NBDE II Prosthodontics: Fixed Prosthodontics UPDATED
ACTUAL Questions and CORRECT Answers
Which of the following determines the long axis of the preparations
parallelism of abutment preparations for a
fixed partial denture (FPD)? long axis of the abutments should be parallel to each other in
order to achieve the same path of insertion
Degree of convergence
Angulation of finish lines
Amount of chamfer
Long axis of the preparations
posterior PFM crown reduction guide occlusal: functional cusp (2-2.5mm), non-functional cusp
(1.5mm), central fossa (1.5mm)
axial: 1.5mm
margin: 1mm
anterior PFM crown reduction guide incisal: 2mm
axial: 1-1.2mm
facial: 1.5mm
lingual: 1-1.5mm
, Which is the minimum amount of occlusal 1.5mm
clearance necessary for a non-functional
cusp of a posterior PFM (porcelain fused to
metal) crown?
2.5mm
2.0mm
1.5mm
1.0mm
0.5mm
The most important reason zinc oxide decreased potential to irritate the pulp.
eugenol cements are better than zinc
phosphate cements for crown delivery is eugenol has sedative effects
because zinc oxide cements demonstrate
All answers are correct
decreased film thickness.
decreased solubility in saliva.
decreased potential to irritate the pulp.
non-rigid connector key and keyway-- for pontics and short span bridges where
you can't get proper draw without a lot of tooth reduction
non-rigid connector line of draw line of draw is parallel to the path of the placement of distal
retainer (female)
The path of insertion of the key into the The retainer NOT carrying the keyway
keyway should be parallel to the path of
insertion of which of the following objects
when using a non-rigid connector for a fixed
partial denture?
The retainer NOT carrying the keyway
The retainer carrying the keyway
Neither retainer
Both retainers
Ante's law the root surface area of the abutment teeth (embedded in
bone) should equal or surpass that of the teeth being
replaced with pontics
ACTUAL Questions and CORRECT Answers
Which of the following determines the long axis of the preparations
parallelism of abutment preparations for a
fixed partial denture (FPD)? long axis of the abutments should be parallel to each other in
order to achieve the same path of insertion
Degree of convergence
Angulation of finish lines
Amount of chamfer
Long axis of the preparations
posterior PFM crown reduction guide occlusal: functional cusp (2-2.5mm), non-functional cusp
(1.5mm), central fossa (1.5mm)
axial: 1.5mm
margin: 1mm
anterior PFM crown reduction guide incisal: 2mm
axial: 1-1.2mm
facial: 1.5mm
lingual: 1-1.5mm
, Which is the minimum amount of occlusal 1.5mm
clearance necessary for a non-functional
cusp of a posterior PFM (porcelain fused to
metal) crown?
2.5mm
2.0mm
1.5mm
1.0mm
0.5mm
The most important reason zinc oxide decreased potential to irritate the pulp.
eugenol cements are better than zinc
phosphate cements for crown delivery is eugenol has sedative effects
because zinc oxide cements demonstrate
All answers are correct
decreased film thickness.
decreased solubility in saliva.
decreased potential to irritate the pulp.
non-rigid connector key and keyway-- for pontics and short span bridges where
you can't get proper draw without a lot of tooth reduction
non-rigid connector line of draw line of draw is parallel to the path of the placement of distal
retainer (female)
The path of insertion of the key into the The retainer NOT carrying the keyway
keyway should be parallel to the path of
insertion of which of the following objects
when using a non-rigid connector for a fixed
partial denture?
The retainer NOT carrying the keyway
The retainer carrying the keyway
Neither retainer
Both retainers
Ante's law the root surface area of the abutment teeth (embedded in
bone) should equal or surpass that of the teeth being
replaced with pontics
