Official NBDE Part 2 Study Q & A Thread

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bansbari said:
Hi guys!
Have couple of Qs from released papers.
According to answers:

1. ???????
Best diagnosis for irreversible pulpitis - thermal test
for reversible pulpitis - electric pulp test
svetlana,

Is it correct?
I remember that it should be vise versa

2.
Most consistent canal morphology - mand PM

Isn't it max.canine?🙂

So, what's the answer?
3.
Daily cleaning of the root surface by the patient has been shown to...
answer-allow remineralization of root surface

Isn't it "cause root sensitivity"
Plaque is the main cause of root sensitivity so it is always best to remove plaque from those area and may be by doing so re mineralization occur.

Now I have some doubts....I really need someone to clear it..
1) What prospective of hue,chroma and value the Dentist can not change.
2) What is the cause of green discoloration of teeth?
Silver ans(the Q is about PFM crowm I think)
copper
Thank you so much in advance.....
Click to expand...

Hope it helps
 
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Which type of biopsy is most often used to observe the borders of a suspicious lesion -
A. Incisional
B. Excisional
C. Needle
D. Exfoliative Cytology

Shouldn't the answer be A - Incisional as it is a suspicious lesion ?

Pls help and give an explanation !
 
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dmd94 said:
Which type of biopsy is most often used to observe the borders of a suspicious lesion -
A. Incisional
B. Excisional
C. Needle
D. Exfoliative Cytology

Shouldn't the answer be A - Incisional as it is a suspicious lesion ?

Pls help and give an explanation !
Click to expand...

I think if u want to see the borders ... Excisional biopsy should be used... What us the xorrect answer?
 
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dontist said:
I think if u want to see the borders ... Excisional biopsy should be used... What us the xorrect answer?
Click to expand...

Thank you 👍 Excisional biopsy is the right answer

Few more doubts

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

2. Allergic reactions to amide-type local anesthetic
solutions are most likely caused by sensitivity to
A. lidocaine hydrochloride.
B. epinephrine.
C. methylparaben.
D. contaminants.
 
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The question is
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
I've seen both A and B as answers. Does anyone know which it is? I'm thinking B... Thanks
 
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dmd94 said:
Thank you 👍 Excisional biopsy is the right answer

Few more doubts

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

2. Allergic reactions to amide-type local anesthetic
solutions are most likely caused by sensitivity to
A. lidocaine hydrochloride.
B. epinephrine.
C. methylparaben.👍
D. contaminants.
Click to expand...


Thanks .
 
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elephants said:
The question is
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
I've seen both A and B as answers. Does anyone know which it is? I'm thinking B... Thanks
Click to expand...

I think b is the ans
 
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OM BDS said:
I think b is the ans[/QU

Please help me with this question..
How many maxillary and mandibular implants are needed for a complete denture?
Maxillary - 6
Manibular-4

or
maxillary-2
mandibular-2
or something else😕
Click to expand...
 
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adoc21 said:
OM BDS said:
I think b is the ans[/QU

Please help me with this question..
How many maxillary and mandibular implants are needed for a complete denture?
Maxillary - 6
Manibular-4

or
maxillary-2
mandibular-2
or something else😕
Click to expand...

which of the following MOST accurately explains how biofeedback works
a. it reduced cognitive dissonance
b. it stimulates the sympathetic nervous system
c. it relaz and to some extent hypnotizes the patient
d. it distracts and engages the patient in an active coping task.
e. it enables the patient to gain control of certain physiological function


when evaluating an extension-base removable partial denture several years after delivery, the dentist should apply loading forces to the base area. if an indirect retainer elevates from its rest seat under these forces, then this indicated the need to
a. tighten the clasps
b. adjust the occlusion
c. reline the base area
d. remake the partial denture
e. advise the patient to use a denture adhesive

which of the following injuries to the teeth MOST often results in pulpal necrosis
a. avulsion
b. concussion
c. lateral luxation
d. intrusive luxation
e. extrusive luxation

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.
a tissue-conditioning materials is MOST frequently used to treat which of the following conditions
a. epulis fissuratum
b. papillary hyperplasia of the candida albicans
c. traumatized mucosa caused by ill-fitting denture
d. sharp, residual, mandibular ridges occurring in molar areas
the pulpal floor is perforated during access preparation. Which of the following is the BEST course of action
a. repair the perforation immediately and continue the root canal treatment
b. continue the root canal treatment; repair the perforation at a subsequent appointment, only if associated pathosis develops
c. continue the root canal treatment; repair the perforation at a subsequent appointment
e. perform no further treatment at this time; repair the perforation and continue the root canal treatment at a subsequent appointment
in restoring a canine protected occlusion, with anterior overbite of about 2mm. The buccal cusps f posterior teeth should be flat, BECAUSE they will guide the protrusion
a. both are true
b. only the second statement is true
c. both are false
d. only the first statement is true
Click to expand...
 
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adoc21 said:
adoc21 said:
which of the following MOST accurately explains how biofeedback works
a. it reduced cognitive dissonance
b. it stimulates the sympathetic nervous system
c. it relaz and to some extent hypnotizes the patient
d. it distracts and engages the patient in an active coping task.
e. it enables the patient to gain control of certain physiological function👍


when evaluating an extension-base removable partial denture several years after delivery, the dentist should apply loading forces to the base area. if an indirect retainer elevates from its rest seat under these forces, then this indicated the need to
a. tighten the clasps
b. adjust the occlusion
c. reline the base area👍
d. remake the partial denture
e. advise the patient to use a denture adhesive

which of the following injuries to the teeth MOST often results in pulpal necrosis
a. avulsion👍
b. concussion
c. lateral luxation
d. intrusive luxation
e. extrusive luxation

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.👍

a tissue-conditioning materials is MOST frequently used to treat which of the following conditions
a. epulis fissuratum
b. papillary hyperplasia of the candida albicans
c. traumatized mucosa caused by ill-fitting denture 👍 my best guess
d. sharp, residual, mandibular ridges occurring in molar areas

the pulpal floor is perforated during access preparation. Which of the following is the BEST course of action
a. repair the perforation immediately and continue the root canal treatment👍
b. continue the root canal treatment; repair the perforation at a subsequent appointment, only if associated pathosis develops
c. continue the root canal treatment; repair the perforation at a subsequent appointment
e. perform no further treatment at this time; repair the perforation and continue the root canal treatment at a subsequent appointment
in restoring a canine protected occlusion, with anterior overbite of about 2mm.

The buccal cusps f posterior teeth should be flat, BECAUSE they will guide the protrusion
a. both are true
b. only the second statement is true
c. both are false👍
d. only the first statement is true
Click to expand...

correct me if i m wrong.......
Click to expand...
 
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[FONT=Tahoma, sans-serif]which of the following represents in the classic sign or symptom of an anterior displaced disc with
reduction
a. pain
b. closed lock
c. reciprocal click
d. temporal headache
e. decreased range of motion

when evaluating an extension-base removable partial denture several years after delivery, the dentist
should apply loading forces to the base area. if an indirect retainer elevates from its rest seat under these
forces, then this indicated the need to
a. tighten the clasps
b. adjust the occlusion
c. reline the base area
d. remake the partial denture
e. advise the patient to use a denture adhesive

current accept technique for reduced pocket depth except one, which one is exception?
a. gingivectomy
b. gingival curettage
c. S & R
d. debridement surgery
e. osseous surgery

When determining the appropriate dose of systemic fluoride supplement for a child, it is MOST
important for the dentist to consider which of the following
a. The fluoride content of the drinking water
b. the child’s diet and caries activity
c. the child ago and the fluoride content of the drinking water
d. the child’s weight and the fluoride content of the drinking water.

which of the following statements about the bacterial etiology of enamel surface dental caries is
INCORRECT
a. caries is a transmissible bacterial infection
b. the presence of S. mutans in dental plague means the patient has caries
c. pits and fissures from which S. mutans can be cultured may not become carious

a patient who takes dicumarol is probably being treated for
a. hypertension
b. angina pectoris
c. coronary infarct
d. paroxysmal tachycardia
e. congestive heart failure

the retentive tip of a clasps arm is placed in an undercut BECAUSE a flexible arm is BEST suited for
reciprocation
a. both the statement and the reason are correct and related
b. both the statement and the reason are correct but NOT related
c. the statement is correct, but the reason is NOT
d. the statement is NOT correct, but the reason is correct
e. NEITHER the statement NOOR the reason is correct

which of the following bacteria responsible for odontogenic infections are capable of adapting to either
a high or low oxygen containing environment
a. enteric organism
b. obligate anaerobes
c. facultative organism
d. synergistic organism
e. microaerophilic organism.
 
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texas1286 said:
1. Additional cured silicones (polyvinyl Siloxane) are often the materials of choice for impressions for fixed restorations. Each of the following is true about these materials except one. Which one is this exception?
a. give off ethyl alcohol during their setting reaction
b. can be poured more than once and still remain accurate
c. can be poured after 24 hours and still remain accurate<<<<<😕
d. rebound from undercuts without permanent deformation
e. may released hydrogen gas during setting
2. 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.<<<<<
3 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
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>>>> ans shd b all of the above.. any suggestion
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
7 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
8 The usual metabolic pathway of ingested fluoride primarily involves urinary excretion with the remaining portion found largely in the
a. teeth
b. muscle tissue
c. skeletal tissue>>>
d. epidermal tissue
9 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
12 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
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👍👍
14 which of the following is recommended for treating the pain of tic douloureux (trigeminal neuralgia)?
a. oxycodone
b. ibuprofen
c. carbamazepine>>>
d. hydrocortisone
e. acetylsalicylic acid
15 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
16 which of the following diagnostic criteria is the LEAST reliable in the assessment of the pulp status in the primary dentition
a. swelling
b. pulp testing>>>>
c. spontaneous pain
d. internal resorption
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.
e. it allows for closure by secondary intention
18 which of the following MOST accurately explains how biofeedback works
a. it reduced cognitive dissonance
b. it stimulates the sympathetic nervous system
c. it relaz and to some extent hypnotizes the patient
d. it distracts and engages the patient in an active coping task.>>>
e. it enables the patient to gain control of certain physiological function
19 which of the following describes clindamycin
a. inhibits cell wall synthesis
b. does not penetrate well into bony tissue
c. it usually given in combination with erythromycin
d. is effective against gram-negative bacteria only
e. is effective against most anaerobes>>>>
20 dentists usually send their cemento-metal restoration cases to dental lab for fabrication. upon receiving the cases, these technicians MOST frequently complain that the
a. margines have been ill-defined>>>
b. teeth have been insufficiently reduced
c. shades for the restorations have been inadequately described
d. impressions or models are inaccurate


please correct question marked doubt.... 🙂
Click to expand...
for question 13 i have marked the correct answer and i am pretty sure...
 
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mvyr said:
1 Decrease in which of the following causes increase in radigraphic density?
a. mA
b. Kvp
c. object film distance
d. source film distance👍
e. exposure time

2 an unconscious patient suspected of having obstracted airway. Management for patient
a. protrude the tongue, clear the pharynx,extend the neck & protrude the mandible.
b. ext. the neck, clear the pharx,prodrude the tong & m/d
c. ext. the neck, protrude the m/d & tongue, clear the pharynx
d. clear the pharynx, extend the neck, protrude the m/d & tongue👍

3. Charecter & individuality of teethare determined by
a. transleucency
b. surface texture👍
c. color
d. shape

4 Which explain why the properly desined rest on the lingual surface of canine is prefered over incisal surface
a. enamel is thicker on lingual surface
b. less leverage is exerted againest the tooth by the lingual rest👍

5 compression of acrylic into denture flask, placing the flask into processing tank at curing temprature is delayed to
a. assure complete flow of acrylic into mold
b. allow monomer to penetrate all polymer
c. establise an equalized & uniform pressure on the mold
d. allow the flask &acrylic to reach at stable tem.👍
Click to expand...

these were some questions that were posted.....here are the answers....inputs most welcomed....
 
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Qpart2 said:
[FONT=Tahoma, sans-serif]which of the following represents in the classic sign or symptom of an anterior displaced disc with
reduction
a. pain
b. closed lock
c. reciprocal click
d. temporal headache
e. decreased range of motion

when evaluating an extension-base removable partial denture several years after delivery, the dentist
should apply loading forces to the base area. if an indirect retainer elevates from its rest seat under these
forces, then this indicated the need to
a. tighten the clasps
b. adjust the occlusion
c. reline the base area
d. remake the partial denture
e. advise the patient to use a denture adhesive

current accept technique for reduced pocket depth except one, which one is exception?
a. gingivectomy
b. gingival curettage
c. S & R
d. debridement surgery
e. osseous surgery

When determining the appropriate dose of systemic fluoride supplement for a child, it is MOST
important for the dentist to consider which of the following
a. The fluoride content of the drinking water
b. the child's diet and caries activity
c. the child ago and the fluoride content of the drinking water
d. the child's weight and the fluoride content of the drinking water.

which of the following statements about the bacterial etiology of enamel surface dental caries is
INCORRECT
a. caries is a transmissible bacterial infection
b. the presence of S. mutans in dental plague means the patient has caries
c. pits and fissures from which S. mutans can be cultured may not become carious

a patient who takes dicumarol is probably being treated for
a. hypertension
b. angina pectoris
c. coronary infarct my guess...not sure
d. paroxysmal tachycardia
e. congestive heart failure

the retentive tip of a clasps arm is placed in an undercut BECAUSE a flexible arm is BEST suited for
reciprocation
a. both the statement and the reason are correct and related
b. both the statement and the reason are correct but NOT related
c. the statement is correct, but the reason is NOT
d. the statement is NOT correct, but the reason is correct
e. NEITHER the statement NOOR the reason is correct

which of the following bacteria responsible for odontogenic infections are capable of adapting to either
a high or low oxygen containing environment
a. enteric organism
b. obligate anaerobes
c. facultative organism
d. synergistic organism
e. microaerophilic organism.
Click to expand...

hey these answers are to the best of my knowledge.....please correct me if wrong
 
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tapanhp said:
pls help me answer- what is the correct sequence of extraction of maxillary molars?
Click to expand...

hey as far as i have read its 3rd molar,2nd molar then 1st molar.....i am not sure.......correct me if u have any doubt....
 
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Please contact me if you need any NBDE II study materials. I have the official kaplan course book, the decks, pharm cards, and the entire set of old exam booklets from the ADA. first come, first served guys.
 
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If nobody else has asked yet, I would love to have those for NBDE part2.
 
Last edited:
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Can any one please help me with this answer??
A surgical flap approach to periodontal pocket elimination permits
A. healing by primary intention.
B. retention of gingiva.
C. access to perform osseous recontouring.
D. All of the above.

I feel it should be D am i right??😕
 
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A gingivectomy approach to pocket elimination results in:

a.healing by primary intention
b.adequate access to correct irregular osseous contours
c.retention of all or most of attached gingiva
d.none of the above
 
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Can someone please explain the answer to this question in the OS section of the decks?

Which of the following is the primary direction of luxation for extracting maxillary deciduous molars?

Buccal
Palatal
Mesial
Distal

The decks say palatal, but I think it should be buccal.
 
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amolar said:
palatal for primary teeth, Buccal for permanent teeth.
Click to expand...

Right, but why (I know its buccal for permanant, but why palatal for primary)? I would think that if you overluxate the primary the palatal root would snap...
 
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Which of the following factors is critical for light curing composites?


1.shade of the composite
2.depth of preparation
3.distance from the light
4.temperature of the room
5.all of the above:thumb up:


my question is how does the temperature of room affect light cured composites?😕
 
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Correct me if I'm wrong, but I believe it has to do with the location of the developing permanent dentition and the direction the deciduous root moves when the primary tooth is luxated. You don't want to traumatize the developing tooth underneath which is developing lingual to the primary dentition.
 
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Decan said:
Can someone please explain the answer to this question in the OS section of the decks?

Which of the following is the primary direction of luxation for extracting maxillary deciduous molars?

Buccal
Palatal
Mesial
Distal

The decks say palatal, but I think it should be buccal.
Click to expand...



This is a direct quote from kaplan q bank explanation
"The reason is that primary molars are positioned more palatally and the palatal root is stronger than the buccal root and is less likely to fracture"
🙂

Acc to this the buccal bone is dense and luxating in this direction might fracture the buccal roots in primary molar!!!
 
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tinman831 said:
Correct me if I'm wrong, but I believe it has to do with the location of the developing permanent dentition and the direction the deciduous root moves when the primary tooth is luxated. You don't want to traumatize the developing tooth underneath which is developing lingual to the primary dentition.
Click to expand...

correct if m wrong
the developing permanent tooth bud is lingual to primary in anterior but in posterior (molars as i the question )it is always in the trifurcation beneath the primary molars!!😕
 
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Cavity liners should have a minimal thickness of

a. 1mm
b. 1.5 mm
c. 15mm
d. 125 mm

According with the ada realease test the correct answer is C.. but this doesn't sound right... any inputs??
 
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Lucky5 said:
Cavity liners should have a minimal thickness of

a. 1mm
b. 1.5 mm
c. 15mm
d. 125 mm

According with the ada realease test the correct answer is C.. but this doesn't sound right... any inputs??
Click to expand...
Hi Dear
i think the correct answer is c=15 mm 100% SURE
there are 2 kind of liners solutions =5mm & suspensions = 15 mm(DYCAL)

😍😍😍😍
PLEASE SHARE US YOURS EXPERIENCES
 
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A patient with a complete upper denture and bilateral lower partial denture presents in your office for the first time in 5 years. what can you expect to find after 5 years without RPD maintenance?

A. loss of VDO and retrognathic facial appareance
B. Decrease in VDO and prognathic facial appareance
C. Premature post contacts and retrognatic facial app.
D. Increase in VDO and premature post contacts
E. Decrease in VDO and prognathic facial app
 
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rayman said:
Hi Dear
i think the correct answer is c=15 mm 100% SURE
there are 2 kind of liners solutions =5mm & suspensions = 15 mm(DYCAL)

😍😍😍😍
PLEASE SHARE US YOURS EXPERIENCES
Click to expand...

Cavity liners: solution 1-5 microns (not mm), and Dycal 20-25 microns. :laugh:
 
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Lucky5 said:
A patient with a complete upper denture and bilateral lower partial denture presents in your office for the first time in 5 years. what can you expect to find after 5 years without RPD maintenance?

A. loss of VDO and retrognathic facial appareance
B. Decrease in VDO and prognathic facial appareance
C. Premature post contacts and retrognatic facial app.
D. Increase in VDO and premature post contacts
E. Decrease in VDO and prognathic facial app
Click to expand...

I am not sure of the answer but here is what i consider by method of elimination.
i would choose the ans as B/E.
1) there won't be increase in vdo -that would eliminate D
2)combination in A does not go together i.e.loss of vdo n retrognathic app-eliminate A
3)kelly syndrome is common for such cases where there is supra eruption of ant mandi teeth and bone loss in maxillary ant.hence there are no chances of posterior premature contacts.-eliminate C.
B and E are same!!!🙂
it is just a guess ...correct if m wrong!!!
 
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The portion of an artificial tooth that is found only in porcelain ant teeth is
1.pin
2.collar
3.finish line
4.diatoric
5.none of the above
 
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pls ans

Giving nitrous oxide to kids and they say they feel nauseas what do you do?

turn it off and give 100%oxygen.
turn nitrous oxide down 10-20%,
turn it down all the way and remove the masketc
 
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Hello Guys,
I am looking for a study partner for NERB exam, actually i will be taking exam in Dec😉
So pls msg me if anybody is interested🙂
 
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sepia said:
pls ans

Giving nitrous oxide to kids and they say they feel nauseas what do you do?

turn it off and give 100%oxygen.
turn nitrous oxide down 10-20%,
turn it down all the way and remove the masketc
Click to expand...


Giving nitrous oxide to kids and they say they feel nauseous what do you do?
a) turn it off and give 100% oxygen.
b) turn nitrous oxide down 10-20%
c) turn it down all the way and remove the mask you can't do this because you ALWAYS have to give 100% O2 for 5 mins to prevent diffusion hypoxia
 
Last edited:
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Cavity Liners have a minimal thickness of?
A) 1mm
B) 1.5mm
C)15 mm
D) 125mm

In the answer say is 15mm? Is it correct? I though it was mínimum 1mm
 
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Help! NBDE Part 2 Pharmacology
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