NBDE part II question

[funstuff]

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can someone try to help answer questions:

Daily cleaning of root surface by the patient has been shown to
a. cause root sensitivity
bcause root resorption
c. stimbulates epi attachment
d. allow remineralization of root surface

i think it is d

 

[Endodontia]

Some more questions , Thanks a lot in advance
hich of the following are the primary bacterial invaders that cause pulpal infections?
1. Staphylococci
2. Facultative aerobes
3. Gram-positive strict anaerobes
4. Streptococci and gram-negative rods
5. Non-specific salivary microorganisms
Resistance form of endodontics is:
1. Resists movement of guttapercha in apical area.
2. To allow use of spreader in lateral condensation.
3. To apply use of plugger in vertical condensatio

All are true for home bleaching, except:
1. Uses 15% carbamide peroxide. Not sure about this.
2. In addition to bleaching agent carbapol is used
3. Vacuum from vinyl trays are used.
4. Both arches bleached simultaneously.

. I.V. anesthesia is:
1 propofol
2. Sevoflurane.
3. Flumazanil.
4. Naloxane.

About K file all are true, except:
1. Has more no. of flutes than reamer.
2. K file is more flexible than reamer.
3. Used to machine the dentin.
4. Made up of triangular/square blan
all the above options are true for k file except k file has square blank and reamer has a triangular blank...thts d difference

 

[persiandentist]

Thanks Endodontia and other freinds for your answers , unfortunately I don't have the exact answers ,
I agree with the answers exept the bleaching one and the drain one , I try to find out the exact answers of these two , and let you know

 

[persiandentist]

Here are some more , thanks in advance
Chi square test is:

1. Measures qualitative data.
2. Measures both qualitative and quantitative data.
3. Measures the qualitative data between two proportions.
4. Measures the quantitative data between two proportions.

In taking an impression with polysulfide or
silicone materials, if the heavy bodied tray
material begins to set before seating, the
resultant die will

A. not be affected dimensionally.
B. be overall smaller.
C. be overall larger.
D. develop a rough surface texture.
E. develop bubbles at the interface of
the syringe and tray material


The use of a reservoir on the sprue of a wax pattern decreases:

A. volumetric changes in the casting -
B. casting porosity from inclusion of gases
C. casting porosity from inclusion of foreign bodies
D. casting porosity during solidification


What percentage of well-instructed
patients will have ineffective plaque
removal with conventional toothbrush
A. 10-20%
B. 20-30%
C. 30-40%
D. 80-90%.

Which of the following is NOT usually an
indication for primary dentition ortho
treatment?
A. posterior crossbite
B. anterior crossbite
C. moderate class I crowding
D. severe class I crowding
E. class II

 

[dentist2013]

hey Persiandentist..
Here are the answer correct me, if i am wrong....

Chi square test is:

1. Measures qualitative data.
2. Measures both qualitative and quantitative data.
3. Measures the qualitative data between two proportions. - ans
4. Measures the quantitative data between two proportions.

In taking an impression with polysulfide or
silicone materials, if the heavy bodied tray
material begins to set before seating, the
resultant die will

A. not be affected dimensionally.
B. be overall smaller. - ans
C. be overall larger.
D. develop a rough surface texture.
E. develop bubbles at the interface of
the syringe and tray material


The use of a reservoir on the sprue of a wax pattern decreases:

A. volumetric changes in the casting -
B. casting porosity from inclusion of gases
C. casting porosity from inclusion of foreign bodies
D. casting porosity during solidification
ans

What percentage of well-instructed
patients will have ineffective plaque
removal with conventional toothbrush
A. 10-20%
B. 20-30%
C. 30-40%----not sure about this.....do let me know
D. 80-90%.

Which of the following is NOT usually an
indication for primary dentition ortho
treatment?
A. posterior crossbite
B. anterior crossbite
C. moderate class I crowding--e-not sure abt this too...confused between this and anterior crossbite
D. severe class I crowding
E. class II

 

[the stig]

hey guys...can anyone help me understanding terms like `width of cutting edge` l`length of cutting edge` `cutting edge angle` blade angle` etc . And where can i see pictures of hand cutting instruments...like hoes ordinary hatchets...enamel hatchets and all tht..i dont get a word of it...i would really appreciate the help..thnx very much

 

[marco09]

evidence from clinical studies shows that dietary sucrose does not increase glycemia more than isocaloric amounts of starch. thus, intake of sucrose and sucrose-containing foods by people with diabetes does not need to be restricted because of concern about aggravating hyperglycemia.



the glycemic index (gi) remains the basic guide for effective management of blood glucose levels. that said, while low-gi diets may indeed reduce postprandial glycemia, the ability of individuals to maintain these diets in the long-term is not yet fully established. Some studies of persons with type 1 diabetes or type 2 diabetes in which low glycemic index diets were compared with high glycemic index diets do not report consistent improvements in hba1c, fructosamine, or insulin levels.

thanks endodontia and lucky 5 for answering,the answer you give about nutrition in diabetic patients is great thanks in advance🙂

 

[marco09]

Hi again i was researching in boardbusters and i found this....

originally posted by marco09
the antibiotic of choice for a periradicular dental abscess is
a. Penicillin v. (not sure)
b. Cephalosporin.
c. Erythromycin.
d. Metronidazole.
e. Ampicillin

my ans is a but e could be?????

ampicilin have a greater spectrum but cephalosporines(2do generation do treat oro dental infections acute cellulitis and periapical abscesss(what i wrote about cephalosporines is textually can't blieve it. So i think it's b



any sugerences
i am stuck betweer a and e as well. Does anyone know this?


during penicillin therapy, signs that may be considered as allergic manifestations are
a. Deafness, dizziness and acute anemia.
b. Crystalluria, nausea, vomiting and anaphylactic shock.
c. Oliguria, hematuria, bronchoconstriction and cardiovascular collapse.
d. Dermatitis, stomatitis, bronchoconstriction and cardiovascular collapse.
(my answer is d)

my ans b

here i keep my answer even if a found that rush is the most common reaction in alergic patients that takes peniccilin (10%just get into anaphilactic reaction)

which of the following penicillins is most effective against gram-negative organisms?
a. Nafcillin.
b. Ampicillin. (my answer)
c. Methicillin.
d. Penicillin v.
e. Phenethicillin.

mu ans b

here t ake ampicillin aminopenicilins works better have a broader spectrum than methilpenicilins and naturall penicilins

your thought,s guys🙂

thanks guys🙄

 

[marco09]

Stability in partial dentures is best ensured by
A. use of cast clasps.
B. establishing harmonious occlusion.
C. incorporating all undercut areas available.
D. use of indirect retention

think it,s A remember a cast clasp contain the reciprocal arm)but i found in mackracken that indirect retention could give some poor stability???



The function of the reciprocal clasp arm is to
5. act as an indirect retainer.
6. stabilize the abutment teeth.
7. act as a direct retainer for the distal base.
8. counteract any force transmitted by the retentive arm.
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above

my ans c


The best way to protect the abutments of a Class I removable partial denture from the negative effects of the additional load applied to them is by
A. splinting abutments with adjacent teeth.
B. keeping a light occlusion on the distal extensions.
C. placing distal rests on distal abutments.
D. using cast clasps on distal abutments.
E. regular relining of the distal extensions.
my ans E

A patient complains of the discolouration of an upper central incisor. Radiographically, the pulp chamber and the root canal space are obliterated and the periodontal ligament space appears normal. The most appropriate treatment would be to
A. perform root canal treatment and non vital bleaching.
B. perform root canal treatment and fabricate a post retained porcelain fused to metal crown.
C. perform root canal treatment and fabricate a porcelain veneer.
D. fabricate a porcelain fused to metal crown.
E. fabricate a porcelain veneer.

my ans E🙂

 

[the stig]

where is my reply guys? i need help!

 

[marco09]

hey guys...can anyone help me understanding terms like `width of cutting edge` l`length of cutting edge` `cutting edge angle` blade angle` etc . And where can i see pictures of hand cutting instruments...like hoes ordinary hatchets...enamel hatchets and all tht..i dont get a word of it...i would really appreciate the help..thnx very much

hi stig, well you can see that in sturdervant book, it is well explained then, you'll kown the diferences between hatchet family and chiesel familiy, the clasifiction and the formula's of each instrument, hope you,,the width, angle of cutting edge,length, and the angle of the blade hope this will help you🙂

 

[the stig]

thnx for reply...but which book is tht again? i looked it up coudnt find any book with this name....do u know of any link abt this book or anything which explains my questions in a bit of detail ? thnx once again mate!

 

[marco09]

thnx for reply...but which book is tht again? i looked it up coudnt find any book with this name....do u know of any link abt this book or anything which explains my questions in a bit of detail ? thnx once again mate!

this is the link.....🙂

www.elsevier.com/wps/product/cws_home/707517 -

or

 

[the stig]

this is the link.....🙂

www.elsevier.com/wps/product/cws_home/707517 -

or

thank you very much

 

[angiematt]

pls help

Prognosis of tooth with GTR is better in Mx molar than with Mnd molar. T/F
which type of flouride causes the most staining???

thanx

 

[angiematt]

these too pls

where do you inject to achieve a block of the maxillary nerve
a. infratemporal fossa
b. pterygomandibular fossa
c. sphenopalatine fossa
d. pterygotympanic fissure

Which of the following has the BEST survival rate?
* Squamous cell carcinoma
* Adenocarcinoma
* Osteosarcoma

What has the least root surface area in mm squared?
* Mx Lateral
* Mx Central
* Mnd 1st PM

Small white lesion on the tooth the patient’s whole life. What caused it?
* Hypercalcification during the first 6-12 months
* Hypercalcification during natal
* Hypercalcification during the primary tooth

What is the definition of total anterior facial height on Ceph

a.nasion- menton
b.A-B
c. A-menton
d. ANS- menton

thanx

 

[dentist2013]

where do you inject to achieve a block of the maxillary nerve
a. infratemporal fossa
b. pterygomandibular fossa
c. sphenopalatine fossa-same as pterygopalatine fossa
d. pterygotympanic fissure

Which of the following has the BEST survival rate?
* Squamous cell carcinoma- 5 yr survival rate
* Adenocarcinoma- salivary gland tumor-best prognosis and survival following excision
* Osteosarcoma- 5 yr survival rate

What has the least root surface area in mm squared?
* Mx Lateral- not sure
* Mx Central
* Mnd 1st PM

Small white lesion on the tooth the patient's whole life. What caused it?
* Hypercalcification during the first 6-12 months-because calcification starts at birth of permanent dentition and it mite be due to flouride intake
* Hypercalcification during natal
* Hypercalcification during the primary tooth

What is the definition of total anterior facial height on Ceph
a. nasion to menton- --this should be the answer as these are top and inferior points on face
b.A-B
c. A-menton
d. ANS- menton

 

[angiematt]

@dentist2013- thanx a bunch...

I have these too

Prognosis of tooth with GTR is better in Mx molar than with Mnd molar. T/F
which type of flouride causes the most staining???

Thanx

 

[dentist2013]

@ angiematt,

its false ---the amount of epithelial attachement improvement and reduction in pocket depth in mandibular furcations is better than maxillary----studies have proven that and its given in newman

i dont know the flouride one---lemme know if u gt tht answer
i guess it should be stannous flouride......but please do lemme know u get them..

 

[dentist2013]

@marco9... ur almost all answers seems true to me... and have explained about stability, hope it clears ur doubt.

Stability in partial dentures is best ensured by
A. use of cast clasps.
B. establishing harmonious occlusion.
C. incorporating all undercut areas available.
D. use of indirect retention

think it,s A remember a cast clasp contain the reciprocal arm)but i found in mackracken that indirect retention could give some poor stability???
cast clasps provide retention of partial denture, but stability against dislodgement of partial denture away from tissue in distal extension is provided by indirect retainers


The function of the reciprocal clasp arm is to
5. act as an indirect retainer.
6. stabilize the abutment teeth.
7. act as a direct retainer for the distal base.
8. counteract any force transmitted by the retentive arm.
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above

my ans c- yes thts true...


The best way to protect the abutments of a Class I removable partial denture from the negative effects of the additional load applied to them is by
A. splinting abutments with adjacent teeth.
B. keeping a light occlusion on the distal extensions.
C. placing distal rests on distal abutments.
D. using cast clasps on distal abutments.
E. regular relining of the distal extensions.

A patient complains of the discolouration of an upper central incisor. Radiographically, the pulp chamber and the root canal space are obliterated and the periodontal ligament space appears normal. The most appropriate treatment would be to
A. perform root canal treatment and non vital bleaching.
B. perform root canal treatment and fabricate a post retained porcelain fused to metal crown.
C. perform root canal treatment and fabricate a porcelain veneer.
D. fabricate a porcelain fused to metal crown.
E. fabricate a porcelain veneer.

 

[persiandentist]

Thank you very much dentist 2013 , unfortunately I don't have the answers

Here are more questions too

which tooth will the matrix band be a problem with when placing a two surface amalgam?
a. Mesial on maxillary first molar
b. Distal on maxillary first premolar
c. Mesial on maxillary second premilar
d. Distal on mandibular first molar
　
　
　
. For diagnosis of mouth breathing which is not used?

1. Rhinomanometry.
2. Cephalography.
3. Kiesiography.
4. Mouth mirror.

The time for most finishing and polishing procedures for an indirect cast restoration is

a. only after cementing the casting.
b. before and after cementing the casting.
c. after the casting is tried on the tooth.
d. before the casting is tried on the tooth.

 

[persiandentist]

thank you very much 2013

Chi square test is:

1. Measures qualitative data.
2. Measures both qualitative and quantitative data.
3. Measures the qualitative data between two proportions. - ans
4. Measures the quantitative data between two proportions.

In taking an impression with polysulfide or
silicone materials, if the heavy bodied tray
material begins to set before seating, the
resultant die will

A. not be affected dimensionally.
B. be overall smaller. - ans
C. be overall larger.
D. develop a rough surface texture.
E. develop bubbles at the interface of
the syringe and tray material


The use of a reservoir on the sprue of a wax pattern decreases:

A. volumetric changes in the casting -
B. casting porosity from inclusion of gases
C. casting porosity from inclusion of foreign bodies
D. casting porosity during solidification
ans
I am not sure in this care ,do you have any ref ?

What percentage of well-instructed
patients will have ineffective plaque
removal with conventional toothbrush
A. 10-20%
B. 20-30%
C. 30-40%----not sure about this.....do let me know
D. 80-90%.

Which of the following is NOT usually an
indication for primary dentition ortho
treatment?
A. posterior crossbite
B. anterior crossbite
C. moderate class I crowding--e-not sure abt this too...confused between this and anterior crossbite
D. severe class I crowding
E. class II
I think the answer is CL II because we can't treat the sceletal cl II in mix dentition

 

[marco09]

hi guys, thanks dentist2013 for answering, well i have more qc maybe you can give me a hand.

Lack of ramus height is caused by faulty development of
A. membranous bone.
B. endochondral bone.
C. Meckel’s cartilage.
D. temporomandibular joint

my ans b( my rationale is that condyle grows upward and backward which is controlled by endocondreal growth,so if condyle growth that way the entire mandibule go downward and forward developping the ramus) please discuss

Odontoblast gap junctions
A. adhere the cells to one another.
B. attach the cells to the basement membrane.
C. seal off the dentin from the pulp.
D. permit lateral cell-cell communication.

my ans D9(i doubt with A ,B could not be cause it 'll be hemidesmoseomes,and c could not be cause it 'll be ocludens zone)


Local anesthetics
A. do not readily pass the blood-brain barrier.
B. interfere with the propagation of action potentials in nerve fibres.
C. selectively interfere with the propagation of action potentials in nociceptive fibres.
D. do not have an effect on any other tissue than the nervous tissue.


my ans b

0.12% chlorhexidine mouthrinses are effective in modifying plaque quantity and quality because of their selective activity against
A. streptococcus sanguis.
B. lactobacillus acidophilus.
C. streptococcus mutans.
D. lactobacillus casei

my ans c

For a 62 year old female with complete dentures who has never smoked, which of the following clinical lesions has the highest probability of progressing to squamous cell carcinoma?
A. Smooth red patch of the mid posterior dorsal tongue.
B. Bilateral buccal mucosal leukoedema.
C. White plaque of the mandibular alveolar ridge mucosa.
D. White plaque of the ventral tongue

my ans d

Post-immunization serological test results for a health care worker who has completed the series of vaccinations against hepatitis B is informed that their anti-HBsAg is less than the value required for immunity. The health care worker should

A. receive one additional vaccination followed by post-immunization testing.
B. undergo the full series of hepatitis B vaccinations followed by post-immunization testing.
C. refrain from performing any exposure-prone procedures for a period of 3-6 months followed by a full series of hepatitis B vaccinations.
D. have liver function tests performed to assess liver damage from a previous hepatitis B infection.

my ans a

Oral foci of infection are of greatest concern in patients with which of the following conditions?
A. Type 2 diabetes.
B. Iron deficiency anemia.
C. Hypertension.
D. Rheumatic heart disease.

my ans d

In fibrous dysplasia
A. foci of cartilage are a common histological finding.
B. an inflammatory infiltrate is characteristically present.
C. there are characteristic changes in the blood chemistry.
D. a ground-glass appearance is present on radiographs

my ans D

A draining fistula of short duration related to a tooth undergoing endodontic therapy requires
A. irrigation of canals.
B. antibiotics.
C. surgical excision.
D. no special treatment

my ans D(i doubt with A???)

Which of the following results from a necrotic pulp?
A. Dentigerous cyst.
B. Lateral periodontal cyst.
C. Dental granuloma.
D. Pulp polyp.
E. Periapical osteofibrosis

my ans c

The histopathologic changes in chronic gingivitis are characterized by
A. loss of rete pegs and dissolution of the basement membrane.
B. hyalinization of the principal fibres of the periodontal ligament.
C. disruption of the gingival fibres and an inflammatory infiltrate of plasma cells and lymphocytes.
D. an inflammatory infiltrate in which polymorphonuclear cells predominate.

my ans c

Chronic periodontitis is characterized as
A. inflammatory.
B. irreparable.
C. atrophic.
D. hyperplastic.
E. none of the above

my ans A

Which patient would NOT be predisposed to liver toxicity following a dose of 1,000mg of acetaminophen?
A. An adult with liver cirrhosis.
B. A chronic alcoholic.
C. A diabetic.
D. A 15kg, 4 year old child.

my ans c

Composite resin is a satisfactory core material for endodontically treated teeth provided
A. the resin has a high contrast colour with tooth structure.
B. there is an adequate ferrule.
C. the resin is autopolymerizing.
D. subsequent crown margins are not located on cementum

my ans A


thanks guys🙂

 

[marco09]

i miss this one

A patient on anticoagulant drugs who requires an extraction has a prothrombin time of 20~seconds. The control is 15~seconds. You would
A. administer vitamin K after the extraction.
B. administer vitamin K before the extraction.
C. extract the tooth and use local measures to control bleeding.
D. discontinue anticoagulation drugs one week before extraction

my ans is c

thanks again

 

[dentist2013]

hi persian here i have found out some answers,,,do lemme know if m wrong

Thank you very much dentist 2013 , unfortunately I don't have the answers

Here are more questions too

which tooth will the matrix band be a problem with when placing a two surface amalgam?
a. Mesial on maxillary first molar
b. Distal on maxillary first premolar- -ideally it should be mesial of maxilary 1st PM due mesial concavity,,
c. Mesial on maxillary second premilar
d. Distal on mandibular first molar
　
　
　
. For diagnosis of mouth breathing which is not used?

1. Rhinomanometry.
2. Cephalography.
3. Kiesiography. ---i think it should kinesiography and its related to joint examination....its not used in mouth breathing....rest all are used,,,,,,,,,,,,IF its kiesiography only than plz tell me wht it is ...m unaware of it
4. Mouth mirror.

The time for most finishing and polishing procedures for an indirect cast restoration is

a. only after cementing the casting.
b. before and after cementing the casting.
c. after the casting is tried on the tooth.
d. before the casting is tried on the tooth.

 

[dentist2013]

hi persiandentist, Marco09,,,,,here are my explainations,,,,pls do correct me if m wrong

1.regarding reservoir its a small sphere attached to the sprue as near as possible to sprue pattern junction to provide the molten metal, in cases where sprue is smaller than the greatest width of pattern. if the sprue former is sufficient big there is no need of reservoir. This stuff have read it from sturdvent, so u can look there

2. And regarding skeletal class II has best prognosis when treated during adolescents using orthopedic and funcitonal devices as they modify the growth of maxilla and mandible, head gears are used best for them

thank you very much 2013

Chi square test is:

1. Measures qualitative data.
2. Measures both qualitative and quantitative data.
3. Measures the qualitative data between two proportions. - ans
4. Measures the quantitative data between two proportions.

In taking an impression with polysulfide or
silicone materials, if the heavy bodied tray
material begins to set before seating, the
resultant die will

A. not be affected dimensionally.
B. be overall smaller. - ans
C. be overall larger.
D. develop a rough surface texture.
E. develop bubbles at the interface of
the syringe and tray material


The use of a reservoir on the sprue of a wax pattern decreases:

A. volumetric changes in the casting -
B. casting porosity from inclusion of gases
C. casting porosity from inclusion of foreign bodies
D. casting porosity during solidification
ans
I am not sure in this care ,do you have any ref ?

What percentage of well-instructed
patients will have ineffective plaque
removal with conventional toothbrush
A. 10-20%
B. 20-30%
C. 30-40%----not sure about this.....do let me know
D. 80-90%.

Which of the following is NOT usually an
indication for primary dentition ortho
treatment?
A. posterior crossbite
B. anterior crossbite
C. moderate class I crowding--e-not sure abt this too...confused between this and anterior crossbite
D. severe class I crowding
E. class II
I think the answer is CL II because we can't treat the sceletal cl II in mix dentition

 

[mmasurf]

The time for most finishing and polishing procedures for an indirect cast restoration is

a. only after cementing the casting.
b. before and after cementing the casting.
c. after the casting is tried on the tooth.
d. before the casting is tried on the tooth.

thats the answer, for anyone who has cemented an onlay or an inlay u always do adjustments after cementation or u can risk fracturing the entire restoration.

 

[dentist2013]

Hi mmasurf,
Intially, I also thought it was the answer, but when i looked in the textbook of operative, they say the entire thing to be done before trying in the mouth when it is still on the die, that is burnishing, finishing with core abrasives and polishing all are done in the lab before try in.....if u can find the source for ur answer please lemme know

The time for most finishing and polishing procedures for an indirect cast restoration is

a. only after cementing the casting.
b. before and after cementing the casting.
c. after the casting is tried on the tooth.
d. before the casting is tried on the tooth.

thats the answer, for anyone who has cemented an onlay or an inlay u always do adjustments after cementation or u can risk fracturing the entire restoration.

 

[persiandentist]

hi persian here i have found out some answers,,,do lemme know if m wrong

Thank you very much dear 2013 ,specially for describing resirvior
I think with Cephalometry we can only findout open bite but not the reason , this is my opinion , I am not sure
about finishing and polishing I think both before and after
thanks

 

[dentist2013]

hi persiandentist: did u gt the answer for this question
which of the following is not an indication of primary dentition

1, moderate class I crowding
2, severe class I crowding
3, anterior crossbite
4. posterior crossbite
5. class II
Please anybody has a reasoning for the answer please tell me, i thought it was moderate class I, but found out in mosby and it seems Class II now.....Can anyone explain

Thank you very much dear 2013 ,specially for describin

 

[marco09]

The time for most finishing and polishing procedures for an indirect cast restoration is

a. only after cementing the casting.
b. before and after cementing the casting.
c. after the casting is tried on the tooth.
d. before the casting is tried on the tooth.

thats the answer, for anyone who has cemented an onlay or an inlay u always do adjustments after cementation or u can risk fracturing the entire restoration.

himmsurf,it is not a ceramic or a composite inderect inlay, so you can prove it in mouth cause is a CAST indirect restoration it's D🙂

 

[blasphy]

in my opinion the ans should be anterior crossbite as normally we never see ant crossbite mentioned its always post crossbite ant spacing ant deep bite and moderate or severe crowding in class 1 malocclusion i think that should be the ans (pls comment)
i have a few q's myself
) 6 year 10 mon child with cleft palate and lip not given which atbt as premedication
erythromycin; amox;Pn none
2)in the above pt when is the surgical corr of palate best time
after eruption of max canine;after erupn of ant teeth;after erupn of molars
3)most comm ging prob in children?
localized gingivitis;ANUG;juvenile pditis
4)after food consumption the max ph raised in mouth is
20-25;10-15;5-7;1-3
5)experimental gingivtis model: which of the foll. is NOT included
a)demonstrates rel. between plaque form and gingivitis
b)demonstrates that gingivitis is a reversible process
c)proves that gingivitis progresses to pditis
4)supports non specific plaque hypothesis

 

[RCT24]

Has anyone used Board Busters for NBDE Part II? If so, was it helpful? Also, what did you guys find to be the best study material? I am taking the exam in December😱

 

[dentist2013]

hi marco 09,
almost all of ur answers seems rite to me excetp the
1. odontoblast gap junctions:- i think its A --cell to cell junction
just Word Gap gives the notion of lateral cell communication

and in the last question its B---it should have adequate ferrule effect or else the restoration is going to fail.

hi guys, thanks dentist2013 for answering, well i have more qc maybe you can give me a hand.

Lack of ramus height is caused by faulty development of
A. membranous bone.
B. endochondral bone.
C. Meckel’s cartilage.
D. temporomandibular joint

my ans b( my rationale is that condyle grows upward and backward which is controlled by endocondreal growth,so if condyle growth that way the entire mandibule go downward and forward developping the ramus) please discuss

Odontoblast gap junctions
A. adhere the cells to one another.
B. attach the cells to the basement membrane.
C. seal off the dentin from the pulp.
D. permit lateral cell-cell communication.

my ans D9(i doubt with A ,B could not be cause it 'll be hemidesmoseomes,and c could not be cause it 'll be ocludens zone)


Local anesthetics
A. do not readily pass the blood-brain barrier.
B. interfere with the propagation of action potentials in nerve fibres.
C. selectively interfere with the propagation of action potentials in nociceptive fibres.
D. do not have an effect on any other tissue than the nervous tissue.


my ans b

0.12% chlorhexidine mouthrinses are effective in modifying plaque quantity and quality because of their selective activity against
A. streptococcus sanguis.
B. lactobacillus acidophilus.
C. streptococcus mutans.
D. lactobacillus casei

my ans c

For a 62 year old female with complete dentures who has never smoked, which of the following clinical lesions has the highest probability of progressing to squamous cell carcinoma?
A. Smooth red patch of the mid posterior dorsal tongue.
B. Bilateral buccal mucosal leukoedema.
C. White plaque of the mandibular alveolar ridge mucosa.
D. White plaque of the ventral tongue

my ans d

Post-immunization serological test results for a health care worker who has completed the series of vaccinations against hepatitis B is informed that their anti-HBsAg is less than the value required for immunity. The health care worker should

A. receive one additional vaccination followed by post-immunization testing.
B. undergo the full series of hepatitis B vaccinations followed by post-immunization testing.
C. refrain from performing any exposure-prone procedures for a period of 3-6 months followed by a full series of hepatitis B vaccinations.
D. have liver function tests performed to assess liver damage from a previous hepatitis B infection.

my ans a

Oral foci of infection are of greatest concern in patients with which of the following conditions?
A. Type 2 diabetes.
B. Iron deficiency anemia.
C. Hypertension.
D. Rheumatic heart disease.

my ans d

In fibrous dysplasia
A. foci of cartilage are a common histological finding.
B. an inflammatory infiltrate is characteristically present.
C. there are characteristic changes in the blood chemistry.
D. a ground-glass appearance is present on radiographs

my ans D

A draining fistula of short duration related to a tooth undergoing endodontic therapy requires
A. irrigation of canals.
B. antibiotics.
C. surgical excision.
D. no special treatment

my ans D(i doubt with A???)

Which of the following results from a necrotic pulp?
A. Dentigerous cyst.
B. Lateral periodontal cyst.
C. Dental granuloma.
D. Pulp polyp.
E. Periapical osteofibrosis

my ans c

The histopathologic changes in chronic gingivitis are characterized by
A. loss of rete pegs and dissolution of the basement membrane.
B. hyalinization of the principal fibres of the periodontal ligament.
C. disruption of the gingival fibres and an inflammatory infiltrate of plasma cells and lymphocytes.
D. an inflammatory infiltrate in which polymorphonuclear cells predominate.

my ans c

Chronic periodontitis is characterized as
A. inflammatory.
B. irreparable.
C. atrophic.
D. hyperplastic.
E. none of the above

my ans A

Which patient would NOT be predisposed to liver toxicity following a dose of 1,000mg of acetaminophen?
A. An adult with liver cirrhosis.
B. A chronic alcoholic.
C. A diabetic.
D. A 15kg, 4 year old child.

my ans c

Composite resin is a satisfactory core material for endodontically treated teeth provided
A. the resin has a high contrast colour with tooth structure.
B. there is an adequate ferrule.
C. the resin is autopolymerizing.
D. subsequent crown margins are not located on cementum

my ans A


thanks guys🙂

 

[persiandentist]

Thank you marco and dentist 2013 ,
I agree with the answers , I don't think about hemidesmosome in odontoblast , and I am sure about ferrula
in the malocclusion question I have read in mc donald that we don't do skelatal cl II in primary , but we have to correct the cross bite as saoon as possible ,
but unfortunately I don't have the exact answers
that

hi marco 09,
almost all of ur answers seems rite to me excetp the
1. odontoblast gap junctions:- i think its A --cell to cell junction
just Word Gap gives the notion of lateral cell communication

and in the last question its B---it should have adequate ferrule effect or else the restoration is going to fail.

 

[twinklestar123]

Which of the folowing has the greatest influence on penetration?
1.comptom scatter
2.thompson scatter
3.Brewhmsstrahlung radiation

 

[persiandentist]

Dear Freinds here are some more questions , thanks in advance
Which of the following is true about noise caused by air turbine?

1. When above 75 db, it is harmful.
2. Frequency above 1000-8000 cycles/min.
3. Affects elderly individuals more than younger individuals.
4. Its use in younger teeth is contraindicated.



how to keep distal box of amalgam from being displaced proximally? Proximal retention grooves,
converge facial and lingual walls,
widen isthmus

Organism implicated on causing severe spreading abscesses include
a. Fusobacterium
b. Campylobacter
c. Enterococci
d. Bacteroid


In class 2 inlay cavity prep , axio pulpal line angle is beveled or rounded to?
a. prevent fracture
b. aid in full seating of restoration
c. prevent chipping of dentine when restoration is in function
4. permit more bulk of the permanent cementing medium to insulate the area from thermal shoc

An exchange of calcium ions between saliva and enamel is
1. affected by fluoride.
2. a component of remineralization and demineralization.
3. important in maintenance of tooth structure.
4. pH dependent.

A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above

The mixing and condensing of amalgam should produce a restoration with the
1. maximum amount of matrix and minimum original alloy particles
2. minimum amont of matrix and maximum alloy particles?

 

[persiandentist]

Dear dentist 2013 and Marco I think we are wrong in this question , cause it doesn't mention to the pattern of the growth as it was so the choice most be apposition , I think it means the pattern of the bone formation in utro that it is intramembranous in maxilla and mandible so I wil go with a
Lack of ramus height is caused by faulty development of
A. membranous bone.
B. endochondral bone.
C. Meckel’s cartilage.
D. temporomandibular joint

 

[twinklestar123]

What is the prophylactic pretreatment for a patiennt with congestive heart failure?
1.propanolol
2.quinidine
3.digitalis

 

[marco09]

Dear Freinds here are some more questions , thanks in advance
Which of the following is true about noise caused by air turbine?

1. When above 75 db, it is harmful.
2. Frequency above 1000-8000 cycles/min. ......my ans
3. Affects elderly individuals more than younger individuals.
4. Its use in younger teeth is contraindicated.



how to keep distal box of amalgam from being displaced proximally?
Proximal retention grooves, my ans
converge facial and lingual walls,
widen isthmus

Organism implicated on causing severe spreading abscesses include
a. Fusobacterium
b. Campylobacter
c. Enterococci my ans(this is the bacteria found in infected canals so that's why
d. Bacteroid


In class 2 inlay cavity prep , axio pulpal line angle is beveled or rounded to? i assume it is for metallic right if it is..... is beveled
a. prevent fracture
b. aid in full seating of restoration....my ans
c. prevent chipping of dentine when restoration is in function
4. permit more bulk of the permanent cementing medium to insulate the area from thermal shoc

An exchange of calcium ions between saliva and enamel is
1. affected by fluoride.
2. a component of remineralization and demineralization.
3. important in maintenance of tooth structure.
4. pH dependent.

A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above my ans

The mixing and condensing of amalgam should produce a restoration with the
1. maximum amount of matrix and minimum original alloy particles
2. minimum amont of matrix and maximum alloy particles?......my ans

hope you agree

 

[marco09]

hi marco 09,
almost all of ur answers seems rite to me excetp the
1. odontoblast gap junctions:- i think its A --cell to cell junction
just Word Gap gives the notion of lateral cell communication

and in the last question its B---it should have adequate ferrule effect or else the restoration is going to fail.

thanks for ansewring dentist 2013 and persiandentist

well please i found this about gap junctions and odontoblast please let me know yours thought's

A gap junction or nexus is a specialized intercellular connection between a multitude of animal cell-types.[1][2][3] It directly connects the cytoplasm of two cells, which allows various molecules and ions to pass freely between cells.The morphology of the odontoblastic cell layer in the human dental pulp was analysed using freeze-fracturing technique. Numerous intercellular junctions were found between individual odontoblasts as well as between odontoblasts and subodontoblastic cells (Hhl's cells).One gap junction is composed of two connexons (or hemichannels) which connect across the intercellular space. These junctions were of the gap junction type. Tight junctions were not observed.

that's what i thought in D🙂

 

[twinklestar123]

What is the characteristic of the reciprocal arm?
1.Flexibility
2.Stability

 

[dentist2013]

@twinklestar 123

1.Which of the folowing has the greatest influence on penetration?
1.comptom scatter
2.thompson scatter
3.Brewhmsstrahlung radiation===its produces photon and penetrates

Rest two produces secondary radiation. so they are low energy photons.
So ithink 3 should be the answer,

What is the characteristic of the reciprocal arm?
1.Flexibility
2.Stability

What is the prophylactic pretreatment for a patiennt with congestive heart failure?
1.propanolol
2.quinidine
3.digitalis

for congestive heart failure generally carvedilol, labetalol are used which are b-blockers with cardioselective a-1 blockers and quinidine is antiarrhythmitic

Here are the answers what i think, not sure though....Correct me if i am wrong

 

[dentist2013]

Hi there Persiandentist and Marco09..



how to keep distal box of amalgam from being displaced proximally?
Proximal retention grooves, my ans
converge facial and lingual walls,
widen isthmus
the answer should be occlusal dovetail......not sure though as its nto the option


In class 2 inlay cavity prep , axio pulpal line angle is beveled or rounded to? i assume it is for metallic right if it is..... is beveled
a. prevent fracture ----as it increasing the overall material of the restoration and reduces the stress concentration at sharp axiopulpal line angle
b. aid in full seating of restoration....my ans
c. prevent chipping of dentine when restoration is in function
4. permit more bulk of the permanent cementing medium to insulate the area from thermal shoc

The mixing and condensing of amalgam should produce a restoration with the
1. maximum amount of matrix and minimum original alloy particles
2. minimum amont of matrix and maximum alloy particles?......my ans


these are the answers and possible answers....correct me if m wrong.

 

[twinklestar123]

dentist2013,
thank you for the answers.

 

[persiandentist]

Hi Marco , and dentist 2013 , thanks a lot for answers
I agree with the answers exept the blue answers , I think gama phase which is the strongest is the matrix , so it will be better to have more matrix ,

 

[persiandentist]

Here are some more questions
thanks in advance
The % of specific LA which is present in the base form when injected in the t\issue whiose pH is 7.4 ininversely proportional to the pKa of that agent

a.onset if faster, duration is longer
b.onset is slower ,duration is lolnger
c.duration same onset is slower
d.onset and duration same
. what is the most definite way to distinguish amelloblastoma from OK
a.smear cytology
b.reactive light microscopy
c.reflective microscopy


in constructing upper complete denture against lower natural dentition .when we do the occlusal adjustment
A.during try appointment
B.after constructing study cast and treatment plan
C.during delivery of denture
D.after the final cast


A Dentists Refers A Patient To The Periodontist. Who Sees The Patient For Follow Up?
Genenral Dentist
General Dentist And Periodontist
Periodontist

which of the following injections have positive inspiration
1)IA 10-15%
2)akisino
3)infraorbital
4)gow gate 2%
5)mental nerve


when a dentist inserts new dentures in the patients mouth there is obvious occlusal disharmony what is the cause
1)initial vertical dimension
2)the casts are monted on wrong hinge axis

Veneer What Do You Use To Clean It After You Try It On ?
Ethanol
Hydrochloric Acid
Pumice
Phosphoric Acid

 

[dentist2013]

Hi Persiandentist
Gamma Phase is Silver tin alloy---which is strongest
Gamma I is silver - mercury-----which is matrix
GammaII is Tin -Mercury----Is the weakest and it is least cause corrosion and all stuff of amalgam..
I hoope i made it clear

 

[dentist2013]

Hi Marco09, persiandentist, twinklestar, here are some questions:- help me with them


why is it advisable to dispense the liquid component of cement of cement immediately before mixing?
a. to avoid absorption of moisture from the air
b. to avoid spreading over a large area of the slab
c. to allow tempering of the powder by the mixing slab
d. to reduce the temperature influence of the mixing slab
e. to prevent evaporation of the volatile components.


At what age are all primary teeth normally in occlusion?
a. 1.5-2.0 years
b. 2.5-3.0 years
c. 3.5-4 years
d. >4 years


Larger condensers and laterally applied condensation forces are recommended to ensure complete
condensation of which of the following amalgam types?
a. admixed
b. spherical
c. lathe-cut
d. high-copper
e. conventional


probing depth can vary based on the degree of inflammation
frequently, the reduction in probing depth obtained after initial therapy reflects this changes, rather than a
true gain in clinical attachment.
a. both statements are true
b. both statements are false
c. the first statement is true, the second statement is false
d. the first statement is false, the second is true


a major advantage to patient treatment with osseointegrated dental implants is a change in the pattern of
edentulous ridge resorption, which of the following is believed to be the reason for a more physiologic
loading of the bone
a. delayed loading
b. endosteal loading
c. sequential loading
d. progressive loading
e. mucoperiosteal loading


an 18 year old man complains of tingling in his lower lip. an examination discloses a painless, hard
swelling of his mandibular premolar region. the patient first noticed this swelling three weeks ago.
radiograph indicate a loss of cortex and a diffuse radiating pattern of trabeculae in the mass. which of the
following is the MOST likely diagnosis
a. leukemia
b. dentigerous cyst
c. ossifying fibroma
d. osteoma
e. hyperparathyroidism


increasing the amount of water in the mix of an improved gypsum die-stone will MOST likely result in
which of the following
a. more expansion and more strength
b. more expansion and less strength
c. less expansion and more strength
d. less expansion and less strength

which of the following is seen MOST frequently among temporomandibular-joint dysfunction patient
a. depression
b. psychosis
c. sociopathy
d. schizotypical behavior
e. passive-aggressive behavior

which of the following explains why the Z-plasty technique used in modifying a labial frenum is
considered to be superior to the diamond technique
a. it is less traumatic
b. it is technically easier
c. it requires fewer sutures
d. it decreases the effects of scar contracture.

 

[persiandentist]

Hi Marco09, persiandentist, twinklestar, here are some questions:- help me with them


why is it advisable to dispense the liquid component of cement of cement immediately before mixing?
a. to avoid absorption of moisture from the air
b. to avoid spreading over a large area of the slab
c. to allow tempering of the powder by the mixing slab
d. to reduce the temperature influence of the mixing slab
e. to prevent evaporation of the volatile components.


At what age are all primary teeth normally in occlusion?
a. 1.5-2.0 years
b. 2.5-3.0 years
c. 3.5-4 years
d. >4 years


Larger condensers and laterally applied condensation forces are recommended to ensure complete
condensation of which of the following amalgam types?
a. admixed
b. spherical
c. lathe-cut
d. high-copper
e. conventional


probing depth can vary based on the degree of inflammation
frequently, the reduction in probing depth obtained after initial therapy reflects this changes, rather than a
true gain in clinical attachment.
a. both statements are true
b. both statements are false
c. the first statement is true, the second statement is false
d. the first statement is false, the second is true


a major advantage to patient treatment with osseointegrated dental implants is a change in the pattern of
edentulous ridge resorption, which of the following is believed to be the reason for a more physiologic
loading of the bone
a. delayed loading
b. endosteal loading
c. sequential loading
d. progressive loading
e. mucoperiosteal loading


an 18 year old man complains of tingling in his lower lip. an examination discloses a painless, hard
swelling of his mandibular premolar region. the patient first noticed this swelling three weeks ago.
radiograph indicate a loss of cortex and a diffuse radiating pattern of trabeculae in the mass. which of the
following is the MOST likely diagnosis
a. leukemia
b. dentigerous cyst
c. ossifying fibroma
d. osteoma
e. hyperparathyroidism


increasing the amount of water in the mix of an improved gypsum die-stone will MOST likely result in
which of the following
a. more expansion and more strength
b. more expansion and less strength
c. less expansion and more strength
d. less expansion and less strength

which of the following is seen MOST frequently among temporomandibular-joint dysfunction patient
a. depression
b. psychosis
c. sociopathy
d. schizotypical behavior
e. passive-aggressive behavior

which of the following explains why the Z-plasty technique used in modifying a labial frenum is
considered to be superior to the diamond technique
a. it is less traumatic
b. it is technically easier
c. it requires fewer sutures
d. it decreases the effects of scar contracture.

Dear dentist 2013 , these are my opinion
any correction plz

 

[Endodontia]

Hey guys...

The answer to the flouride question.... it´s stannous flouride that causes staining. I came across this with the decks...

@ angiematt,

its false ---the amount of epithelial attachement improvement and reduction in pocket depth in mandibular furcations is better than maxillary----studies have proven that and its given in newman

i dont know the flouride one---lemme know if u gt tht answer
i guess it should be stannous flouride......but please do lemme know u get them..