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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 and 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 RPD’s?

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

The proximal plate adjusted before rest seat. S-curved survey line, is for retentive, NOT reciprocal:

T/F

A

Both statements are true

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10
Q

Fabrication of RPD framework is performed on:

A

Master cast

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11
Q

Which function of major connector disperses lateral forces?

A

Cross-arch stabilization

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12
Q

Which function of major connectors disperses lateral forces?

A

Cross arch stabilization

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13
Q

What RPD component transfers forces down the long axis?

A

Rest

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14
Q

Order of tooth modifications:

A
  1. guide planes
  2. survey line adjustment
  3. rest seat
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15
Q

(True/False)

Co-Cr is used at UMKC. Co-Cr is more commonly used die to nickel sensitivity/

A

Both statements true

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16
Q

Proximal 2/3 of reciprocal clasps in ______.

Terminal 1/3 of reciprocal clasp in ______.

A

middle; middle

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17
Q

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

A

Want cast to be perpendicular to occlusal plane

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18
Q

Kennedy classification with no modifications:

A

Class IV

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19
Q

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

A

gingival 1/3

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20
Q

What does NOT apply to guiding planes?

A

never use an occlusal rest on a mesially tilted mandibular molars for rest seats

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21
Q

What is the pod?

A

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

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22
Q

What do you remove on alternative/altered cast?

A

distal extensions

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23
Q

What is drawn in red on the cast?

A

Undercuts

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24
Q

Where can you NOT put an I-bar cast?

A

DF undercut

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25
Q

(True/False):
As the length of the guiding plane increases, frictional retention is increased. When length is increased, resistance to rotation is increased.

A

Both statements true

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26
Q

You have a #19, #22, #23, #24, and #35 missing, what classification?

A

Kennedy class III mod 1

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27
Q

What is the classification for B/L distal extension?

A

Class I

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28
Q

The 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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29
Q

Axis of rotations are determined by:

A

Position of primary rests

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30
Q

True/False): 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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31
Q

Tooth that supports prosthesis is called:

A

Abutment

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32
Q

Least rigid major connector:

A

Horsehoe (U-shaped)

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33
Q

Which statement about the principle of encirclement is false?

A

RPI does satisfy it

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34
Q

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

A

3-4 mm

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35
Q

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

A

1.5 mm

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36
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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37
Q

The best clasp choice for stress relief in tooth-tissue supported RPDs:

A

RPI

38
Q

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

A

Mandibular canine; due to thinner enamel

39
Q

A patient presents with all maxillary teeth. Which doe not contribute to Kennedy classification?

A

Presence of Tori

40
Q

Which of the following g is not acceptable terminology?

A

Flipper

41
Q

In applegate, the most _____ edentulous area ______ determines classification

A

posterior; always

42
Q

(True/False):
Tilting the cast changes the HOC. You use the tip of a carbon marker to mark the HOC.

A

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

43
Q

RPI clasp is what type of lever?

A

Class II

44
Q

When is a lingual plate major connector NOT indicated?

A

anterior crowding

45
Q

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

A

Minor connector

46
Q

(True/False):
Looking from the occlusal, it is idea to preserve the round structure of the tooth. The rest should be 1/2 distance between tips.

A

True; True

47
Q

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

A

Reciprocal clasp

48
Q

(True/False):
You should use the altered cast technique on Class I and III RPD designs

A

False- should be Class I and II

49
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 mesial-distal width in some cases
d) all of the above

A

d) All of the above

50
Q

(True/False):

You should use an altered cast technique on Class I and III:

A

False

51
Q

what is the rigid component preventing gingival movement down?

A

Rest (NOT the rest seat)

52
Q

Which is entirely above the height of contour tour?

A

Reciprocal arm

53
Q

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

A

above; above

54
Q

What Kennedy class does not have modifications?

A

Class IV

55
Q

Which would not be included in a classification/modification?

A

Torus

56
Q

You make the final metal RPD component on:

A

Master cast

57
Q

You want the path of insertion to be:

A

Perpendicular to the occlusal plane

58
Q

(True/False):
A class II RPD does not have rotational forces across midline structure

A

False

59
Q

A lingual plate cannot be used when:

A

anterior crowding

60
Q

(True/False): the retentive heigh of contour should have an S-shape

A

True

61
Q

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

A

Circumferential clasp

62
Q

What is the width of the anterior-posterior strap

A

6-8 mm

63
Q

What teeth & why would you add composite for a cingulum rest?

A

Mandibular canine; bc not enough enamel

64
Q

What is the needed reduction over the marginal ridge of a rest seat?

A

1-1.5 mm

65
Q

What undercut is needed for a circumferential clasp?

A

.01 inches

66
Q

What joins the denture base to other components of the RPD?

A

Minor connector

67
Q

What type of lever is an RPI?

A

Class II

68
Q

List the order of surveying a cast:

A
  1. guide planes
  2. re-survery
  3. rest seats
69
Q

What word do we not call 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 type of major connector used on the maxillary arch?

A

Lingual bar

72
Q

what is the disadvantage to a horseshoe (U-shaped) major connector?

A

NOT rigid

73
Q

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

A

Distal edentulous areas

74
Q

In the RPI, the I-bar moves ____ when the patient bite down on the distal extension part

A

down & mesial

75
Q

The “pod” refers 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 BL length, 1/2 width cusp tip to cusp tip, its okay to extend more than 1/2 the length MD)

77
Q

RPI acts a s _______ lever

A

Class II

78
Q

(True/False): When looking from the occlusion, it is ideal to preserve the round structure of the tooth, and the guide plane should be 1/2 width from cusp tip to cusp tip

A

True; True

79
Q

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

A

1.5-2 mm

80
Q

In a tooth-supported RPD, what is the length of a 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 & 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

Kennedy 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

Minor connector

90
Q
A

Removable Partial Prosthodontics (12 decks)

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