NBDE Part II – Prosthodontics Questions
and Answers A+ Guide
Cement for porcelain onlay HAS TO BE - correct answers✅✅RESIN
What parts of tooth prep can be managed by operator:
a) parallelism
b) surface area
c) length
d) circumference - correct answers✅✅a) parallelism
3/4 Gold crown advantageous EXCEPT for: - correct answers✅✅LESS
RETENTION than full crown
Resistance to lingual displacement of 3/4 crown?
a) Facial wall of groove
b) Lingual wall (of groove)
c) Facial aspect of prep - correct answers✅✅b) Lingual wall (of groove)
Patient has a veneer on incisal edge, small piece of porcelain chipped off and
wants you to fix the chip only, what is the sequence of events : - correct
answers✅✅1) microetch/micro abrasion
2) acid-etch
3) Silante (porcelain tx to help it stick to bonding agent)
4) bonding agent (MAS bonding)
Porcelain is stronger under what type of forces? - correct
answers✅✅COMPRESSSION Forces
,NBDE Part II – Prosthodontics Questions
and Answers A+ Guide
When you receive a crown back and want to seat it what is the first thing you
check for?
a) Shade (aesthetics) or internal
b) Proximal contacts
c) Margins - correct answers✅✅b) Proximal contacts
Most common complication of internal bleaching: - correct
answers✅✅Cervical/internal root resorption
also referred to as peripheral inflammatory root resorption. The presence of a
barrier (base material) between the root filling material and the internal
bleaching material should be ~4 mm to prevent this resorption.
Most successful teeth for bleaching? - correct answers✅✅aged yellow
staining
Bleach most often used in internal bleaching: - correct
answers✅✅Sodium perborate
A fixed partial denture keeps breaking, why? - correct answers✅✅Poor
framework
Most esthetic Pontic:
a) Saddle
b) Steins
,NBDE Part II – Prosthodontics Questions
and Answers A+ Guide
c) Sanitrary
d) Conical ridge lap
e) Modified ridge lap - correct answers✅✅e) Modified ridge lap
Patient had veneers cemented with light cured resin. Returns a few weeks
later with brown staining at gingival margins. Why? - correct
answers✅✅MICROLEAKAGE
How long after vital tooth bleaching can you bind resin to it?
a) 24 hours
b) 3 days
c) 1 week - correct answers✅✅c) 1 week
Modified ridge lap has what kind of contact? - correct answers✅✅Minimal
contact with residual ridge
How should the modified pontic touch the gum? - correct
answers✅✅barely touch it, rest gently/ should not blanch tissue
A pontic in the bridge shows the metal, why?
a) Under-reduction
b) Framework was not done well - correct answers✅✅b) Framework was
not done well
Which of the following is not ideal abutement-pontic connection?
, NBDE Part II – Prosthodontics Questions
and Answers A+ Guide
a) Central incisor-lateral incisor
b) Lateral incisor-central incisor
c) Canine-lateral incisor - correct answers✅✅b) Lateral incisor-central
incisor
worst cantilever is lateral abatement with central pontic
What system is best for soldering adjusted FPD framework? - correct
answers✅✅Oxygen torch soldering
Strength of Abutment connection to pontic, which is more important? -
correct answers✅✅Occluso-gingival width
How do you decrease the width of an artificial tooth?
a) Deepen the facial line angle proximally and increase interproximal
embrasure
b) Deepen the facial line angle proximally and decrease interproximal
embrasure
c) Take the facial line angle labially (closer together) and increase
interproximal embrasure
d) Take the facial line angle labially (closer together) and decrease
interproximal embrasure - correct answers✅✅c) Take the facial line angle
labially (closer together) and increase interproximal embrasure
What is the point of putting a dowel post on an RCT tooth? - correct
answers✅✅Retain core, metal set into root canal to provide support to
crown
and Answers A+ Guide
Cement for porcelain onlay HAS TO BE - correct answers✅✅RESIN
What parts of tooth prep can be managed by operator:
a) parallelism
b) surface area
c) length
d) circumference - correct answers✅✅a) parallelism
3/4 Gold crown advantageous EXCEPT for: - correct answers✅✅LESS
RETENTION than full crown
Resistance to lingual displacement of 3/4 crown?
a) Facial wall of groove
b) Lingual wall (of groove)
c) Facial aspect of prep - correct answers✅✅b) Lingual wall (of groove)
Patient has a veneer on incisal edge, small piece of porcelain chipped off and
wants you to fix the chip only, what is the sequence of events : - correct
answers✅✅1) microetch/micro abrasion
2) acid-etch
3) Silante (porcelain tx to help it stick to bonding agent)
4) bonding agent (MAS bonding)
Porcelain is stronger under what type of forces? - correct
answers✅✅COMPRESSSION Forces
,NBDE Part II – Prosthodontics Questions
and Answers A+ Guide
When you receive a crown back and want to seat it what is the first thing you
check for?
a) Shade (aesthetics) or internal
b) Proximal contacts
c) Margins - correct answers✅✅b) Proximal contacts
Most common complication of internal bleaching: - correct
answers✅✅Cervical/internal root resorption
also referred to as peripheral inflammatory root resorption. The presence of a
barrier (base material) between the root filling material and the internal
bleaching material should be ~4 mm to prevent this resorption.
Most successful teeth for bleaching? - correct answers✅✅aged yellow
staining
Bleach most often used in internal bleaching: - correct
answers✅✅Sodium perborate
A fixed partial denture keeps breaking, why? - correct answers✅✅Poor
framework
Most esthetic Pontic:
a) Saddle
b) Steins
,NBDE Part II – Prosthodontics Questions
and Answers A+ Guide
c) Sanitrary
d) Conical ridge lap
e) Modified ridge lap - correct answers✅✅e) Modified ridge lap
Patient had veneers cemented with light cured resin. Returns a few weeks
later with brown staining at gingival margins. Why? - correct
answers✅✅MICROLEAKAGE
How long after vital tooth bleaching can you bind resin to it?
a) 24 hours
b) 3 days
c) 1 week - correct answers✅✅c) 1 week
Modified ridge lap has what kind of contact? - correct answers✅✅Minimal
contact with residual ridge
How should the modified pontic touch the gum? - correct
answers✅✅barely touch it, rest gently/ should not blanch tissue
A pontic in the bridge shows the metal, why?
a) Under-reduction
b) Framework was not done well - correct answers✅✅b) Framework was
not done well
Which of the following is not ideal abutement-pontic connection?
, NBDE Part II – Prosthodontics Questions
and Answers A+ Guide
a) Central incisor-lateral incisor
b) Lateral incisor-central incisor
c) Canine-lateral incisor - correct answers✅✅b) Lateral incisor-central
incisor
worst cantilever is lateral abatement with central pontic
What system is best for soldering adjusted FPD framework? - correct
answers✅✅Oxygen torch soldering
Strength of Abutment connection to pontic, which is more important? -
correct answers✅✅Occluso-gingival width
How do you decrease the width of an artificial tooth?
a) Deepen the facial line angle proximally and increase interproximal
embrasure
b) Deepen the facial line angle proximally and decrease interproximal
embrasure
c) Take the facial line angle labially (closer together) and increase
interproximal embrasure
d) Take the facial line angle labially (closer together) and decrease
interproximal embrasure - correct answers✅✅c) Take the facial line angle
labially (closer together) and increase interproximal embrasure
What is the point of putting a dowel post on an RCT tooth? - correct
answers✅✅Retain core, metal set into root canal to provide support to
crown
