UNIT 2

Question 1

Each of the following is characteristic of an ideal fulcrum position:

Answer 1

• Fulcrum as close to the working area as possible.
• Fulcrum in the same quadrant that is being worked on.
• Fulcrum on the same arch that is being worked on.

Question 2

Instruments used to place, condense, and carve the dental material back to the normal anatomy of the tooth are classified as:

Answer 2

restorative

Question 3

Viewing an object with a mirror is called ________ vision.

Answer 3

indirect

Question 4

When passing a dental instrument with the single-handed technique, the dental assistant should grasp the instrument from the tray setup:

Answer 4

at the end of the handle or opposite the working end.

Question 5

Hand instruments are designed with three specific parts: the handle, the shank, and the:

Answer 5

working end.

Question 6

A flexible mixing spatula (#15, #24) is:

Answer 6

used to mix liners, bases, and cements.

Question 7

The correct method for transferring cotton pliers to the operator is by:

Answer 7

pinching the beaks together and offering the handle first.

Question 8

A (blank) is a type of instrument used to place and shape the amalgam material before it hardens.

Answer 8

restorative instrument

Question 9

A light source available on high-speed handpieces is a fiber-optic light source.

Answer 9

True

Question 10

The part of the instrument that attaches the working end to the handle is the:

Answer 10

shank

Question 11

The instrument used primarily for the removal of decay and soft dentin is a(n):

Answer 11

spoon excavator

Question 12

A color-coded light or intercom system is an effective way for the dental team to communicate.

Answer 12

true

Question 13

The two basic setup instruments that can be transferred simultaneously using the two-handed transfer are the:

Answer 13

hand mirror and explorer

Question 14

The types of instruments that allow the operator to inspect the health status of the oral cavity thoroughly are ___________ instruments.

Answer 14

examination

Question 15

Dental instruments and materials are exchanged in the ____________ zone.

Answer 15

transfer

Question 16

The gingival margin trimmer is a type of:

Answer 16

chisel

Question 17

A restorative instrument made from anodized aluminum or Teflon is a(n):

Answer 17

composite placing instrument

Question 18

A monangle has how many angles?

Answer 18

one

Question 19

What are examples of an accessory instrument?

Answer 19

• Scissors
• Howe pliers
• Spatula
• Cement and Impression spatulas.

Question 20

For the treatment room light to be used effectively for indirect vision, it should be positioned from the ___________ if you are a right-handed operator.

Answer 20

left side

Question 21

For the right-handed operator, the mouth mirror is transferred with the ___________ hand and the explorer is transferred with the ___________ hand.

Answer 21

right, left

Question 22

In preparation for seating the patient in the dental chair, the:

Answer 22

arm on the entrance side is raised.

Question 23

A discoid-cleoid is a double-ended variety of a(n):

Answer 23

carver

Question 24

Dental hand instruments:

Answer 24

must be able to withstand sterilization procedures.

Question 25

What term describes having a sense of touch or feeling?

Answer 25

tactile

Question 26

A finger rest is also called the:

Answer 26

fulcrum

Question 27

Instruments with hinges are:

Answer 27

transferred by directing the handles into the dentist’s palm.

Question 28

During four-handed dentistry, the operator must have:

Answer 28

easy access to the patient’s oral cavity.

Question 29

The working end of an explorer is best described as:

Answer 29

thin and wirelike.

Question 30

Which number represents the length of the blade according to G.V. Black’s instrument formula?

Answer 30

second

Question 31

The hand cutting instrument used to manually remove decayed tooth structure is the:

Answer 31

excavator

Question 32

Based on the “clock concept” of operating zones, the patient’s face would represent what area?

Answer 32

The center of the clock with the top of the head at the 12-o’clock position

Question 33

When receiving a used instrument in a single-handed transfer, the assistant uses the ____________ of the hand.

Answer 33

last two fingers

Question 34

In a tray setup, the instruments placed the farthest to the left are _________ instruments.

Answer 34

basic setup

Question 35

Team dentistry is also referred to as:

Answer 35

four handed dentistry

Question 36

All of the following are goals of team dentistry, or four-handed dentistry:

Answer 36

* use moisture control techniques to improve visibility of the work field. * minimize stress and fatigue during dental procedures. * follow motion economy during instrument transfer.

Question 37

Mouth mirrors can be used for:

Answer 37

* light reflection. * retraction. * indirect vision.

Question 38

An instrument used to place and remove items from the oral cavity is ____________.

Answer 38

cotton pliers

Question 39

A plugger is also known as a(n):

Answer 39

amalgam condenser.

Question 40

The correct positioning of the operator’s stool should include:

Answer 40

height of chair maintained to keep operator’s forearms parallel to the floor when bent at the elbow.

Question 41

The type of scissors most often associated with restorative dental procedures are _________ scissors.

Answer 41

crown and bridge

Question 42

The instrument that transports freshly triturated amalgam from an amalgam well to a cavity preparation is the amalgam:

Answer 42

carrier

Question 43

Which instrument grasp holds the instrument in the palm of the hand and uses the thumb to stabilize and guide the instrument?

Answer 43

Palm-thumb grasp

Question 44

The dentist and the dental assistant try to eliminate or reduce Class ________ movements to reduce stress and body fatigue.

Answer 44

IV and V

Question 45

A burnisher has a:

Answer 45

smooth working end

Question 46

Double-ended hand instruments are characterized by having two working ends and:

Answer 46

two shanks

Question 47

Which type of mirror magnifies the image?

Answer 47

concave

Question 48

The instrument exchange used to transfer surgical instruments is a:

Answer 48

two-handed instrument exchange.