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Removable Partial Prosthodontics > TQ > Flashcards

TQ Flashcards

1
Q

What is the external finish line?

A

external junction of the framework to the plastic denture base

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2
Q

When biting down, the I-bar moves in what direction?

A

mesial & down

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3
Q

Tissue undercut can prevent selection of:

a) suprabulge
b) infrabulge
c) minor connector

A

infrabulge

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4
Q

Which of the following major connectors is NOT used in a maxillary arch?

A

lingual bar

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5
Q

What is the most commonly used major connector for class III RPDs?

A

Palatal strap

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6
Q

Width of straps used in AP major connector?

A

6-8 mm

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7
Q

Depth of marginal ridge in rest seat:

A

1-1.5 mm

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8
Q

Undercut for a cast chromium clasp:

A

0.01 inches

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9
Q

T/F: The proximal plate is adjusted before the rest seat. S-curved survey line is for retentive, not reciprocal

A

Both statements true

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10
Q

Which function of major connectors disperses lateral forces?

A

cross-arch stabilization

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11
Q

What RPD component transfers forces down the long axis?

A

rest

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12
Q

Order of tooth modifications:

A
  1. guide planes
  2. survey line adjustment
  3. rest seat
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13
Q

T/F: Co-Cr is used at UMKC. Co-Cr is more commonly used to nickel sensitivity.

A

Both statements true

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14
Q

Proximal 2/3 of reciprocal clasp in _____. Terminal 1/3 of reciprocal clasp in ____.

A

Middle; middle

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15
Q

Why do we not want excessive tilt to the cast when surveying?

A

want cast to be perpenidicular to the occlusal plane

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16
Q

Kennedy classification with NO modifications:

A

Class IV

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17
Q

Terminal 1/3 of retentive clasps is where on abutment tooth?

A

gingival 1/3

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18
Q

What does NOT apply to guiding planes?

A

Never use an occlusal rest on mesially tilted mandibular molars for rest seats

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19
Q

fabrication of the RPD framework is performed on:

A

master cast

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20
Q

what is the pod?

A

part of the I-bar that contacts the 0.01” undercut

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21
Q

What do you remove on alternative/altered cast?

A

distal extensions

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22
Q

What is drawn in red on the cast?

A

Undercuts

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23
Q

Where can you NOT put an I-bar clasp?

A

DF undercut

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24
Q

T/F: As the length of the guiding plane increases, frictional retention is increased. When length is increased, resistance to rotation is increased.

A

both true

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25
Q

You have a #19, #22, #23, #24, and #25 missing, what classification?

A

Kennedy class III mod 1

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26
Q

What is the classification for a B/L distal extension?

A

Class I

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27
Q

T/F: Borders for lingual bar 3-4 from the free gingival margin. The distance best measured on the cast.

A

True; False- distance should be measured in the mouth

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28
Q

Axis of rotations are determined by:

A

positions of primary rests

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29
Q

T/F: There is no axis of rotation in a Kennedy class II RPD because there is no functional movement across the median suture in the maxilla:

A

False- There is functional movement and axis of rotation

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30
Q

The tooth that supports prosthesis is called:

A

abutment

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31
Q

Least rigid major connector:

A

horseshoe (U-shaped)

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32
Q

Which statement about the principle of encirclement is false?

A

RPI doesn’t satisfy it

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33
Q

“long” guiding planes length (tooth-supported RPD)

A

3-4 mm

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34
Q

“short” guiding planes length (tooth-tissue supported RPD)

A

1.5 mm

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35
Q

Which of the following is NOT required for clasp assembly?

  • stability
  • reciprocation
  • retention
A

None of them- all of them are required

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36
Q

The best clasp choice for stress receive in tooth-tissue supported RPDs?

A

RPI

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37
Q

What tooth do we use a composite cingulum rest and why?

A

mandibular canine due to thiner enamel

38
Q

A patient present with all maxillary teeth. Which does not contribute to Kennedy classification?

A

presence of tori

39
Q

Which of the following is not acceptable terminology?

A

flipper

40
Q

In applegate, the most ___ edentulous area ____ determines the calssificaiton

A

posterior; always

41
Q

T/F: Tilting the cast changes the HOC. You use the tip of the carbon marker to mark the HOC.

A

True; false- should use the side of the carbon marker

42
Q

RPI clasp is what type of lever?

A

Class II

43
Q

When is a lingual plate major connector NOT indicated?

A

anterior crowding

44
Q

What connects the major connector to other pieces of the framework?

A

minor connector

45
Q

T/F: Looking from the occlusal, it is ideal to preserve the round structure of the tooth. The rest should be 1/2 the distance between cusp tips.

A

Both true

46
Q

What component of the framework is RIGID and lies above the survey line?

A

reciprocal clasp

47
Q

T/F: You would use the altered cast technique on class I and III RPD designs:

A

False- should be class I and II

48
Q

Which of the following is true concerning guiding planes?

A- as wide as 1/2 the distance between cusp tips
B- 1/3 the buck-lingual width of the tooth
C- can be extended further than 1/2 the medial-distal width in some cases
D- All of the above

A

D- all of the above

49
Q

You should use altered cast technique on class I and III:

A

false

50
Q

What is the RIGID component preventing gingival movement DOWN:

A

Rest (not rest seat)

51
Q

Which is entirely above the height of contour:

A

reciprocal arm

52
Q

The reciprocal arm is ____ middle 1/3 and ____ gingival 1/3

A

above; above

53
Q

What Kennedy class does NOT have modifications?

A

Class IV

54
Q

Which would not be included in classification/modification?

A

Torus

55
Q

You make the final metal RPD component on:

A

master cast

56
Q

You want the path of insertion to be:

A

perpendicular to the occlusal plane

57
Q

A class II RPD does not have rotation forces across midline suture:

A

false

58
Q

A lingual plate can’t be used when there is:

A

anterior crowding

59
Q

The retentive height of contour should have S-shape:

A

true

60
Q

If you have tissue undercuts, what clasp type should be used?

A

circumferential

61
Q

The width of the anterior-posterior palatal strap:

A

6-8 mm

62
Q

What teeth and why do you add composite on for a cingulum rest?

A

Mandibular canine because not enough enamel

63
Q

Reduction needed over the marginal ridge of a rest seat:

A

1.0-1.5 mm

64
Q

What undercut is needed for circumferential clasp?

A

0.01 inches

65
Q

What joins the denture base with another thing?

A

minor connector

66
Q

What type of lever is an RPI?

A

Class II

67
Q
A
68
Q

List the order of surveying a cast:

A
  1. guiding planes
  2. re-survey
  3. rest seats
69
Q

What word do we not called a partial removable denture?

A

flipper

70
Q

In class III RPDs, what type of major connector is used?

A

palatal strap

71
Q

What is not a major connector in the maxillary?

A

lingual bar

72
Q

What is the disadvantage of a horseshoe (u-shaped) major connector?

A

Not rigid

73
Q

In the adjusted cast design, which of the following is removed from the original master cast?

A

Distal edentulous areas

74
Q

In an RPI design, the I bar moves ___ when a patient bites down on the distal extension part:

A

down and mesial

75
Q

The “pod” referes to:

A

I-bar engaging 0.01” undercut

76
Q

All of the following are true about rests except:

A

NEVER put a rest on a mesially inclined molar

(what is true- 1/3 buccal-lingual length; 1/2 width from cusp tip to cusp tip; In some cases, it is okay to extend more than 1/2 the length mesial-distally)

77
Q

RPI acts as a ____ lever

A

class II

78
Q

T/F :When looking from occlusion, it is ideal to preserve the round structure of the tooth, and the guide plane should be 1/2 the width from cusp tip to cusp tip?

A

Both true

79
Q

In a tooth-tissue supported RPD, what is the length of the guide plane?

A

1.5-2.0 mm

80
Q

In a tooth supported RPD, what is the length of the guide plane?

A

3-4 mm

81
Q

Which is marked in red during diagnostic cast design?

A

Retentive undercut

82
Q

bracing elements on one side of the arch, providing stability on the other side:

A

Cross-arch stabilization (counter leverage)

83
Q

The connecting link between the major connector or base of the RPD and other units of the prosthesis such as direct & indirect retainers and rests:

A

minor connector

84
Q

Do rests provide retention?

A

NO- they transfer forces down the long axis of the abutment tooth

85
Q

What is the main retention of the prosthesis?

A

direct retainers

86
Q

Prevents vertical displacement of the distal extension denture base:

A

Indirect retainers

87
Q

Indirect retainers are ALWAYS necessary in:

A

Ken Class I and II

88
Q

Indirect retainers should be located:

A

perpendicular to the fulcrum line, as far away as possible

89
Q

Prevents the movement of the RPD towards the tissues:

A

indirect retainers

90
Q

The proximal plate of the RPD is considered:

A

A minor connector

91
Q
A

Removable Partial Prosthodontics (12 decks)

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