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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
You have a #19, #22, #23, #24, and #25 missing, what classification?
Kennedy class III mod 1
26
What is the classification for a B/L distal extension?
Class I
27
T/F: Borders for lingual bar 3-4 from the free gingival margin. The distance best measured on the cast.
True; False- distance should be measured in the mouth
28
Axis of rotations are determined by:
positions of primary rests
29
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:
False- There is functional movement and axis of rotation
30
The tooth that supports prosthesis is called:
abutment
31
Least rigid major connector:
horseshoe (U-shaped)
32
Which statement about the principle of encirclement is false?
RPI doesn't satisfy it
33
"long" guiding planes length (tooth-supported RPD)
3-4 mm
34
"short" guiding planes length (tooth-tissue supported RPD)
1.5 mm
35
Which of the following is NOT required for clasp assembly? - stability - reciprocation - retention
None of them- all of them are required
36
The best clasp choice for stress receive in tooth-tissue supported RPDs?
RPI
37
What tooth do we use a composite cingulum rest and why?
mandibular canine due to thiner enamel
38
A patient present with all maxillary teeth. Which does not contribute to Kennedy classification?
presence of tori
39
Which of the following is not acceptable terminology?
flipper
40
In applegate, the most ___ edentulous area ____ determines the calssificaiton
posterior; always
41
T/F: Tilting the cast changes the HOC. You use the tip of the carbon marker to mark the HOC.
True; false- should use the side of the carbon marker
42
RPI clasp is what type of lever?
Class II
43
When is a lingual plate major connector NOT indicated?
anterior crowding
44
What connects the major connector to other pieces of the framework?
minor connector
45
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.
Both true
46
What component of the framework is RIGID and lies above the survey line?
reciprocal clasp
47
T/F: You would use the altered cast technique on class I and III RPD designs:
False- should be class I and II
48
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
D- all of the above
49
You should use altered cast technique on class I and III:
false
50
What is the RIGID component preventing gingival movement DOWN:
Rest (not rest seat)
51
Which is entirely above the height of contour:
reciprocal arm
52
The reciprocal arm is ____ middle 1/3 and ____ gingival 1/3
above; above
53
What Kennedy class does NOT have modifications?
Class IV
54
Which would not be included in classification/modification?
Torus
55
You make the final metal RPD component on:
master cast
56
You want the path of insertion to be:
perpendicular to the occlusal plane
57
A class II RPD does not have rotation forces across midline suture:
false
58
A lingual plate can't be used when there is:
anterior crowding
59
The retentive height of contour should have S-shape:
true
60
If you have tissue undercuts, what clasp type should be used?
circumferential
61
The width of the anterior-posterior palatal strap:
6-8 mm
62
What teeth and why do you add composite on for a cingulum rest?
Mandibular canine because not enough enamel
63
Reduction needed over the marginal ridge of a rest seat:
1.0-1.5 mm
64
What undercut is needed for circumferential clasp?
0.01 inches
65
What joins the denture base with another thing?
minor connector
66
What type of lever is an RPI?
Class II
67
68
List the order of surveying a cast:
1. guiding planes 2. re-survey 3. rest seats
69
What word do we not called a partial removable denture?
flipper
70
In class III RPDs, what type of major connector is used?
palatal strap
71
What is not a major connector in the maxillary?
lingual bar
72
What is the disadvantage of a horseshoe (u-shaped) major connector?
Not rigid
73
In the adjusted cast design, which of the following is removed from the original master cast?
Distal edentulous areas
74
In an RPI design, the I bar moves ___ when a patient bites down on the distal extension part:
down and mesial
75
The "pod" referes to:
I-bar engaging 0.01" undercut
76
All of the following are true about rests except:
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
RPI acts as a ____ lever
class II
78
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?
Both true
79
In a tooth-tissue supported RPD, what is the length of the guide plane?
1.5-2.0 mm
80
In a tooth supported RPD, what is the length of the guide plane?
3-4 mm
81
Which is marked in red during diagnostic cast design?
Retentive undercut
82
bracing elements on one side of the arch, providing stability on the other side:
Cross-arch stabilization (counter leverage)
83
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:
minor connector
84
Do rests provide retention?
NO- they transfer forces down the long axis of the abutment tooth
85
What is the main retention of the prosthesis?
direct retainers
86
Prevents vertical displacement of the distal extension denture base:
Indirect retainers
87
Indirect retainers are ALWAYS necessary in:
Ken Class I and II
88
Indirect retainers should be located:
perpendicular to the fulcrum line, as far away as possible
89
Prevents the movement of the RPD towards the tissues:
indirect retainers
90
The proximal plate of the RPD is considered:
A minor connector
91

Removable Partial Prosthodontics (12 decks)

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