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Expanded Functions Dental Assisting (EFDA)- Pennsylvania > **Restorative/General Dentistry > Flashcards

**Restorative/General Dentistry Flashcards

1
Q

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

A

wall/floor

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2
Q

Define: cavosurface

A

the uncut tooth structure adjacent to the cavity prep

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3
Q

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

A

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

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4
Q

Define: retentive features

A

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

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5
Q

Define: pit and fissure cavity classifications

A

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

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6
Q

Define: smooth surface cavity classifications

A

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

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7
Q

Where is a Class 1 cavity prep located?

A

in the occlusal, lingual and facial surfaces

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8
Q

Where is a Class 2 cavity prep located?

A

on the proximal surfaces of posterior teeth

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9
Q

Where is a Class 3 cavity prep located?

A

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

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10
Q

Where is a Class 4 cavity prep located?

A

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

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11
Q

Where is a Class 5 cavity prep located?

A

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

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12
Q

Where is a Class 6 cavity prep located?

A

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

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13
Q

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

A

one

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14
Q

What are the three types of retentive pins?

A

-cemented
-friction-lock
-threaded

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15
Q

How is a cemented pin held in place?

A

by cement

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16
Q

How is a friction-lock pin held in place?

A

mechanically in the dentin

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17
Q

How is a threaded pin held in place?

A

mechanically by the dentin

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18
Q

List some common materials used for temporary restorations.

A

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

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19
Q

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

A

True

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20
Q

Define: armamentarium

A

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

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21
Q

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

A

to carry out the function of the instrument

22
Q

What is the purpose of the shank of an instrument?

A

to connect the working end to the handle

23
Q

What is the purpose of the handle of an instrument?

A

to hold/grasp the instrument

24
Q

How are condenser instruments used?

A

to condense or adapt restorative material into a cavity prep

25
Q

Define: nib

A

the flat, smooth, working end of a condenser

26
Q

How are carver instruments used?

A

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

27
Q

How are burnisher instruments used?

A

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

28
Q

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

A

450,000

29
Q

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

A

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

30
Q

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

A

30,000

31
Q

What is the working end of the bur?

A

the head

32
Q

What connects the head of the bur to the shank?

A

the neck

33
Q

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

A

the shank

34
Q

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

A

with friction

35
Q

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

A

by notched areas on the shank to latch into the handpiece

36
Q

What is the term for how an instrument is held?

A

grasp

37
Q

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

A

pen grasp

38
Q

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?

A

modified pen grasp

39
Q

What is the ideal finger to use as a fulcrum?

A

the third finger

40
Q

Define: fulcrum

A

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

41
Q

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

A

instrument adaptation

42
Q

What is the term describing the movement of an instrument?

A

instrument activation

43
Q

Where is the pressure transferred when the instrument is activated?

A

to the working end of the instrument

44
Q

Define: ergonomics

A

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

45
Q

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

A

parallel to the floor

46
Q

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

A

perpendicular to the floor

47
Q

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

A

flat against the floor

48
Q

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

A

12-14 inches

49
Q

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

A

7-12:00

50
Q

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

A

12-5:00

Expanded Functions Dental Assisting (EFDA)- Pennsylvania (12 decks)

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