confusing Qs about NBDE II,PLEASE help!!!

[Avani]

an endodontically treated permanent mandibular first
molar has incipient lesions on its mesia and distal
surfaces. during previous treatment, a minimal
amount of tooth structure was removed, the
appropriate treatment for this tooth is
a MOD amalgam
B MOD cast gold inlay
C MOD cast gold onlay(i think this is right)
D 3/4
E full crown

what's shim stock?used to evaluating centric
occlusion on a newly placed onlay restoration?

when using an occlusal separator(what's it?),a
practitioner can expect which of the following types
of TMJ disorders ro respongd most favorably?
a chronic dislocation
b muscle spasm
c capsular fibrosis
d unilateral condylar hyperplasia

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[Avani]

a practitioner pickles gold alloy restorations by
heating them to redness and plunging them into an
acid bath.this precedure can result in which of the
following?
c warpage of the restoration?
d surface foughness of the restoration.
key is c.why?

 

[Avani]

a dentist will reline an extension-base removable
partial denture.which of the following should this
dentist use to establish preper placement an the
impression stage.
a finger pressure to the rests and indirect retainer
b finger pressure to the base area only
which one?why?

 

[Avani]

which of the following foor surfaces is the most
likely to be strip-perforated during canal
instrumentation of he mesial root of a mandibular
first molar?
a facial
b lingual
c mesial
d distal
why? and what's strip-perforated?

 

[Avani]

when is the appropriate time to take the first bite
-wing radiagraphs of a clinically caries-free child?
a when spaces between the posterior teeth have
closed.
what is this x-ray check for?

 

[Avani]

which condition is characterized by lesions in the
centarl nervous system that manifests itself as
various types of neuromuscular dysfunction?
a cerebral palsy
b hyperkinesis
which one?

a patient's permanent tooth crown fractures,creating
a small(1mm) pulp exposure for about 30minutes.which
of the following pulp therapies is the most
appropriate for this patient?
b direct pulp capping with calcium hydroxide.
that's the key.
what's the time limit for direct pulp capping?


a 15 year old patient has all teeth present, normal
occlusion, molar toots not fully calcified.the
mandibular right fist molar has a pathologic pulp
exposure.endodontics failed and the toothe must be
extracted.the subsequent treatment indicated is to
a place a space maintainer
b place a removable partial denture.
key is a,why not b?

 

[blueskydentist]

which condition is characterized by lesions in the
centarl nervous system that manifests itself as
various types of neuromuscular dysfunction?
a cerebral palsy
b hyperkinesis
which one?

I think its cerebral palsy

 

[blueskydentist]

when is the appropriate time to take the first bite
-wing radiagraphs of a clinically caries-free child?
a when spaces between the posterior teeth have
closed.
what is this x-ray check for?

Bite wing checks for inter proximal caries therefore,once the posterior teeth are in contact,it will check for proximal caries

 

[blueskydentist]

when using an occlusal separator(what's it?),a
practitioner can expect which of the following types
of TMJ disorders ro respongd most favorably?
a chronic dislocation
b muscle spasm
c capsular fibrosis
d unilateral condylar hyperplasia[/quote]

I think they are talking about night gaurds and in that case,the answer should be muscle spasm.


correct me if i am wrong

 

[Avani]

when using an occlusal separator(what's it?),a
practitioner can expect which of the following types
of TMJ disorders ro respongd most favorably?
a chronic dislocation
b muscle spasm
c capsular fibrosis
d unilateral condylar hyperplasia

I think they are talking about night gaurds and in that case,the answer should be muscle spasm.


correct me if i am wrong[/quote]
you are right! thanks.

 

[Avani]

Bite wing checks for inter proximal caries therefore,once the posterior teeth are in contact,it will check for proximal caries

but the stem says this child is caries-free.

 

[Avani]

which condition is characterized by lesions in the
centarl nervous system that manifests itself as
various types of neuromuscular dysfunction?
a cerebral palsy
b hyperkinesis
which one?

I think its cerebral palsy

i thought b could be one of the answers.
since patients with hyperkinesis show "one kind of "nueromuscluar dysfunction rather than "various types of ", b cannot be the correct one?

 

[Avani]

a patient's permanent tooth crown fractures,creating a small(1mm) pulp
exposure for about 30minutes.which of the following pulp therapies is
the most appropriate for this patient?
b direct pulp capping with calcium hydroxide.
that's the key.
what's the time limit for direct pulp capping?
why isn't 30minutes too long to perform pulp capping?

 

[Avani]

a 15 year old patient has all teeth present, normal occlusion, molar
toots not fully calcified.the mandibular right fist molar has a
pathologic pulp exposure.endodontics failed and the toothe must be
extracted.the subsequent treatment indicated is to
a place a space maintainer
b place a removable partial denture.
key is a,why not b?

 

[Avani]

mesioangular extopic eruption of a permanent maxillary first molar
causing resorptong of the distal surfaces of the roots of the primary
second molar should be treated by：
c： tipping the permanent first molar distally using a sepatating device
what's the device?how does it work on an erupting tooth?i mean,what if
this tooth is not clinically visible yet?

 

[Avani]

why is propranolol contraindicated in a patient with cardiac
arrhythmia?

 

[Avani]

a previously inserted silicate cement restoration is coated with a
protective medium when a rubber dam is applied in order to prevent
a expansion
b syneresis
c desiccation
d water sorption
which one?and why?

 

[Avani]

in what situation can a proximal cavity be prepared and be limited to the involved proximal surface?

 

[Avani]

dental development in a child,as measured by tooth and root
formation,proceeds as a rate which is
a independent on left and right sides of the mouth
b independent of the degree of skeletal development.
which one?why?

 

[Avani]

does compound odontoma have inductive influence on the mesenchymal
tissues?
how?

 

[Avani]

a periodontal pocket can be seen radiographically on which of the
following surfaces?
a mesial
b distal
c both
d none
key is d,why?

 

[Avani]

a patient wearing complete dentures has trouble swallowing.what is the
most probable cause?
a insuffient interocclusal space
b excessive interocclusal space
which one?why?

 

[Avani]

mechanical properties of which of the following base metal alloys can
be improved by heat treatment?
a co-cr
b co-ni-cr
c ni-cr
d none(key) why?

 

[Avani]

the biologic requirements of an anterior 3/4crown include：
a： maintainng the health of the investing tissues
b： a staple form of axial and incisal grooves that prevent axial
spreading.
what does b mean?

 

[Avani]

exposure of a stone cast to tap water should be minimized because
b eroding of the cast will result
how????

 

[Avani]

which of the following conditions hasten the destruction of a znpo4
cenment film used for luting?
a abrasion(key)
how could the luting be abrased?

 

[Avani]

the nonrigid connector may be used in fixed bridges in those cases
involving
a long span bridges replacing two or more teeth
b short span bridge preplacing one missing toothe where the prepared
abutment teeth are not in parallel alighment
b is key.but why not a?

 

[Avani]

as the denture base settles due to lower ridge resorption,the effect is
to
a make the chin recede
b eliminated the mentolabial sulcus
c make the nasolabial fold deepen
d make the chin appear protruded
which two?

 

[Avani]

which of the following clinical situations are contraindicated for use
of a partial veneer crown?
a short teeth
b long teeth
c teeth too small or thin for accurate positioning of proximal grooves
d teeth with prximal contact aresa at the gingival margin
e teeth in a mouth with alow caries index
key is a,c,d
why d?

 

[Avani]

which characterize nitrous oxide?
a good analgesia
b poor skeletalmuscle relaxation
c rapid induction in concentrations of 80%
why a?
many studies show that nitrous oxide does not have good analgesia,in a
study,almost 1/3 labouring women said nitrous oxide has not any
effect.

 

[Avani]

the contact area on the distal surface of a maxillary first premolar
should be placed in the
key: occlusal third of the proximal surface with the lingual embrasure
greater than the facial embrasure
why occlusal third?should it be middle and occlusal ?

 

[Avani]

the only area where cavosurface margings or wall juctions of an onlay
cavity are never beveled or planed is where?
the facial and lingual cavosurface margins?



when and where can we use zinc choloride-impregnated cord?

 

[blueskydentist]

but the stem says this child is caries-free.

As the child is five,one can take a routine bitewing to check for caries...I think caries free is mentioned just to confuse.

Just my opinion...

 

[blueskydentist]

i thought b could be one of the answers.
since patients with hyperkinesis show "one kind of "nueromuscluar dysfunction rather than "various types of ", b cannot be the correct one?

The correct ans should be cerebral palsy as patient presents with various types of NM dysfunction:
Spastic
Dyskinetic
Ataxic
Mixed

 

[blueskydentist]

which of the following clinical situations are contraindicated for use
of a partial veneer crown?
a short teeth
b long teeth
c teeth too small or thin for accurate positioning of proximal grooves
d teeth with prximal contact aresa at the gingival margin
e teeth in a mouth with alow caries index
key is a,c,d
why d?

I think d coz proximal contact area at gingival margin would increase the chance of gingival involvement during proximal groove preparation

 

[blueskydentist]

which characterize nitrous oxide?
a good analgesia
b poor skeletalmuscle relaxation
c rapid induction in concentrations of 80%
why a?
many studies show that nitrous oxide does not have good analgesia,in a
study,almost 1/3 labouring women said nitrous oxide has not any
effect.

I agree with you,it shouldn't be a

 

[blueskydentist]

the nonrigid connector may be used in fixed bridges in those cases
involving
a long span bridges replacing two or more teeth
b short span bridge preplacing one missing toothe where the prepared
abutment teeth are not in parallel alighment
b is key.but why not a?

The ans should be b as non rigid connector is indicated in cases where a single path of insertion can't be achieved due to non parallel abutments and these connectors allow a limited movement bet retainer and pontic.

 

[aphistis]

As the child is five,one can take a routine bitewing to check for caries...I think caries free is mentioned just to confuse.

Just my opinion...

It said "CLINICALLY caries-free", which just means you can't visually identify any lesions. One of the main indications for bitewing films is detection of caries in locations where lesions can't be directly visualized.

 

[blueskydentist]

It said "CLINICALLY caries-free", which just means you can't visually identify any lesions. One of the main indications for bitewing films is detection of caries in locations where lesions can't be directly visualized.

good point

 

[blueskydentist]

as the denture base settles due to lower ridge resorption,the effect is
to
a make the chin recede
b eliminated the mentolabial sulcus
c make the nasolabial fold deepen
d make the chin appear protruded
which two?

I think its b and d due to pattern of mandibular resorption.The origin of mentalis m which is initially low shifts near the crest of the ridge resulting in elimination of mentolabial sulcus and the lip inclines inward,making the chin appear protruded.

 

[docsmiley]

for the last question, can it not be ..c..because the maxillary denture will settle on a poor ridge and cheek support is lost?

 

[hazelnut123]

an endodontically treated permanent mandibular first
molar has incipient lesions on its mesia and distal
surfaces. during previous treatment, a minimal
amount of tooth structure was removed, the
appropriate treatment for this tooth is
a MOD amalgam
B MOD cast gold inlay
C MOD cast gold onlay(i think this is right)
D 3/4
E full crown


what's shim stock?used to evaluating centric
occlusion on a newly placed onlay restoration?

when using an occlusal separator(what's it?),a
practitioner can expect which of the following types
of TMJ disorders ro respongd most favorably?
a chronic dislocation
b muscle spasm
c capsular fibrosis
d unilateral condylar hyperplasia

hi..for the first question, caN IT NOT BE..FULL CROWN?

 

[aphistis]

for the last question, can it not be ..c..because the maxillary denture will settle on a poor ridge and cheek support is lost?

Read the question more carefully. It's asking specifically about mandibular dentures, not maxillary.

 

[aphistis]

hi..for the first question, caN IT NOT BE..FULL CROWN?

Crowning the tooth would involve unnecessary removal of healthy tooth structure during preparation. In real life, yes, you frequently crown endo-treated molars, but for the test, an otherwise sound tooth would get an onlay after RCT.

 

[docsmiley]

hey aphistis..
thanks a lot ..yes..i missed the mandibular denture information...

 

[Momani]

CAN YOU GUYS PLEASE HELP WITH THIS QUESTION:
A blow in the right body of the mandible causes a fracture where else :
A.right condole, B. left condyle, C. angle of mandible D. ramus.
THANK YOU

 

[Avani]

The ans should be b as non rigid connector is indicated in cases where a single path of insertion can't be achieved due to non parallel abutments and these connectors allow a limited movement bet retainer and pontic.

thank you for your reply!

 

[Avani]

Crowning the tooth would involve unnecessary removal of healthy tooth structure during preparation. In real life, yes, you frequently crown endo-treated molars, but for the test, an otherwise sound tooth would get an onlay after RCT.

thanks for your reply! i think you have got the point.
i think in the same way as you do, what confuses me is, at the point of teeth structure preservation,which plan is better,since there are mesial and distal lesions too.

 

[Avani]

hi..for the first question, caN IT NOT BE..FULL CROWN?

thanks for your reply~
i think it's hard to rule out full crown,because there are lesions in the mesial and distal surfaces,and the specific locations are unknown.
what do you think?

 

[Avani]

Originally Posted by Avani
which of the following clinical situations are contraindicated for use
of a partial veneer crown?
a short teeth
b long teeth
c teeth too small or thin for accurate positioning of proximal grooves
d teeth with prximal contact aresa at the gingival margin
e teeth in a mouth with alow caries index
key is a,c,d
why d?
I think d coz proximal contact area at gingival margin would increase the chance of gingival involvement during proximal groove preparation
－－－－－－－－－－－－－－
thanks for your reply!
i think perhaps you are not right. a teeth with the proximal contact area at gingival margin could decrease the risk of gingiva involvement.
further more, i think this question is not good,because the proximal contact area depends on two neighboring tooth. i mean, a teeth of normal shape could have an abnormal contact area(more gingival than usual) once its neighboring teeth is abnomal in shape.

correct me if i'm wrong.