**Restorative/General Dentistry

Question 1

What is a vertical or horizontal surface within the cavity prep named for the surface(s) toward which it faces or approximates?

Answer 1

wall/floor

Question 2

Define: cavosurface

Answer 2

the uncut tooth structure adjacent to the cavity prep

Question 3

What is the different between a line angle and a point angle?

Answer 3

a line angle is the junction of two walls and a point angle is the junction of three walls within a cavity prep

Question 4

Define: retentive features

Answer 4

grooves, pits or prepped areas in the dentin along the line angles or point angles of the cavity prep, to enhance the mechanical retention of the restorative materials

Question 5

Define: pit and fissure cavity classifications

Answer 5

enamel defects that result from the incomplete fusion of the enamel in the developmental stages of a tooth

Question 6

Define: smooth surface cavity classifications

Answer 6

begin on smooth tooth structure that is not kept clean and/or is not inaccessible to clean

Question 7

Where is a Class 1 cavity prep located?

Answer 7

in the occlusal, lingual and facial surfaces

Question 8

Where is a Class 2 cavity prep located?

Answer 8

on the proximal surfaces of posterior teeth

Question 9

Where is a Class 3 cavity prep located?

Answer 9

on the proximal surfaces of anterior teeth; not involving the incisal edge

Question 10

Where is a Class 4 cavity prep located?

Answer 10

on the proximal surfaces of anterior teeth, including the incisal edge

Question 11

Where is a Class 5 cavity prep located?

Answer 11

on the gingival/cervical third of the facial/buccal or lingual surfaces

Question 12

Where is a Class 6 cavity prep located?

Answer 12

on the incisal edge of anterior teeth or the cusp tips of posterior teeth

Question 13

How many retentive pins are commonly placed for each missing cusp?

Answer 13

one

Question 14

What are the three types of retentive pins?

Answer 14

-cemented
-friction-lock
-threaded

Question 15

How is a cemented pin held in place?

Answer 15

by cement

Question 16

How is a friction-lock pin held in place?

Answer 16

mechanically in the dentin

Question 17

How is a threaded pin held in place?

Answer 17

mechanically by the dentin

Question 18

List some common materials used for temporary restorations.

Answer 18

-zinc oxide-eugenol
-glass ionomer
-zinc phosphate
-polycarboxylate

Question 19

True or False: Temporary restorations are typically left out of occlusion.

Answer 19

True

Question 20

Define: armamentarium

Answer 20

the equipment, instruments, and materials needed to complete a procedure

Question 21

What is the purpose of the working end of an instrument?

Answer 21

to carry out the function of the instrument

Question 22

What is the purpose of the shank of an instrument?

Answer 22

to connect the working end to the handle

Question 23

What is the purpose of the handle of an instrument?

Answer 23

to hold/grasp the instrument

Question 24

How are condenser instruments used?

Answer 24

to condense or adapt restorative material into a cavity prep

Question 25

Define: nib

Answer 25

the flat, smooth, working end of a condenser

Question 26

How are carver instruments used?

Answer 26

to remove excess restorative materials and to contour the materials to blend with the natural tooth structure

Question 27

How are burnisher instruments used?

Answer 27

to smooth amalgam after it has been placed in the cavity prep

Question 28

What is the maximum rotations per minute (RPMs) for a high speed handpiece?

Answer 28

450,000

Question 29

Why does the high-speed handpiece spray air/water during prep?

Answer 29

because the handpiece generates an extreme amount of heat, which can irritate the pulp

Question 30

What is the maximum rotations per minute (RPMs) of a slow speed handpiece?

Answer 30

30,000

Question 31

What is the working end of the bur?

Answer 31

the head

Question 32

What connects the head of the bur to the shank?

Answer 32

the neck

Question 33

What part of the bur is placed into the chuck of the handpiece to hold the bur inside?

Answer 33

the shank

Question 34

How is a friction-grip shank held into the handpiece?

Answer 34

with friction

Question 35

How is a latch-type shank held into the handpiece?

Answer 35

by notched areas on the shank to latch into the handpiece

Question 36

What is the term for how an instrument is held?

Answer 36

grasp

Question 37

Which instrument grasp is used when the instrument is supported between the index finger, middle finger, and thumb

Answer 37

pen grasp

Question 38

Which instrument grasp is used when the instrument is supported like a pen, but the pad of the middle finger is placed on the handle of the instrument?

Answer 38

modified pen grasp

Question 39

What is the ideal finger to use as a fulcrum?

Answer 39

the third finger

Question 40

Define: fulcrum

Answer 40

the point of support or rest from which the hand moves to activate the instrument and obtain the best position or adaptation

Question 41

What is the term describing the relationship between the working end of the instrument and the tooth surface?

Answer 41

instrument adaptation

Question 42

What is the term describing the movement of an instrument?

Answer 42

instrument activation

Question 43

Where is the pressure transferred when the instrument is activated?

Answer 43

to the working end of the instrument

Question 44

Define: ergonomics

Answer 44

an applied science concerned with the design and arranging work area for efficiency in the workplace

Question 45

How should the operator's thighs be positioned for proper ergonomics?

Answer 45

parallel to the floor

Question 46

How should the operator's lower legs be positioned for proper ergonomics?

Answer 46

perpendicular to the floor

Question 47

How should the operator's feet be positioned for proper ergonomics?

Answer 47

flat against the floor

Question 48

How far should the distance be between the patient's face and the operator's face?

Answer 48

12-14 inches

Question 49

In right-handed dentistry, what is the operator zone in the "clock" diagram?

Answer 49

7-12:00

Question 50

In left-handed dentistry, what is the operator zone in the "clock" diagram?

Answer 50

12-5:00