
D)both a and b

Question 43

Restorative burs are made from what material?

A)Gold
B)Tungsten carbide
C)Titanium
D)Stainless steel

Question 44

The most commonly used bur in the dental laboratory is:

A)carborundum.
B)sandpaper disks.
C)acrylic bur.
D)cuttlebone.