NBDE part 2 doubts..pls clarify

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rose82

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These doubts are from released papers itself..Please clarify with how to solve them!i know they are silly...but im not getting it.

1)AT 90 kvp and 15 mpa at a target film distance of 8 inches,the exposure time is half second.Exposure time at 16 inches is??(whats the formula...?)

2)using B speed film,exposure at 3 feet is 1R.What would exposure be with D speed film at 6 feet?

3)role of plaque is most obscure in desquamative ginigivits or Juvenile periodontitis? (in juvenile perio,there is no plaque right...?)

4)for a 40 lb child,maximum no. of lidocaine cartridges with 1:100,000 epinephrine safely administered is??

5)amount of mepivacaine in 10 cc of 3% mepivacaine HCL solution is??

please help me!!Thanks in advance!And if anyone has doubts,please put it up here..so we can help each other!Need some focus!
 
These doubts are from released papers itself..Please clarify with how to solve them!i know they are silly...but im not getting it.

1)AT 90 kvp and 15 mpa at a target film distance of 8 inches,the exposure time is half second.Exposure time at 16 inches is??(whats the formula...?)

2)using B speed film,exposure at 3 feet is 1R.What would exposure be with D speed film at 6 feet?

3)role of plaque is most obscure in desquamative ginigivits or Juvenile periodontitis? (in juvenile perio,there is no plaque right...?) Sentence means that role of plaque is not clear in desquamative gingivitis or juvenile periodontitis. I see the answer as juvenile periodontitis. Because it is for sure that plaque has nothing to do with DG

4)for a 40 lb child,maximum no. of lidocaine cartridges with 1:100,000 epinephrine safely administered is?? Ans: 2.2 cartridges. (formula in pg.no182 of mosby review for ur better understanding)

  • convert the wt. into kgs(1kg=2.2lbs) 40/2.2 =18(approx)
  • multiply the kg wt with the max. dose(max dose of 2%lidocaine is 4.4mg/kg body wt.) 18x4.4=79.2mg
  • calculate the no.of mgs per cartridge(typical size of cartridge 1.8ml) 2%lidocainex10x1.8ml= 36mg
  • divide the max.dose in mgs by amt. in cartridge (1cartridge contains 36mg of lidocaine so 79.2 mg should be present in how many cartridges?) 79.2/36=2.2 cartridges

5)amount of mepivacaine in 10 cc of 3% mepivacaine HCL solution is?? according to the above formula it should be 3x10x10=300mg

please help me!!Thanks in advance!And if anyone has doubts,please put it up here..so we can help each other!Need some focus!

tell me if these ans are right as per the answer key.
 
thanks a lot..will check for the key and get back!thanks a lot!i just remember that DG was the answer given for that question..thats why i had the doubt.
 
child is between 6- 10 years age..mother is concerned with signs of wear that appear on the child's maxillary anterior teeth.the dentist should recommend which of the following?(in the history it is given that child grinds his teeth at night)

stress management
soft night guard
habit breaking appliance
nothing

answer is nothing..why?
 
child is between 6- 10 years age..mother is concerned with signs of wear that appear on the child's maxillary anterior teeth.the dentist should recommend which of the following?(in the history it is given that child grinds his teeth at night)

stress management
soft night guard
habit breaking appliance
nothing

answer is nothing..why?

Options 2 and 3 are almost the same. The child is too young for stress management(think so). 6-10 yrs of age???. If the child was grinding teeth during night time it would be the deciduous molars (of course there are also perm.1st molars) which will be effected and its already time for them to exfoliate. Night guard might be useful if the habit persists after all the deciduous teeth fall off. Hence the answer could be 'nothing'. (i could not find the concrete explanations from the books for ur Q. but this how I would conclude...)
 
why composite resins are contraindicated for class 3 cavity on distal surface of canines??
 
These doubts are from released papers itself..Please clarify with how to solve them!i know they are silly...but im not getting it.

1)AT 90 kvp and 15 mpa at a target film distance of 8 inches,the exposure time is half second.Exposure time at 16 inches is??(whats the formula...?)

2)using B speed film,exposure at 3 feet is 1R.What would exposure be with D speed film at 6 feet?

3)role of plaque is most obscure in desquamative ginigivits or Juvenile periodontitis? (in juvenile perio,there is no plaque right...?)

4)for a 40 lb child,maximum no. of lidocaine cartridges with 1:100,000 epinephrine safely administered is??

5)amount of mepivacaine in 10 cc of 3% mepivacaine HCL solution is??

please help me!!Thanks in advance!And if anyone has doubts,please put it up here..so we can help each other!Need some focus!
1)AT 90 kvp and 15 mpa at a target film distance of 8 inches,the exposure time is half second.Exposure time at 16 inches is??(whats the formula...?)
Ans - 1/8 sec

2)using B speed film,exposure at 3 feet is 1R.What would exposure be with D speed film at 6 feet?

3)role of plaque is most obscure in desquamative ginigivits or Juvenile periodontitis? (in juvenile perio,there is no plaque right...?)
Ans - Desquamative gingivitis

4)for a 40 lb child,maximum no. of lidocaine cartridges with 1:100,000 epinephrine safely administered is??

5)amount of mepivacaine in 10 cc of 3% mepivacaine HCL solution is??

correct me if i am rong...
 
1)AT 90 kvp and 15 mpa at a target film distance of 8 inches,the exposure time is half second.Exposure time at 16 inches is??(whats the formula...?)
Ans - 1/8 sec

how did u get this answer??can u explain

2)using B speed film,exposure at 3 feet is 1R.What would exposure be with D speed film at 6 feet?

3)role of plaque is most obscure in desquamative ginigivits or Juvenile periodontitis? (in juvenile perio,there is no plaque right...?)
Ans - Desquamative gingivitis
(we know that its juvenile perio that doesnt need a sign of plaque..then how DG?

4)for a 40 lb child,maximum no. of lidocaine cartridges with 1:100,000 epinephrine safely administered is??

5)amount of mepivacaine in 10 cc of 3% mepivacaine HCL solution is??

correct me if i am rong...

some more doubts...

5 Class II amalgam restoration has a overhang at gingival margin. This might have been caused by which of the following?
a. poor adaptation of the matrix band
b. poor carving
c. did not wedge the matrix band

is it C??​
 
why composite resins are contraindicated for class 3 cavity on distal surface of canines??

im thinking that distal of canines need not be for esthetic reason as it cant be seen plus maybe biting force required maybe more...so amalgam or gold is used
 
Please correct me if im wrong...these are my answers for following.Pls give ur inputs!!!

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. 🙂

Which of the following is the typical interocclusal distance between opposing denture teeth at the physiological rest position?
a. 0.0-0.15 mm
b. 2.0-4.0 mm 😕
c. 4.5-5.5 mm
d 6.0-8.0 mm
4 As an X-ray tube operates, electrons carry energy from the cathode to the anode into which of the following is MOST of this energy converted in the target?
a. heat
b. X ray😕
c. Magnetism
d. electricity​
e. visible light

6 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

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

13 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 😕

17 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.(answer?? )
e. it allows for closure by secondary intention
 
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occlusal sealants succeed by altering which of the following
a. the substrate
b. the bacterial types
c. the bacterial number
d. the bacterial virulence
e. the host's susceptibility🙄

10 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

11 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
 
you have given a patient o local anesthetic injection containing epinephrine. The patient feels cold and clammy and the BP goes down to 46. what has most likely occurred
a. MI b. stroke c. vasovagal attach d. heart attack

a young child dental patient has had a previous negative experience with a dental handpiece. This child expresses fear when the dentist reaches for a prophy angle to begin a cleaning. A term that best describes this phenomenon is
a. negative reinforcement
b. extinction
c. stimulus generalization 😕
d. modeling

opioid agonists act by
a. stimulating GABAergic neuron
b. increase pain threshold
c. acting as Mu receptor agonists
(B or C??....pls read this and conclude,i feel both...
http://www.med.howard.edu/pharmacology/handouts/Opioid98.htm)



 
is someone really interested in discussing these questions...because i believe they are important(recent year papers).if not,then i'll stop it.just need someone to put in their inputs too..there are no answer keys,so we'll have to find out ourselves...pls contribute🙁

309 how long after eating is the PH in the mouth significantly lower
a. 10-30 min b. 1-2 hours c. 2-4 min d. 3-6 hours e. 10-15 min

270 a 26 years old female patient states that for several years, small, red to white oral lesions have occurred irregularly. They are painful but reveals these lesions are located on alveolar non keratinized mucosa. The MOST likely diagnosis is

a. recurrent aphthous stomatitis

b. acute necrotizing ulcerative gingivitis

c. recurrent herpes labialis

d. acute herpetic gingivostomatitis

271 a mandibular first molar crown is severely decayed due to caries. Each of the following procedures can be used to remove this tooth EXCEPT one. Which one is this EXCEPTION

a. using a cowhorn forceps

b. removing the thin lingual cortical plate of bone

c. elevating the root sections with an east-west elevator

d. reflecting a modest buccal flap and removing the buccal bone

293 which of the following is used in restored a small portion of a mandible
a. silastic b. tantalum c. homogenous bone d. autogenous bone

291 what is the advantage of sagittal split osteotomy over the transoral vertical subcondylar osteotomy
a. correct a mandibular protrusion
b. it is safer and in the operation room and less painful
c. correct mandibular retrognathia
d. correct mandibular prognathism and apertognathia
e. all of the above
f. a,c, and d only

273 which of the following is the treatment of choice for lidocaine-induced seizures

a. diazepam
b. naloxone
c. epinephrine
d. flumazenil
e. succinylcholine

which of the following is the MOST common postoperative problem associated with mandibular sagittal-split osteotomies
a. infection

b. TMJ pain

c. Periodontal defects

d. Devitalization of teeth

e. Neurosensory disturbances
246 Which of the following exhibits the MOST personal behavior by the dentist
A. leaning toward the patient

B. facing directly toward the patient

C. being seated 2 feet from the patient

D. touching the patient gently on the arm
Initial instrumentation for the biomechanical preparation of a vital tooth should begin at the canal orifice and should end at the
a. radiographic apex

b. cementodentinal junction

c. cementoenamel junction

d. cement pulpal junction​

 
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biologic changes in the aging patient affect both pharmacokinetics and pharmacodynamics of drugs, which in turn, are manifested as each of the following EXCEPT one, which one is this EXCEPTION

a. decreased renal excretion

b. increased plasma protein binding

c. increased half lives of some drugs

d. decreased volume of distribution and sequestration of drug in body fat








Establishing drainage is an important aspect of emergency treatment for an acute apical abscess. An equally important aspect is

a. adjusting the occlusion

b. prescribing systemic antibiotic

c. prescribing appropriate analgesics

d. introducing antimicrobial medicaments into the pulp space

(B or D???)

A cast gold restoration might be indicated for the replacement of a faulty amalgam to obtain

a. better margin

b. more ideal contours 😕

c. less trauma to the pulp

d. less removal of tooth structure

which of the following abnormal findings is diagnostic of a trochlear nerve dysfunction

a. proptosis

b. dilated pupil

c. eyes fail to move laterally

d. eyes fail to move down and out

238 a 5 years old child has a posterior unilateral crossbite that is accompanied by a functional shift of the mandible. When should this crossbite be corrected

a. immediately without waiting for the eruption of permanents first molar 🙂

b. when all the primary teeth have exfoliated

c. after the permanent first molars have fully erupted

d. when the child is approximately 9 years old


239 stress and illness are often related. The BEST description of their relationship is which of the following
a.stress is a primary cause of illness

b. illness is an adaptation to stress

c. stress is psychological

d. stress is contributory to illness and illness is usually stressful 😕

a patient complains that a tooth with a recently placed large MOD restoration is tender to mastercation and exhibits occasional thermal sensitivity. Which of the following is the MOST likely cause

a. microleakage

b. recurrent caries

c. gingival recession

d. premature occlusion
(microleakage or recurrent caries??)



 
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some more doubts...

5 Class II amalgam restoration has a overhang at gingival margin. This might have been caused by which of the following?
a. poor adaptation of the matrix band
b. poor carving
c. did not wedge the matrix band

is it C??​

Ans: a
 
.
.
.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.👍.
.
Which of the following is the typical interocclusal distance between opposing denture teeth at the physiological rest position?
a. 0.0-0.15 mm
b. 2.0-4.0 mm👍
c. 4.5-5.5 mm
d 6.0-8.0 mm

4 As an X-ray tube operates, electrons carry energy from the cathode to the anode into which of the following is MOST of this energy converted in the target?
a. heat 👍yes, x-rays are produced but most of the energy is released in the form of heat, very less energy gets converted to x-rays
b. X ray
c. Magnetism
d. electricity
.
.e. visible light .
.6 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
.[/quote]

biologic changes in the aging patient affect both pharmacokinetics and pharmacodynamics of drugs, which in turn, are manifested as each of the following EXCEPT one, which one is this EXCEPTION

a. decreased renal excretion

b. increased plasma protein binding
???😕

c. increased half lives of some drugs

d. decreased volume of distribution and sequestration of drug in body fat

Establishing drainage is an important aspect of emergency treatment for an acute apical abscess. An equally important aspect is
a. adjusting the occlusion
b. prescribing systemic antibiotic
c. prescribing appropriate analgesics
d. introducing antimicrobial medicaments into the pulp space

(B or D???) The answer for this question was complete debridement of the necrotic tissue. But I see there is no such option. Could u check the options again. If these are the new set of options then I would go with ans:a. Did the question also mention fever, lymphadenopathy etc. Then we can think of antibiotics(ans:b)

A cast gold restoration might be indicated for the replacement of a faulty amalgam to obtain

a. better margin

b. more ideal contours 👍

c. less trauma to the pulp

d. less removal of tooth structure

which of the following abnormal findings is diagnostic of a trochlear nerve dysfunction
.
..(remember SO4 - LR6).
.
a. proptosis

b. dilated pupil

c. eyes fail to move laterally


d. eyes fail to move down and out

238 a 5 years old child has a posterior unilateral crossbite that is accompanied by a functional shift of the mandible. When should this crossbite be corrected

a. immediately without waiting for the eruption of permanents first molar
👍

b. when all the primary teeth have exfoliated

c. after the permanent first molars have fully erupted

d. when the child is approximately 9 years old


239 stress and illness are often related. The BEST description of their relationship is which of the following
a.stress is a primary cause of illness

b. illness is an adaptation to stress

c. stress is psychological

d. stress is contributory to illness and illness is usually stressful 👍

.
 
Last edited:
.a patient complains that a tooth with a recently placed large MOD restoration is tender to mastication and exhibits occasional thermal sensitivity. Which of the following is the MOST likely cause

a. microleakage

b. recurrent caries

c. gingival recession

d. premature occlusion 👍 its the recent large restoration
(microleakage or recurrent caries??)

309 how long after eating is the PH in the mouth significantly lower
i think it has to be specific what type of food one eats. Considering the carbohydrate diet my answer would be (e)
a. 10-30 min b. 1-2 hours c. 2-4 min d. 3-6 hours e. 10-15 min 👍

270 a 26 years old female patient states that for several years, small, red to white oral lesions have occurred irregularly. They are painful but reveals these lesions are located on alveolar non keratinized mucosa. The MOST likely diagnosis is

a. recurrent aphthous stomatitis
..👍..

b. acute necrotizing ulcerative gingivitis

c. recurrent herpes labialis

d. acute herpetic gingivostomatitis

271 a mandibular first molar crown is severely decayed due to caries. Each of the following procedures can be used to remove this tooth EXCEPT one. Which one is this EXCEPTION

a. using a cowhorn forceps

b. removing the thin lingual cortical plate of bone 👍any case lingual bone should not be hamperred

c. elevating the root sections with an east-west elevator

d. reflecting a modest buccal flap and removing the buccal bone

293 which of the following is used in restored a small portion of a mandible
a. silastic b. tantalum c. homogenous bone👍 d. autogenous bone

291 what is the advantage of sagittal split osteotomy over the transoral vertical subcondylar osteotomy
a. correct a mandibular protrusion
b. it is safer and in the operation room and less painful
c. correct mandibular retrognathia
d. correct mandibular prognathism and apertognathia
e. all of the above
f. a,c, and d only 👍
pls confirm this answer

273 which of the following is the treatment of choice for lidocaine-induced seizures

a. diazepam 👍
b. naloxone
c. epinephrine
d. flumazenil
e. succinylcholine
.
.which of the following is the MOST common postoperative problem associated with mandibular sagittal-split osteotomies
a. infection

b. TMJ pain

c. Periodontal defects

d. Devitalization of teeth
.???..

e. Neurosensory disturbances 👍.
.chances of injuring IAN when care not taken..

246 Which of the following exhibits the MOST personal behavior by the dentist
A. leaning toward the patient

B. facing directly toward the patient

C. being seated 2 feet from the patient

D. touching the patient gently on the arm 👍.
.
.
.
 
Last edited:
.Initial instrumentation for the biomechanical preparation of a vital tooth should begin at the canal orifice and should end at the
a. radiographic apex

b. cementodentinal junction

c. cementoenamel junction

d. cement pulpal junction 👍
.
.
you have given a patient o local anesthetic injection containing epinephrine. The patient feels cold and clammy and the BP goes down to 46. what has most likely occurred
a. MI b. stroke c. vasovagal attack👍 d. heart attack

a young child dental patient has had a previous negative experience with a dental handpiece. This child expresses fear when the dentist reaches for a prophy angle to begin a cleaning. A term that best describes this phenomenon is
a. negative reinforcement
b. extinction
c. stimulus generalization 😕??
d. modeling

opioid agonists act by
a. stimulating GABAergic neuron
b. increase pain threshold
c. acting as Mu receptor agonists 👍
What is the 4th option? Just wondering is there is also b&c as one of the options. Because the ultimate result of apioid agonist acting is increase in pain threshold
(B or C??....pls read this and conclude,i feel both...
http://www.med.howard.edu/pharmacology/handouts/Opioid98.htm)
yes, the example given is causing confusion here
.
.occlusal sealants succeed by altering which of the following
a. the substrate
b. the bacterial types
c. the bacterial number
d. the bacterial virulence
e. the host's susceptibility looks like this is only the possible answer👍

10 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

11 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 .
.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 .
.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
.
.
.
 
.13 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 👍yes need explanation for this to be the right answer.
.17 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.(answer?? )👍sure this is the answer but how? could not think beyond the sentence itself. Z-plasty has little or no scar unlike in diamond technique, i guess so
.
.e. it allows for closure by secondary intention.
Correct me if i am wrong. hey rose, do you have the answer key with you? If yes pls post the correct answers here. I can find the explanations for atleast some of them if not for all.
(**I should have known that only 10 characters are allowed in one message.** :laugh:)
 
hi 13911(is that the correct number..coz im typing without seeing the posts:laugh:),thanks for the reply...i happened to find an answer key later yesterday...though its not an official one...so here are some of the answers,rest of ur answers are correct

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

occlusal sealants succeed by altering which of the following
a. the substrate 🙂
b. the bacterial types
c. the bacterial number
d. the bacterial virulence
e. the host's susceptibility

a young child dental patient has had a previous negative experience with a dental handpiece. This child expresses fear when the dentist reaches for a prophy angle to begin a cleaning. A term that best describes this phenomenon is
a. negative reinforcement
b. extinction
c. stimulus generalization 👍
d. modeling

Initial instrumentation for the biomechanical preparation of a vital tooth should begin at the canal orifice and should end at the
a. radiographic apex

b. cementodentinal junction 🙂

c. cementoenamel junction

d. cement pulpal junction

how long after eating is the PH in the mouth significantly lower
a. 10-30 min🙂(dont know why...but this was given by somebody)
b. 1-2 hours c. 2-4 min d. 3-6 hours e. 10-15 min

which of the following abnormal findings is diagnostic of a trochlear nerve dysfunction

a. proptosis

b. dilated pupil

c. eyes fail to move laterally 👍(remember SO4 - LR6)

d. eyes fail to move down and out

(are u sure about this one?its a function of superior oblique..and cnt remember SO functions😡)

2 other q's whch u asked to confirm...i dont know)...anyway,thanks for the answers...really its tough to find someone discuss the questions!!

about die stone(less exp,less strenth),i read it in a dental text...if u want i can give the matter0

about the z plasty,i read some article on net and found that its main purpose is to avoid scar contracture..so thats the answer.

WHAT ARE the problems encountered while performing CPR?
 
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im thinking that distal of canines need not be for esthetic reason as it cant be seen plus maybe biting force required maybe more...so amalgam or gold is used

im sorry for this answer...its not the right one...the right one is-
composites cant maintain the MD dimension.


When dealing with furcation, Guided tissue regeneration best used with Osseointegrated bone graft. Prognosis of tooth with GTR is better in Mx molar than with Mnd molar.
True or False of each statement
1st statement is true...2nd one??

Which is the least likely to cause bacterial endocarditis?
Extraction
Scaling and Root Planing
Probing
Adult Prophy
Root Canal Therapy
c or d??

Which space would cause infection in the Mediastinum?

which flouride causes staining of teeth?.....is it APF?
which flouride is used mostly in toothpastes?
 
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case based-

child is 4 yr 3 months and drinks water with less than 0.3 ppm flouride and brushes teeth with flouride toothpaste.


How much additional systemic sodium fluoride should this child ingest per day?
  1. A) 0.25 mg
    B) 0.5 mg
    C) 1.1 mg
    D) 2.2 mg
    E) None
  1. 3-6 years child with 0.3 ppm consumption shd actually have additional 0.25ppm right...but answer is 2.2 mg...pls explain how?
 
case based-

child is 4 yr 3 months and drinks water with less than 0.3 ppm flouride and brushes teeth with flouride toothpaste.



How much additional systemic sodium fluoride should this child ingest per day?
  1. A) 0.25 mg
    B) 0.5 mg
    C) 1.1 mg
    D) 2.2 mg
    E) None
  1. 3-6 years child with 0.3 ppm consumption shd actually have additional 0.25ppm right...but answer is 2.2 mg...pls explain how?

You can't give a child 0.xx ppm. ppm is not a weight unit. you give him 0.xx mg.

Where did you get the 0.25 from ? The chart says B) 0.5 mg. If the key says 2.2 then its wrong.
 
You can't give a child 0.xx ppm. ppm is not a weight unit. you give him 0.xx mg.

Where did you get the 0.25 from ? The chart says B) 0.5 mg. If the key says 2.2 then its wrong.

sorry..its my mistake about the 0.25..i agree its 0.5 mg...but the answer given in the key is 2.2..there was an explanation too,which i couldnt understand.
 
hi 13911(is that the correct number..yes, u r right, rose82..coz im typing without seeing the posts:laugh:),thanks for the reply...i happened to find an answer key later yesterday...though its not an official one...so here are some of the answers,rest of ur answers are correct

occlusal sealants succeed by altering which of the following
a. the substrate 🙂 sealants altering the substrate ???
b. the bacterial types
c. the bacterial number
d. the bacterial virulence
e. the host's susceptibility

how long after eating is the PH in the mouth significantly lower
a. 10-30 min🙂(dont know why...but this was given by somebody) 10-30min has a wider range than 10-15 mins, so possible
b. 1-2 hours c. 2-4 min d. 3-6 hours e. 10-15 min

which of the following abnormal findings is diagnostic of a trochlear nerve dysfunction

a. proptosis

b. dilated pupil

c. eyes fail to move laterally 👍(remember SO4 - LR6)

d. eyes fail to move down and out

(are u sure about this one?its a function of superior oblique..and cnt remember SO functions😡) http://en.wikipedia.org/wiki/Superior_oblique_muscle check 'SOLID' under the heading mnemonic

2 other q's whch u asked to confirm...i dont know)...anyway,thanks for the answers...really its tough to find someone discuss the questions!! my pleasure, hope we continue. Good Luck! I haven't started any Qs frankly to post my doubts. Will surely do that ones I start with Qs.

about die stone(less exp,less strenth),i read it in a dental text...if u want i can give the matter0 I would love to have the material. can I have it, pls?

about the z plasty,i read some article on net and found that its main purpose is to avoid scar contracture..so thats the answer.

WHAT ARE the problems encountered while performing CPR? Most commonly, rib fractures. Also possible bruising and rarely cardiac tamponade

...
 
its not a material...i just wrote down the points from a book...

more water added-
less expansion,less strength and Setting time is increased

this is opposite for longer mixing time.
greater expansion,strength and S.T is decreased.

(reason depends on nuclei of crystallisation)

i have few doubts...

what are the contraindications for (if any )
Sedation with chloral hydrate and hydroxine in children
Sedation with oral meperidine in children
Nitrous oxide-oxygen inhalation sedation...again in which type of children?(is it an anxious child for N2O??)

thanks.
 
Regarding the Q. why composites contraindicated in class III on distal surface of canines: Hey rose82, I dont think that ur previous opinion is completely wrong. Besides that if composites cant maintain the MD dimension then it should be contraindicated on all class III cavities. I remember reading in sturdevant that it is important to maintain wide distoincisal angle on canines. I think this is something which cannot be fulfilled by composites. Hey stuntyman, what is the answer u have got?

•When dealing with furcation, Guided tissue regeneration best used with Osseointegrated bone graft. Prognosis of tooth with GTR is better in Mx molar than with Mnd molar.
•True or False of each statement
1st statement is true...2nd one?? could be false, because there are many factors to be considered to check the prognosis. Like, 1.Vertical bone loss has better prognosis with GTR than the horizontal loss. 2. converged or fused roots have less prognosis. 3. short roots have poor prognosis. 4. long root trunk is better than short root trunk. (considering all these we can not specifically say max.molar better/worse than mand.molar)

•Which is the least likely to cause bacterial endocarditis?
• Extraction
• Scaling and Root Planing
• Probing
• Adult Prophy is this not the regular scaling then the option is same as the 2nd option
• Root Canal Therapy 😕
c or d??

•Which space would cause infection in the Mediastinum? parapharyngeal space infection (will check this out once again and let u know)
•
which flouride causes staining of teeth?.....is it APF? SnF cause stains but good for root caries. APF is the best..it does not stain the teeth.
which flouride is used mostly in toothpastes? NaF
 
Thanks for the information, rose82.

About flouride supplimentation montreal is right. 2.2mg cannot be the answer. If u have found this Q. in mosby then beware there are some mistakes in it too.
 
Thanks for the information, rose82.

About flouride supplimentation montreal is right. 2.2mg cannot be the answer. If u have found this Q. in mosby then beware there are some mistakes in it too.
no,it was there in 1991 case based paper...the only paper with explanations..

thanks for the previus answers 13911!im confused btw the occlual sealants answer..host susceptibility or substrate..

in a case,shd endo be tacked before perio problems or vice versa?

a doubt...
if a patient is allergic to penicillin and codeine,what shd the dentist prescribe before extractions?

A) Meperidine 50 mg
B) Ibuprofen 400 mg
C) Aspirin 650 mg
D) Oxycodone 5 mg and acetaminophen 325 mg (Percocet®)
E) Acetaminophen 600 mg

these are q's from the previous discussion thread which were unanswered/have a doubt..pls clarify

if an odontogenic infection involves the pterygomandibular space, the most obvious clinical sign will be
a. trismus
b. facial swelling
c. swelling in the submandibular area
d. rise in the body temperature above 38C (102F)

what is the amount of floride in an kids toothpast tube.
1, 156mg
2 256mg
3, 356mg
4, 456mg.

What instrument is used for both supra/subgingival scaling.
1, currette
2, sickle scaler.
3, hoe
4, ultrasonic tips.

3)if the dental insurance is expeiring for a patient after one day and he request the dentist to finish all the treatment within one day before the insurans expired and dentist ageed to do that . what dentist is trying to do ?
a)helping the pt.
b)fraud
c)adjusting
d)?

The mechanism of adjustment to maintain the shape and proportions of bone throughout its
growth period is called
A.remodelling
B. cortical drift.
C. area relocation. .
D. translatory growth

Which gingival manifestation(s) would be expected in a patient with a blood dyscrasia?
1. Enlargement.
2. Bleeding.
3. Ulceration.
4. Atrophy.
A.1,2 and 3
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above

A patient with pain, fever and unilateral parotid swelling following a general anesthetic most likely has
A. Mumps.
B. sialolithiasis.
C. acute bacterial sialadenitis (answer given...but why?)
D. Sjögren's syndrome.
E. sarcoidosis.

With the development of gingivitis, the sulcus becomes predominantly populated by
A. gram-positive organisms. (answer??)
B. gram-negative organisms.
C. diplococcal organisms.
D. spirochetes

Mouthwashes containing commonly used systemic antibiotics make ideal mouthwashes because systemic antibiotics show little tendency toward antibiotic sensitization when used topically.
1. Both statement and reason are correct and related
2. Both statement and reason are correct but NOT related(answer?)
3. The statement is correct but the reason is NOT
4. The statement is NOT correct but the reason is an accurate statement
5. NEITHER statement nor reason is correct

5. which of the following patients should be referred for orthodontic treatment to close a diastema between maxillary central incisors?
1. an 8 yr old with no oral habits
2. a 14 yr old with no abnormal oral habits
3. 3 yr old with a 4mm overjet
4. an 8 yr old with previous thumb habit

a. 12&3 b. 1&3 c. 2&4👍 d. 4 only e. all of the above
(answer given as 2 and 4...why)

known insulin-dependent diabetic patient feels
unwell following the administration of a local
anesthetic and becomes pale and sweaty. This
condition does not respond to placing the patient in
a supine position. The most likely cause is
A. syncope.
B. adrenal insufficiency.
C. hyperglycemia.
D. hypoglycemia.
E. carotid sinus reflex

survey of the master cast shows that the 3.5 and
3.7 abutments for a fixed partial denture have
different paths of insertion with respect to 3.7. A
semi-precision attachment is chosen rather than
preparing the teeth again. Where should the male
part of the attachment ideally be located?
A. Distal of the 3.5 retainer.
B. Distal of the 3.6 pontic.
C. Mesial of the 3.7 retainer.
D. Mesial of the 3.6 pontic

Correction of an inadequate zone of attached gingiva on several adjacent teeth is best
accomplished with a/an
A. apically repositioned flap.
B. laterally positioned sliding flap.
C. double-papilla pedicle graft.
D. coronally positioned flap.
E. free gingival graft

which of the following is the treatment of choice of a 7 year old child with a non vital permanent first molar
a. apexification
b. calcium hydroxide pulpotomy
c. gutta percha root filling

A single hypoplastic defect located on the labial
surface of a maxillary central incisor is most likely
due to a/an
A. dietary deficiency.
B. endocrine deficiency.
C. tetracycline therapy.
D. trauma to the maxillary primary central
incisor.
E. high fluoride intake

A periapical infection of a mandibular third molar
may spread by direct extension to the
1. parapharyngeal space.
2. submandibular space.
3. pterygomandibular space.
4. submental space.
A. (1) (2) (3) ANS
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above

Which of the following pharmacokinetic change(s)
occur(s) with aging?
1. Absorption is altered by a decrease in the
gastric pH.
2. Metabolism is decreased by a reduced
liver mass.
3. Distribution is altered by a decrease in
total body fat.
4. Excretion is reduced because of lessened
renal blood flow.
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above.

symptoms of pain and tenderness upon palpation of the TMJ are usually associated with which of the following
a. impacted mandibular third molars
b. flaccid paralysis of the painful side of the face
c. flaccid paralysis of the non painful side of the face
d. excitability of the second division of the fifth nerve
d. deviation of the jaw to the painful side upon opening the month.

each of the following have increased blood levels due to an active metabolite except
a. diazepam😕
b. flurazepam
c. taxozin
d. oxazepam
e. chloral hydrate
 
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Please help🙁


A 6 year old has a dark brown discolouration of his maxillary cental incisor.The discoloration started following trauma with a facial sinus tract.Treatment?
a.extraction
b.pulpectomy
c.pulpotomy
d.direct capping

ans is extraction....why not pulpectomy??

adult healthy patient has a marked indurated swelling.temp is 100 F and been in pain for 24 hours.percussion of max cental incisor causes discomfort as does palpated at its apex.Pulp vitality tests are negative for this tooth,control teeth within normal limits. A radiograph reveals that the max right incisor has a deep unbased restoration and wide PDl space.what is the emergency treatment?

antibiotic and analgesic.Initiating RCT when the symptoms subside
debriding the RC of the incisor and antibiotics,analgesics

answer is the 2nd option.why not the first...as there is an indurated swelling,we would rather give antibiotics and then RCT right?

Thanks
 
Please help🙁


A 6 year old has a dark brown discolouration of his maxillary cental incisor.The discoloration started following trauma with a facial sinus tract.Treatment?
a.extraction
b.pulpectomy
c.pulpotomy
d.direct capping

ans is extraction....why not pulpectomy??

adult healthy patient has a marked indurated swelling.temp is 100 F and been in pain for 24 hours.percussion of max cental incisor causes discomfort as does palpated at its apex.Pulp vitality tests are negative for this tooth,control teeth within normal limits. A radiograph reveals that the max right incisor has a deep unbased restoration and wide PDl space.what is the emergency treatment?

antibiotic and analgesic.Initiating RCT when the symptoms subside
debriding the RC of the incisor and antibiotics,analgesics

answer is the 2nd option.why not the first...as there is an indurated swelling,we would rather give antibiotics and then RCT right?

Thanks

Q1. Ans:extraction
6 yr old...central incisor...its obviously a deciduous one. If it was a 7yr old then the ans. would have been pulpotomy. 10yr old then would be pulpectomy. (root apex would have completed)

Q2. Ans:first let the pressure out (initiate RCT) This will relieve the pain and lets the infection out.(emergency treatment is over) Next prescribe antibiotics, analgesics and clear root canal, file, fill and close...thats it.
 
in a case,shd endo be tacked before perio problems or vice versa? Ideally perio comes first but depends on different case senarios. Like the acute pain with swelling case in the above post, then endo should be first.

a doubt...
if a patient is allergic to penicillin and codeine,what shd the dentist prescribe before extractions?

A) Meperidine 50 mg
B) Ibuprofen 400 mg
C) Aspirin 650 mg
D) Oxycodone 5 mg and acetaminophen 325 mg (Percocet®)
E) Acetaminophen 600 mg

these are q's from the previous discussion thread which were unanswered/have a doubt..pls clarify

if an odontogenic infection involves the pterygomandibular space, the most obvious clinical sign will be
a. trismus
b. facial swelling
c. swelling in the submandibular area
d. rise in the body temperature above 38C (102F)

what is the amount of floride in an kids toothpast tube.
1, 156mg
2 256mg
3, 356mg
4, 456mg.

What instrument is used for both supra/subgingival scaling.
1, currette
2, sickle scaler.
3, hoe
4, ultrasonic tips.

3)if the dental insurance is expeiring for a patient after one day and he request the dentist to finish all the treatment within one day before the insurans expired and dentist ageed to do that . what dentist is trying to do ?
a)helping the pt.
b)fraud
c)adjusting
d)? I guess its the overbilling. I am not sure...

The mechanism of adjustment to maintain the shape and proportions of bone throughout its
growth period is called
A.remodelling
B. cortical drift.
C. area relocation. .
D. translatory growth

Which gingival manifestation(s) would be expected in a patient with a blood dyscrasia?
1. Enlargement.
2. Bleeding.
3. Ulceration.
4. Atrophy.
A.1,2 and 3
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above

A patient with pain, fever and unilateral parotid swelling following a general anesthetic most likely has
A. Mumps.
B. sialolithiasis.
C. acute bacterial sialadenitis (answer given...but why?) Inadequate anesthesia during intubation, overactive parapharyngeal reflex stimulation of the gland via parasympathetic Ns and succinylcholine-stimulated copious secretions hence the swelling.
D. Sjögren’s syndrome.
E. sarcoidosis.

With the development of gingivitis, the sulcus becomes predominantly populated by
A. gram-positive organisms. (answer??)These are the organisms present in gingival sulcus, which increase in no. during gingivitis
B. gram-negative organisms.
C. diplococcal organisms.
D. spirochetes

Mouthwashes containing commonly used systemic antibiotics make ideal mouthwashes because systemic antibiotics show little tendency toward antibiotic sensitization when used topically.
1. Both statement and reason are correct and related
2. Both statement and reason are correct but NOT related(answer?) second sentence is apt for topical antibiotic applications(mouthwashes and skin ointments dont go together)
3. The statement is correct but the reason is NOT
4. The statement is NOT correct but the reason is an accurate statement
5. NEITHER statement nor reason is correct

5. which of the following patients should be referred for orthodontic treatment to close a diastema between maxillary central incisors?
1. an 8 yr old with no oral habits
2. a 14 yr old with no abnormal oral habits
3. 3 yr old with a 4mm overjet
4. an 8 yr old with previous thumb habit

a. 12&3 b. 1&3 c. 2&4👍 d. 4 only e. all of the above
(answer given as 2 and 4...why) 14yr old has all his anteriors erupted and the diastema still present, 8yr old with pre. habit might have concerns like max.arch constriction) options 1 and 3 are perfectly normal

known insulin-dependent diabetic patient feels
unwell following the administration of a local
anesthetic and becomes pale and sweaty. This
condition does not respond to placing the patient in
a supine position. The most likely cause is
A. syncope.
B. adrenal insufficiency.
C. hyperglycemia.
D. hypoglycemia.
E. carotid sinus reflex

survey of the master cast shows that the 3.5 and
3.7 abutments for a fixed partial denture have
different paths of insertion with respect to 3.7. A
semi-precision attachment is chosen rather than
preparing the teeth again. Where should the male
part of the attachment ideally be located?
A. Distal of the 3.5 retainer.
B. Distal of the 3.6 pontic. (I guess this is the answer)
C. Mesial of the 3.7 retainer.
D. Mesial of the 3.6 pontic

Correction of an inadequate zone of attached gingiva on several adjacent teeth is best
accomplished with a/an
A. apically repositioned flap.
B. laterally positioned sliding flap.
C. double-papilla pedicle graft.
D. coronally positioned flap.
E. free gingival graft

which of the following is the treatment of choice of a 7 year old child with a non vital permanent first molar
a. apexification
b. calcium hydroxide pulpotomy
c. gutta percha root filling

A single hypoplastic defect located on the labial
surface of a maxillary central incisor is most likely
due to a/an
A. dietary deficiency. ?
B. endocrine deficiency.
C. tetracycline therapy.
D. trauma to the maxillary primary central
incisor.
E. high fluoride intake

A periapical infection of a mandibular third molar
may spread by direct extension to the
1. parapharyngeal space.
2. submandibular space.
3. pterygomandibular space.
4. submental space.
A. (1) (2) (3) ANS
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above

Which of the following pharmacokinetic change(s)
occur(s) with aging?
1. Absorption is altered by a decrease in the
gastric pH.
2. Metabolism is decreased by a reduced
liver mass.
3. Distribution is altered by a decrease in
total body fat.
4. Excretion is reduced because of lessened
renal blood flow.
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above.

symptoms of pain and tenderness upon palpation of the TMJ are usually associated with which of the following
a. impacted mandibular third molars
b. flaccid paralysis of the painful side of the face
c. flaccid paralysis of the non painful side of the face
d. excitability of the second division of the fifth nerve
d. deviation of the jaw to the painful side upon opening the month.

each of the following have increased blood levels due to an active metabolite except
a. diazepam😕(dont know)
b. flurazepam
c. taxozin
d. oxazepam
e. chloral hydrate
 
if a patient is allergic to penicillin and codeine,what shd the dentist prescribe before extractions?

A) Meperidine 50 mg
B) Ibuprofen 400 mg
C) Aspirin 650 mg
D) Oxycodone 5 mg and acetaminophen 325 mg (Percocet®)
E) Acetaminophen 600 mg

even i thought the same..but answer given was meperidine??

survey of the master cast shows that the 3.5 and
3.7 abutments for a fixed partial denture have
different paths of insertion with respect to 3.7. A
semi-precision attachment is chosen rather than
preparing the teeth again. Where should the male
part of the attachment ideally be located?
A. Distal of the 3.5 retainer.
B. Distal of the 3.6 pontic. (I guess this is the answer)
C. Mesial of the 3.7 retainer.
D. Mesial of the 3.6 pontic

is thr a theory for this...can u pls tell me whr to read orif thr r any rules?

which of the following is the treatment of choice of a 7 year old child with a non vital permanent first molar
a. apexification
b. calcium hydroxide pulpotomy
c. gutta percha root filling

can non vital teeth regenrate the apex?

thanks for the explanation of previous questions..thanks a lottttttttt🙂
 
What % of liquid in an Oxygen "E" cylinder when it is half full?
a) less than 1%
b) 25%
c) 50%
d) 95%

If anybody knows the answer pls tell me the calculation as well.

Thanks
 
Last edited:
If there is an insufficient tissue from the oral mucosa to close an alveolar cleft, the most common method for obtaining soft tissue coverage is by using
a) dermis
b) fascia lata
c) a tongue flap
d) Teflon-proplast
c) freeze-dried dura

The answer looked strange to me. Could anyone say why its preferred over other options
 
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