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Removable Partial Pros: Midterm Practice Exam > Practice Test > Flashcards

Practice Test Flashcards

1
Q

If a patient has one side of their arch supported by the residual ridge and the other supported by natural dentition, what classification are they?

A

Unilateral tooth-tissue supported RPD

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2
Q

If a patient is missing her 4 maxillary incisors and has a severely resorbed edentulous ridge, what would you recommend for a treatment plan?

A

Removable Partial Denture

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3
Q

The reciprocating arm of a supra-bulge clasp is located

A

In the middle 1/3

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4
Q

When surveying a cast, the maximum tilt that is acceptable is

A

10 degrees

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5
Q

A component of a RPD that serves to transfer forces occurring against the prosthesis down the long axis of the abutment tooth and prevent tissue-ward movement of the RPD is

A

Rest

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6
Q

Which of the following is false concerning Indirect Retainers

A

Most commonly in the form of a MO rest on a 1st molar

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7
Q

The purpose of tripoding the cast is to

A

Record the cast position to the surveyor

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8
Q

Path of insertion is determined by all of the following EXCEPT::

Guiding planes
Retentive Undercuts
Occlusion
Interferences
Esthetics
A

Occlusion

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9
Q

A surveyed crown are indicated when

  • The survey line is in the gingival 1/3
  • No undercuts exists on abutment teeth
  • With the help of enameloplasty, one cannot have the changes necessary for the abutment teeth without cutting into dentin
  • All of the above are true
A

-All of the above are true

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10
Q

The amount of undercut varies depending on the clasp type. How many inches of undercut is used for a Cr-Co or Ni-Cr cast clasp is

A

0.01 “

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11
Q

The order of performing tooth modifications within the mouth are

A

Guide planes, Survey line reposition, Rest

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12
Q

You should decide what type of clasp to use after

A

Surveying the cast

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13
Q

Vertically parallel surfaces of abutment teeth oriented to contribute to the direction of the path of insertion and dislodgment of a RPD during insertion and removal is called

A

Guiding planes

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14
Q

The terminal 1/3 of a retentive clasp arm in a tooth-tissue borne RPD should be located

A

Gingival 1/3

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15
Q

Picture of a maxillary arch: The patient is missing tooth #12, 13, 14, 15 but has retained tooth #16. What is the classification?

A

Class 3

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16
Q

Which of the following is true concerning Kennedy’s classification?

Edentulous areas other than those that determine the classification are referred to as modifications and are designated by their number

The extent of the modification is not considered, only the number of additional edentulous areas is considered

Both of the above are true

A

Both of the above are true

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17
Q

Which Kennedy’s classification is it not possible to have modification areas?

A

class 4

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18
Q

Which of the following is true concerning guiding planes

As wide as the widest portion of the occlusal rest
1/3 the bucco-lingual width of the tooth
1/2 the distance between the cusp tips
All of the following are true

A

All of the above

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19
Q

The length of guiding planes in a tooth-tissue supported abutments should be

A

1.5-2.0 mm

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20
Q

The length of guiding planes in a tooth supported abutments should be

A

3-4 mm

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21
Q

Borders for a maxillary major connectors should be placed ________ mm from the gingival margin

A

6 mm

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22
Q

The primary purpose of a posterior palatal seal for the maxillary major connectors is to

A

Prevent the ingress of air and food underneath the denture

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23
Q

Which of the components of a RPD are not rigid

A

(A AND B ARE RIGHT)
Approaching arm of I-bar

Terminal 1/3 of the retentive arm

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24
Q

A facebow transfer of a diagnostic cast for planning an RPD helps with:
`

A

(A AND B ARE RIGHT)

More accurate arc of closure
More accurate occlusion

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25
Q

Which clasp is indicated when the patient is concerned about esthetics?

A

I-Bar

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26
Q

Why choose cingulum rest over incisal edge

A

Less leverage on the tooth

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27
Q

The amount of space needed from the floor of the mouth to the free gingival margin for a lingual bar is

A

7-9 mm

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28
Q

A lingual plate is indicated for all of the following EXCEPT?

A

Severely anterior crowding

`

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29
Q

The ____________ component of an RPD joins the major connector to the clasp assembly and indirect retainers

A

Minor Connector

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30
Q

In a suprabulge clasp type, the retentive arm approaches the undercut from

A

Above the survey line

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31
Q

The first choice of clasp for a distal-extension RPD is

A

RPI

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32
Q

Examples of Tooth-tissue supported RPDs are

A

(A AND B ARE RIGHT)

Class 1
Class 2

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33
Q

The most common cause of rest fracture is due to

A

Inadequate rest seat reduction

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34
Q

The primary function of an occlusal rest is to

A

Direct forces down the long axis of the tooth

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35
Q

The primary-design quality of the occlusal rest would categorize it as a + rest seat is

A

Forms an acute angle with the minor connectors that connect them to the major connectors

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36
Q

Which teeth can be prepared with a lingual rest seat (does not require the addition of composite)?

A

Maxillary canine

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37
Q

The altered cast procedure is used to

A

Ensure support for the RPD

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38
Q

The altered cast procedures requires all of the following EXCEPT

A

Placement of pressure on the distal extension

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39
Q

If a patient has numerous teeth with harmonious occlusion, casts can be mounted

A

In MIP

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40
Q

All of the following are the disadvantages of the bar (infra-bulge) clasp EXCEPT one. Which is the exception?

A

Less Flexible

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41
Q

The only major connector that should not be used in the maxillary arch is

A

Lingual bar

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42
Q

The major connector most commonly used for class III RPDs

A

Palatal strap

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43
Q

The width of the straps used in A-P

A

6-8 mm

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44
Q

Depth of marginal ridge in rest seat

A

1- 1.5 mm

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45
Q

Proximal plate needs to be adjusted before rest seat. You want the S curved survey line in the retentive arm, not the reciprocal arm

A

both true

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46
Q

Fabrication of RPD framework

A

Master cast

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47
Q

Lateral forces are what function

A

Cross arch stabilization

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48
Q

t/f: Rests transfer forces down long axis

A

true

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49
Q

Order of reduction

A

Guide planes, survey line adjustment, rest seats

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50
Q

You want guide planes to wrap around to lingual in RPI. There should be sluiceway through the facial in RPI on the mesial rest

A

true then false

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51
Q

Cast circumferential undercut

A

0.01 “

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52
Q

Co-Cr is used in UMKC clinic. Co-Cr used more than Ni-Cr because of nickel allergy

A

true

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53
Q

t/f: Reciprocal clasp is rigid and above the survey line

A

true

54
Q

The proximal 2/3 of reciprocal is in the ___ and the terminal 1/3 of the reciprocal is in the ___

A

middle

middle

55
Q

Don’t want excessive tilt to the cast –why

A

You want the cast to be perpendicular to the occlusal plane

56
Q

Kennedy classification with no mods

A

Class IV

57
Q

Terminal 1/3 of retentive clasp is in the

A

Gingival 1/3

58
Q

Which one does not apply to guiding planes

A

NEVER use mesially tilted mandibular molars for rest seat

59
Q

Alternative cast method you remove

A

The distal extensions

60
Q

Which of the following is drawn in red

A

undercut

61
Q

For an I bar, you cannot use which of the following in a distal extension case

A

DF

62
Q

Width of guiding plane in tooth-tissue

A

1.5-2 mm

63
Q

Width of guiding plane in tooth-tooth

A

3-4 mm

64
Q

The pod of the I bar in a 0.01” undercut

A

The 2mm area that touches the undercut

65
Q

As length of the guiding plane is increased, frictional retention increases. As the length increases, resistance retention increases

A

true

true

66
Q

You have 19, 22, 23, 24, 25 missing – what is kennedy classification

A

Class III mod 1

67
Q

Bilateral distal extension is what classification

A

Class I

68
Q

Borders for lingual plate should be 3-4 from the gingival margin. Depth of floor of mouth is best determined by the cast

A

true then false

69
Q

When do we not use the lingual plate

A

Severe anterior crowding

70
Q

Which of the following are required for clasp assembly

A

Support, resistance, retention

71
Q

Which major connector is the least rigid

A

Horseshoe

72
Q

Which tooth is the composite cingulum rest seat placed on

A

Mandibular canine due to thinner enamel

73
Q

What is the most common stress relief in distal extension cases

A

RPI

74
Q

Pt with all maxillary teeth, which will not contribute to Kennedy classification

A

tori

75
Q

Which of the following isn’t true about the principle of encirclement

A

The RPI doesn’t satisfy it

76
Q

In CR, the condyle contacts the thinner, ___ part of the disc and is in the most ____ position

A

Avascular, anterior superior

77
Q

The retentive arm is on the buccal of the maxillary teeth. This is due to the curve of spee

A

true, false

78
Q

When viewed from the facial, when pt bites down on the distal extension area, what direction does the RPI move

A

Downward and mesially

79
Q

What is not dental terminology

A

flipper

80
Q

In Applegate’s rules, the most __ edentulous area ___ determines classification

A

posterior always

81
Q

t/f: It is more desirable to keep the rounded contour from the occlusal

A

true

82
Q

Tilting the cast changes the HOC. You use the tip of the carbon marker to mark the survey line

A

true, false

83
Q

RPI clasp is what type of lever

A

class II

84
Q
  1. External finish line?
A

a. Framework to denture base

85
Q
  1. When biting down I bar moves (mesial, down, up)
A

a. Mesial and down

86
Q

tissue undercut can prevent selection of (supra, infra, minor connector)

A

a. Infra bulge

87
Q
  1. Only major connector not used in maxillary arch
A

a. Lingual bar

88
Q
  1. Most commonly used for class 3 RPD
A

a. Palatal strap

89
Q
  1. Width of straps used in AP
A

a. 6-8 mm

90
Q
  1. Depth of marginal ridge in rest seat
A

a. 1-1.5

91
Q
  1. Undercut for a chromium thing
A

a. 0.01 inches

92
Q
  1. Proximal plate adjusted before rest seat. S curved survey line for retentive not reciprocal
A

a. True, true

93
Q
  1. Fabrication of RPD framework
A

a. Master cast

94
Q
  1. Lateral forces
A

a. Cross arch stabilization

95
Q
  1. Transfer forces down long axis
A

a. Rest

96
Q
  1. Order of reduction
A

a. Guide planes, survey line adjustment, rest seat

97
Q
  1. Co-Cr used at UMKC. Co-Cr used more than Ni because of allergies
A

a. True, true

98
Q
  1. Proximal 2/3 of reciprocal in ______, terminal 1/3 of reciprocal in ______
A

a. Middle, middle

99
Q
  1. Don’t want excessive tilt to the cast
A

a. Want cast to be perpendicular to occlusal plane

100
Q
  1. Kennedy classification with no modifications
A

a. 4

101
Q
  1. Terminal 1/3 of retentive clasps
A

a. Gingival 1/3

102
Q
  1. Does NOT apply to guiding planes
A

a. Never use mesially tilted mandibular molars for rest seats

103
Q
  1. Alternative cast what do you remove
A

a. Distal extensions

104
Q
  1. What do you use for alternative cast method
A

a. 1 and 2

105
Q
  1. What’s in red
A

a. Undercut

106
Q
  1. Where can you not put I bar
A

a. DF

107
Q
  1. As length of guiding plane increases ________
A

frictional retention and resistance increases

108
Q
  1. You have 19,22,23,24,25 missing. What classification is it?
A

a. Kennedy class 3 mod 1

109
Q
  1. Bilateral distal extension
A

a. Class 1

110
Q
  1. Borders for lingual bar 3-4 from GM. Distance best measured on cast
A

a. True, false

111
Q
  1. Axis of rotations measured from
A

a. Rest

112
Q
  1. Kennedy class 2 there is no axis of rotation something about median suture in max
A

a. False

113
Q
  1. Tooth that supports prosthesis
A

a. Abutment

114
Q
  1. Least rigid connector
A

a. Horseshoe

115
Q
  1. Isn’t true about principle of encirclement
A

a. RPI doesn’t satisfy it

116
Q
  1. “long” guiding planes
A

a. 3-4 mm

117
Q
  1. “short” guiding planes`
A

a. 1.5 mm

118
Q
  1. Required for clasp assembly
A

a. Stability, reciprocation, retention

119
Q
  1. Best clasp choice for stress relief
A

a. RPI

120
Q
  1. Composite cingulum
A

a. Mandibular canine due to thinner enamel

121
Q
  1. Pt with all maxillary teeth, not contribute to kennedy
A

a. Torus

122
Q
  1. Not dental terminology
A

a. Flipper

123
Q
  1. In applegate, most _____ edentulous area ______ determines classification
A

a. Posterior, always

124
Q
  1. Tilting the cast changes the HOC. You use the tip of carbon marker
A

a. True, false

125
Q
  1. RPI clasp is what type of lever
A

a. Class 2

126
Q
  1. The order of performing tooth modification within the mouth are
A

a. Guide planes, survey line reposition, rest

127
Q
  1. When is lingual plate NOT indicated?
A

a. Anterior crowding

128
Q
  1. Connects major connector to other pieces
A

a. Minor connector

129
Q
  1. You want to keep occlusal contour original rounded. Rest should be ½ distance between cusp tips
A

true true

130
Q

You use altered cast technique on class I and III

A

• FALSE

Removable Partial Pros: Midterm Practice Exam (1 decks)

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