Exam 2 CH 39 Instruments and Principles for Instrumentation

Question 1

Sequence of instruments for treatment?

Answer 1

1. 11/12 Explorer
2. Ultrasonic
3. Scaler
4. Universal Curet
5. Area Specific/ Gracey (Used for fine scaling/root planning)

Question 2

Types of strokes by direction?

Answer 2

1. Diagonal or Oblique
2. Vertical
3. Horizontal

Question 3

Why do we not use a fulcrum on mobile teeth?

Answer 3

Because you do not have stability on mobile teeth and can cause further damage to an already weaken periodontium.

Question 4

What instruments are used for an examination?

Answer 4

Probe, Explorer, and mirror

Question 5

What instruments are used for treatment?

Answer 5

Curets and Scalers

Question 6

Term; Relationship between the working end of an instrument and the tooth surface being treated?

Answer 6

Adaptation

Question 7

Term; A curved , rounded dental instrument utilized for scaling, root planning, and gingival curettage?

Answer 7

Curet

Question 8

Term; A specialized instrument designed with specific angles in the shank for adaptation to a certain group of tooth structures?

Answer 8

Area-Specific Curet

Question 9

Term; A curet designed for use on any tooth surface where the adaptation, angulation and other principles of instrumentation can be correctly and effectively accomplished?

Answer 9

A Universal Curet

Question 10

Term; For an intraoral rest, the place on a tooth or teeth where the third or ring finger of the hand holding the instrument is placed to provide stabilization and control during activation of the instrument?

Answer 10

Finger Rest

Question 11

Term; Use of a dental mouth mirror to view the area of instrumentation. Indirect lighting is provided by the mirror?

Answer 11

Indirect vision

Question 12

Term; The minimal pressure that is required of an instrument against the tooth to accomplish the objective of the assessment or treatment?

Answer 12

Lateral Pressure

Question 13

Term; The blade of an area-specific gracey curet in which the lower shank is at 70 degree angle to the face of the blade; contrasts with a universal curet blade, which is at a 90 degree angle with the lower shank

Answer 13

Offset Blade

Question 14

Term; Instrument designed for initial removal of calculus, prior to finishing with a curet?

Answer 14

Scaler

Question 15

Term; The part of the shank next to the blade?

Answer 15

Lower or terminal Shank

Question 16

Parts of an instrument?

Answer 16

Working End, Shank and Handle

Question 17

Why do is Hollow handles preferred compared to solid handles?

Answer 17

Because they have enhanced tactile sensitivity and lessen fatigue

Question 18

Surface texture; Handles may be smooth, ribbed, or knurled is called?

Answer 18

Serrations

Question 19

T/F Serrations are for control and comfort without muscle fatigue, a smooth handle is avoided

Answer 19

True

Question 20

What type of handle do you want?

Answer 20

Serrated Hollow instrument

Question 21

T/F Straight shanks are used for Anterior(unrestricted) and Angled shanks are used for Posterior (restricted)

Answer 21

True

Question 22

T/F In general, the more restricted the tooth access, the more angled the shank is used

Answer 22

True

Question 23

T/F Heavier shanks are stronger and able to withstand greater pressure without flexing. They are needed for heavier calculus removal.

Answer 23

True

Question 24

T/F Less rigid, more flexible shanks provide more tactile sensitivity and are used to remove fine deposits

Answer 24

True

Question 25

T/F A finger rest is ALWAYS used when instruments are applied to the teeth and gingiva.

Answer 25

True

Question 26

What does adaption of a gracey give you?

Answer 26

Gives you access to get into a pocket better. | Longer shank, Shorter blade

Question 27

What is the modified pen grasp?

Answer 27

A three finger grasp with a specific target points of the thumb, index finger and middle finger all in contact with the instrument.

Question 28

How much of the blade is used during instrumentation?

Answer 28

1/3 or last 3mm of blade

Question 29

On a unviersal curet, the face of the blade is at what _______degree to the______?

Answer 29

90 | lower shank

Question 30

Area specific/ Gracey curets are what angle to the lower shank?

Answer 30

70

Question 31

What are the objectives of a Finger Rest?

Answer 31

1. Stability 2. Unit Control 3. Prevention of injury 4. Comfort for the pt 5. Control of length stroke

Question 32

What are the four diameter handles available?

Answer 32

3/8 5/16 1/4 3/16

Question 33

What is separable from the shank and working end. They permit instrument exchanges and replacements?

Answer 33

Cone socket

Question 34

T/F Principles for instrument use; Stability is essential for effective, controlled action of an instrument

Answer 34

True

Question 35

What are the causes of carpal tunnel?

Answer 35

Brought on by pressure on the median nerve in the carpal tunnel, is one of the nerve entrapment conditions that results from inappropriate work habits, such as working with a bent wrist

Question 36

What is the working end of an instrument?

Answer 36

The part used to carry out the purpose and function of the instrument. Each working end is unique to the particular instrument. The working end of a scaler or curet is the BLADE.

Question 37

What are problem areas for adaptation?

Answer 37

- Line angles - convex and rounded surfaces (narrow roots) - Cervical Area (root is constricted) - Proximal root surfaces (concave, longitudinal grooves)

Question 38

Form the back of the instrument?

Answer 38

Lateral surface