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Removable Partial Prosthodontics > Midterm Study Guide > Flashcards

Midterm Study Guide Flashcards

1
Q

What is the external finish line?

A

External junction of the framework to 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 (supra, infra, minor connector)

A

Infrabulge

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4
Q

Which of the following major connectors is not used in 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”

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9
Q

Proximal plate adjusted before rest seat. S curved survey line for retentive not reciprocal

A

BOTH true

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10
Q

Fabrication of RPD framework is done on what?

A

Master Cast

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11
Q

Which function of major connectors disperses lateral forces?

A

Cross arch stabilization

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12
Q

What RPD component transfers forces down the long axis?

A

Rest

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13
Q

Order of tooth modifications?

A

Guide planes, survey line adjustment, rest seat

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14
Q

Co-Cr used at UMKC. Co-Cr used more than Ni because of allergies.

A

BOTH true

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15
Q

Proximal 2/3 of reciprocal clasp in ______, terminal 1/3 of reciprocal clasp in _____

A

Middle, Middle

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16
Q

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

A

We want cast to be perpendicular to occlusal plane

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17
Q

Kennedy classification with no modifications

A

Class IV

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18
Q

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

A

Gingival 1/3

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19
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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20
Q

What is the pod?

A

Part of the I bar in that contacts the 0.01” undercut

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21
Q

What do you remove on an alternative/altered cast?

A

Distal extensions

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22
Q

What is drawn in red on a cast?

A

Undercuts

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23
Q

Where can you NOT put an I bar clasp

A

DF undercut (you CAN on MF and mid-F undercuts)

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24
Q

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 #19,22,23,24,25 missing. What classification is it?

A

Class III Mod 1

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26
Q

What classification is a bilateral distal extension?

A

Class I

27
Q

Borders for lingual bar 3-4 from the free gingival margin. This distance best measured on cast

A

True, False (measured in mouth)

28
Q

Axis of rotations determined from?

A

Line drawn through primary rests

29
Q

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,

30
Q

Tooth that supports prosthesis is called?

A

Abutment

31
Q

Least rigid major connector

A

Horseshoe (“U-shaped”)

32
Q

Which statement about principle of encirclement is FALSE

A

RPI doesn’t satisfy it (It DOES have encirclement)

33
Q

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

A

3-4 mm

34
Q

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

A

1.5-2 mm

35
Q

Which is not required for clasp assembly?

A

NONE (all are required: stability, retention, reciprocation)

36
Q

Best clasp choice for stress relief in tooth-tissue supported RPDs

A

RPI

37
Q

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

A

mandibular canine

38
Q

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

A

Presence of tori

39
Q

Which is not acceptable dental terminology?

A

flipper

40
Q

In Applegate, the most _____ edentulous area ______ determines classification.

A

Posterior, always

41
Q

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

A

True, false

42
Q

RPI clasp is what type of lever

A

Class II

43
Q

When is lingual plate major connector NOT indicated?

A

Anterior crowding

44
Q

What connects major connector to other pieces of the framework?

A

minor connector

45
Q

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

A

true, true

46
Q

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

A

reciprocal clasp

47
Q

You would use the altered cast technique on Class I and III RPD designs

A

False (only for class I and II)

48
Q

Which of the following is true concerning guiding planes?

A

-As wide as ½ the distance between cusp tips
-1/3 the bucco-lingual width of the tooth
-Can be extended further than ½ the mesial-distal width in some cases
All of the above**

49
Q

Which of the following RPD components do NOT provide retention?

A

Rests

49
Q

Which of the following RPD components contribute to support?

A

All of the above (rest, major connector, denture base)

50
Q

Which term is defined as “Resistance to horizontal, lateral, or torsional forces”

A

Stability

51
Q

Which of the following statements are true

A

RPD’s true reciprocation can only be achieved if the reciprocating element touches the tooth at the same time or before the retentive clasp

52
Q

Which of the most detrimental lever class

A

Class I

53
Q

Which of the following is true?

A

ALL OF THE BELOW
a. The completed RPD must be passive
b. Should not exert forces on the teeth or soft tissue
c. The tip of each retentive clasp should lie passively in a measured undercut
d. A and B are correct

54
Q

Given an image of the mandible. What is this Kennedy’s Classification

A

Class 2 mod 2

55
Q

A surveyed crown are indicated when

A

ALL THE BELOW
a. The survey line is in the gingival 1/3
b. No undercuts exists on abutment teeth
c. With the help of enameloplasty, one cannot have the changes necessary for
the abutment teeth without cutting into dentin

56
Q

Maximum tilt when surveying

A

10 degrees

57
Q

Tooth contouring (i.e. survey lines) should be done_______ the survey crown is made

A

Before

58
Q

What component of the RPD joins the minor connector and their attached assemblies together to form a solid unit

A

Major Connector

59
Q

The primary reason for beading of the maxillary cast is

A

Prevents ingress of air

60
Q

Primary purpose of direct retainer

A

Retention

61
Q

example of infrabulge

A

I bar

62
Q

The most common clasp used for a Tooth-supported RPD is

A

Circumferential

63
Q

Which clasp is located in the middle 1/3 of the tooth and does not taper

A

Reciprocal

Removable Partial Prosthodontics (2 decks)

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