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ORTHODONTICS NBDE PART 2
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ORTHODONTICS NBDE PART 2
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ORTHODONTICS NBDE PART 2 NEWEST 2024 ACTUALEXAM 155 QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (VERIFIED ANSWERS) |
ALREADY GRADED A+
For immature teeth, primary teeth and metal crowns which test- cold, ept, heat,
percussion - ANSWER: cold test
Child primary mo do caries t/t - 1-mod amalgam,2- MO DO amalgam,3- mo do
composite - ANSWER: MO DO amalgam
Composite compare to gic has better - good translucency, better wear - ANSWER:
better wear
. Composite indirect casting has advantage on direct composite - less polymerization,
more polymers - ANSWER: less polymerization shrinkage in the case of indirect
composite casting.Superior esthetics, higher abrasion resistance, dimensional
stability, color stability, strong bond between two adhesive surfaces,
biocompatibility with oral tissues
Porosity mostly caused by - inadequate condensation, underfiring - ANSWER:
inadequate condensation
Cl - 3 bevel - occlusal bevel & gingival butt joint, both occlusal & gingival bevel,
gingival bevel & occlusal 90 degree butt joint, no bevel - ANSWER: occlusal bevel &
gingival butt joint,better estthetics, better seal for margins, inc overalll retention,
more E surface to be bonded, easier shade selection
Pt says himself he can cope with dental treatment - Cognitive dissonance, conginitive
restructuring, operant, sensitization - ANSWER: conginitive restructuring
. Modeling - a-peer person+positive reinforcement, b-peer person+giving
information - ANSWER: peer person +positive reinforsement
Showing Child t/t on other sibling - modeling, sensitization, positive reinforcement,
operant - ANSWER: modeling
10 yrs pt primary mand molar missing which space maintainer -
a-no space maintainer required,
b-band & loop,
c- distal shoe
d-removable acrylic - ANSWER: A- no space maintainer required
5yrs missing second molar missing - Distal shoe true / false - ANSWER: true -prevents
mesial dripping
,Band & loop has nt feature -
a-vertical stop for opposite teeth,
b-causes decalcify after bands looses cemented,
c-plaque accumulation - ANSWER: A-vertical stop for opposite teeth
. Primary incisor 5mm intrude -
a-observation,
b- splint,
c-reposition,
d-splint & reposition - ANSWER: A- observation
Caries most on primary teeth - distal of first molar, distal of second molar - ANSWER:
distal of second molar
. Good sugar replace in high caries - xylitol, sorbitol - ANSWER: xylitol
. Vertical height of face divided into - 3rd, 5th - ANSWER: vertical -5, horizontal 3
Bisphosphanate since 6 months t/t- coronectomy & seal the roots, extn - ANSWER:
rct first
Bleaching - external resorption, internal, alveolar bone formation, hypercementosis -
ANSWER: external resorption
Distance from xray- 6 fee - ANSWER: true
Angle cl - 1 - mesiobuccal cusp of first molar of max in buccal groove of mand -
ANSWER: true
4mm exposure -
a-gold foil suture,
b-flap,
c- leave it
d- antibiotics - ANSWER: <2mm leave
2-6mm figure of 8
>7mm flap
Rotation - articular disc & condyle - ANSWER: true
. Isolated Expose root surface covered by soft tissuse -
a-fenestration,
b-dehiscence - ANSWER: fenetration
. Immunoglobin in myeloma - m spike - ANSWER: true
Mature plaque - 4-7 days - ANSWER: true
,most porcelain liable to fracture:
a.PFM
b.zirconia
c. pressed leuc - ANSWER: pressed leuc
mand incisors crowding 3mm at 8 years:
A.grind distal of primary mand canines
B.extract primary mand canines
C.Lingual arch and observe - ANSWER: lingual arch and observe
codeine does all except:
A.mydriasis
B.miosis
C.Tachycardia
D.restlessness - ANSWER: mydriasis
Xerostomia causes all of the following except:
A.smooth surface caries
B.candiosis
C.leukoplakia
D.salivary gland infection - ANSWER: leukoplakia
oral cancer more common in:
hispanic females
asian females
black males
white males - ANSWER: white males
cleft lip and palate 1 every
300
700
1,100
1,500 - ANSWER: 700
recent research shows the relationship between periodontal disease and:
hepatitis C
alcoholism
cardiovascular disease - ANSWER: cardiovascular disease
patient has pain without swelling or fever, which pain medication:
acetamenophin (tylenol)
tylenol 3 (acetamenophin + oxycodone 30mg)
codeine - ANSWER: acetamenophin (tylenol)
28 years old patient ..tooth #1 in lingual crossbite, 32 facially inclined, how to
correct:
, cross elastics
removable hawley appliance with finger spring
fixed orthodontics extended to tooth #1
rapid palatal expansion - ANSWER: removable hawley appliance with finger spring
for children
elastics -adults
What not to do in veneer:
try in paste for shade
apply silane to inner surface
apply bonding agent
etch enamel with hydroflouric acid - ANSWER:
best way to fix diastema
direct composite restoration
veneer - ANSWER: veneer
patient has PFM crowns and amalgam restoration, apply:
1.23 % acidulated phosohate flouride
stannous flouride
5% sodium flouride
1% neutral sodium fluoride - ANSWER: 1%neutral sodium flouride
most common cell in gingival crevicular fluid:
macrophage
neutrophil
plasma cell - ANSWER: neutrophils
increasing frequency of period recalls, what effect on patient compliance:
increase pt compliance
no effect on pt compliance
if the dentist decides frequency of recalls carefully it should never be changed -
ANSWER: increase pt compliance
hypercementosis which is a common feature that involves jaw is - ANSWER: paget's
disease
hypercementosis associated with which hormonal abnormality - ANSWER: toxic
thyroid goiter, acromegaly, pituitary giagantism
ghost teeth - ANSWER: regional odontodysplasia
clinically gemination and fusion look similar T/F - ANSWER: true
the first evidence of the internal resorption appear on the crown is - ANSWER: pink
hue
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