removable midterm Flashcards
What is the proximal guide plane length of a Class III RPD?
3-4
What best describes the external finish line?
framework to denture base
When biting down on the I-bar, how does it move?
mesial and down
All of the following can be used with a tissue undercut, EXCEPT:
1/2 t bar
What is the most commonly used for a Class III RPD?
palatal strap
width of anterior-posterior palate
6-8 mm
What is the ideal depth of the marginal ridge in a rest seat?
1-1.5mm
The proximal plate is adjusted before the rest seat. S curved survey line is for retentive not reciprocal
both are true
Fabrication of the RPD framework is done on
master cast
Lateral forces →
cross-arch stabilization
These transfer the force down the long axis
rest-> this is the actual metal
[rest seat- > this is the prep on the tooth)
What is the proper order of reduction?
guide planes-> survey line -> rest seat
Co-Cr is the material primarily used at UMKC. Co-Cr is used more than Ni-Cr because it can cause
allergies in people.
both are true
Why don’t you want an excessive tilt to the cast?
want cast to be perpendicular to the occlusal plane
this kennedy classification has NO modifications
class IV
The proximal 2⁄3 of the retentive clasp is located in the _____, terminal 1⁄3 of the retentive is in the _______
middle
gingival
All of the following apply to guiding planes EXCEPT:
never use mesially tilted mandibular molars for the rest seats
What best describes the “Pod”?
0.01 undercut on the I-bar
When doing an Alternative cast, what should you do?
remove distal extension
T/F
class I and class III are used for the alternative cast RPD method
false
class I and class II are
what color do you draw the undercut
red
tissue undercut is black
where can you NOT put an I bar
DF undercut
as length of the guiding plane increases, the frictional retention increases. as well as the resistance increase
both are true
you have every tooth in the mouth but 19, 23, 24, 25, 26, 29. what kennedy classification
class III, mod II
what kennedy class is a bilateral distal extension
class I
The superior borders for the lingual bar are 6mm from the gingival margin. Distance is best measured on the cast.
both false
3 mm from margin for lingual bar
measured in mouth
The axis of rotations are measured from
position of the primary rest
. (T/F) In a Kennedy class II RPD, there is no axis of rotation because there is no functional movement across the median suture in the maxilla.
false
Which of the following is NOT true regarding the principle of encirclement?
RPI does not satisfy it
The “short” guiding planes have what measurement?
1.5mm
On which of the following teeth do we most often see a composite cingulum?
13
18
21
22
22 since mand canine
- What clasp is the best choice for stress-relief?
RPI
All of the following is required for the clasp assembly EXCEPT:
a. Stability
b. Support
c. Reciprocation
d. Encirclement of 90 degrees
d. Encirclement of 90 degrees -> has to be 180 degrees
Which of the following is inappropriate terminology?
flipper
In applegate, the most ______ edentulous area _____ determines the kennedy classification
posterior
always
Tilting the cast changes the HOC. You should do your survey lines after creating your rest seats.
first is true
second is false
RPI is what type of lever?
class II
- When is the lingual plate NOT indicated?
anterior crowding
You want to keep the occlusal contour originally rounded. The rest should be 1⁄2 the distance between cusp tips.
both true
Which of the following is NOT true concerning the guiding planes?
a. Can be as wide as 1⁄2 the distance between cusp tips
b. 1⁄3 the bucco-lingual width of the tooth
c. Can be extended further than 1⁄2 the mesial-distal width in some cases
d. Etc…
d. Etc… (don’t remember what the correct answer was, but the A-C is TRUE)
what is the undercut for a cast chromium clasp
0.01 inches (look at units)
A patient presents with all maxillary teeth. Which of the following does NOT contribute to the Kennedy classification?
a. Path of insertion
b. Possible TE in anterior teeth
c. Possible TE in posterior teeth
d. Tooth for RPD
path of insertion
What is the name for a tooth that supports the prosthesis called?
abutment
what is the least rigid major connector
horseshoe
which of the following major connectors is not used in the maxillary arch
lingual bar
