RPD

Question 1

There can be one or more primary fulcrum lines, after fitting insertion of the denture none of these becomes a real axis of rotation, no driving torque moment arises. The class according to Fábián and Fejerdy classification of partial edentulousness is:
A. 1A 
B. 1B 
C. 2A 
D. 2B 
E. 3

Answer 1

A

Question 2

There can be one or more primary fulcrum lines and after insertion of the prosthesis one of them can become a real axis of rotation; the driving moment of torque is small so the sinking of the dentally supported denture’s sinking can be compensated for. The class according to Fábián and Fejérdy classification of the partial edentulousness is:
A. 1A 
B. 1B 
C. 2A 
D. 2B 
E. 3

Answer 2

B

Question 3

There can be only one fulcrum line and after insertion of the prosthesis this can be a real axis of rotation; The denture rotating around this axis sinks in one direction. The class according to Fábián and Fejérdy classification of partial edentulousness is:
A. 1A 
B. 1B 
C. 2A 
D. 2B 
E. 3

Answer 3

C

Question 4

There can be only one fulcrum line, which will be a real axis of rotation after inserting the denture; the denture rotating around this axis sinks in one direction. The number of the residual teeth is a maximum of two. The class according to Fábián and Fejérdy classification of partial edentulousness is:
A. 1A 
B. 1B 
C. 2A 
D. 2A/1 
E. 2B

Answer 4

D

Question 5

There can be two or more fulcrum lines and after insertion of the prosthesis one of them can become a real axis of rotation; The denture rotating around this axis sinks into one direction. The class after Fábiánaccording to Fábián and Fejérdy classification of partial edentulousness is:
A. 1A 
B. 1B 
C. 2A 
D. 2B 
E. 3

Answer 5

D

Question 6

There can be one or more fulcrum lines and after insertion of the prosthesis one or more of them can be a real axis of rotation; the denture rotating around them can sink in two directions. The class after Fábiánaccording to Fábián and Fejérdy classification of partial edentulousness is:
A. 1A 
B. 1B 
C. 2A 
D. 2B 
E. 3

Answer 6

E

Question 7

A: The full metal veneer crowns
B: The partial metal crowns
C: Both of them
D: None of then
FPR-270 The length of its marginal seal is longer than the other’s.
FPR-271 It has to cover the whole prepared surface.
FPR-272 The preparation margin has be a shoulder.
FPR-273 It cannot be made onto a filled tooth.
FPR-274 It covers the clinical crown of the prepared tooth.

Answer 7

270 - B
271 - C
272 - D
273 - D
274 - A

Question 8

A: MOD metal inlay
B: metal full veneer crowns
C: Both of these
D: None of them
FPR-275 The overlaying surface – borderline ratio is not advantageous.
FPR-276 It can be made of a metal with low casting viscosity .
FPR-277 The overlaying surface-borderline ratio is advantageous.
FPR-278 It replaces the approximal shape and contour of the tooth
FPR-279 It reconstructs the occlusal surface of the tooth.
FPR-280 Its material is harder than the dental enamel.
FPR-281 Elastic tension of the fixation is based on elastic tension

Answer 8

275 - A
276 - C
277 - B
278 - C
279 - C
280 - D
281 - D

Question 9

FPR-168. Only the open slide-attachments permit the vertical movement of the denture
consequently they provide rigid anchorage.

Answer 9

A

Question 10

FPR-169. The dento-mucosal support is more advantageous than the dental, because
the saddle can be reduced more.

Answer 10

E

Question 11

FPR-170. The indirect tilt inhibitors are also called indirect retainers, because they stabilize the denture against force that would remove it from its base.

Answer 11

B

Question 12

FPR-171 Reduction of the removable partial denture’s connector depends only on the rigidity of the denture base, because the remaining teeth bear the load.

Answer 12

A

Question 13

FPR-174 It is not the physiologic task of the mucoperiosteum to bear the load resulting from the mastication, that is why if it is possible the removable partial denture has also to be dentally supported.

Answer 13

A

Question 14

FPR-178 . In the class 1B of the Fabian and Fejerdy classification only fixed prosthetic appliances can be made, because in this class for the replacement of one canine with a fixed appliance an extended bridgework should be made.

Answer 14

D

Question 15

FPR-181. In order to protect the remaining teeth from overload, the denture has to be made, so that it transmits the masticatory load evenly on the mucoperiosteum, because the remaining teeth have a decreased load bearing capacity due to the denture.

Answer 15

E

Question 16

FPR-183 . During the altered cast technique the clasp-system can be cast together with the metal-base, that is why the clasps are the direct retainers.

Answer 16

B

Question 17

FPR-184 . The only task of the connector of the dental supported removable partial denture is to connect the saddles, therefore the dental supported partial denture can be skeleted.

Answer 17

A

Question 18

FPR-187 . The metal denture base made by the altered cast technique can only be made with an alginate- impression, because the metal denture base is cast immediately on the master-cast.

Answer 18

E

Question 19

FPR-188 . The bar adequately stabilizes the denture against lateral movements, that is why the bar retained removable partial denture is considered as an advantageous solution for the 2A class according to Fabian and Fejerdy classification.

Answer 19

C

Question 20

FPR-189 The canines and first molars are always first class abutments; consequently these teeth can alone anchor a cantilever bridge.

Answer 20

E

Question 21

FPR-191 The fixed partial denture has more aesthetic effects than the removable partial denture, because the porcelain can be modified more individually than the prefabricated artificial teeth.

Answer 21

D

Question 22

FPR-192 The wrought wire clasps are made of elastic wires with round or half- round cross section by bending, consequently these clasps belong to the group of elastic stress breakers.

Answer 22

C

Question 23

FPR-193 The Bonyhard - clasp provides rigid anchorage, because during its use, the force on the denture loads the abutment teeth with the same intensity.

Answer 23

E

Question 24

FPR-195 The saddle-far occlusal rest can act as a tilt inhibitor/indirect retainer, because it can increase the effectiveness of the clasp by preventing rotation.

Answer 24

E

Question 25

FPR-196 The anchorage of the denture - based on its mechanism - can be rigid or non rigid, that is why the anchorage is against the resistance of oral structures and vertical and horizontal displacing effect of mastication.

Answer 25

C

Question 26

FPR-197 The support of the denture can be dental, mucosal, mucodental and dentomucosal, because the parts of denture have to create a functional unit with the oral anatomic features and

Answer 26

B

Question 27

FPR-199 The fit of the cast metal framework is checked on the master model, because the working cast is damaged during the casting procedures.

Answer 27

A

Question 28

FPR-200. The wax-up of the metal denture base, is made on the investing material, because the working cast is used to check how the metal framework fits.

Answer 28

E

Question 29

FPR-204 . The cast clasps are made from prefabricated clasp parts, therefore only the parts of a cast clasp can clearly be distinguished .

Answer 29

B

Question 30

FPR-205 . The tilt inhibitors are also called as indirect retainers, because they don’t directly stabilize the denture against pull type of forces.

Answer 30

A

Question 31

FPR-208 . The biggest convexity of the tooth can only be determined with a surveyor, because the prosthetic equator is not the same as the anatomic one.

Answer 31

D

Question 32

FPR-215 . An acrylic crown, made on a post-and-core is recommended only as a temporary appliance, because after the abrasion of the acrylic the metal surface
becomes free and will transmit damaging force to the root.

Answer 32

C

Question 33

FPR-216 . The post-and-core with back plate has to be fixed permanently with zinc-oxyde-eugenol cement to the root because after the facet is being damaged, the
crown cannot be changed separately, it can only be repaired.

Answer 33

D

Question 34

FPR-219 . The larger the vestibular arch of the pontic, the bigger is the
load on the abutments, therefore the pontic should connect the abutments in a straight
line.

Answer 34

C

Question 35

FPR-221 . The margin of the temporary crown made on a shoulder-prepared tooth has to be made as thin as a knife edge, because the temporary crown may never touch
the marginal gingiva.

Answer 35

E