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NBDHE MOCK BOARD QUESTIONS AND ANSWERS
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NBDHE MOCK BOARD QUESTIONS AND ANSWERS
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NBDHE MOCK BOARD QUESTIONS AND ANSWERSWhich has the highest powder-to-water ratio?
Plaster
Type III stone
Type IV stone
Type V stone
type V (die stone)
Patients with uncontrolled diabetes might exhibit each of the following conditions
EXCEPT one.
-Generalized widening of PDL space
-Peripheral neuropathy
-Polyuria
-Retinopathy
generalized widening of PDL space
Which is the handpiece primarily used for intraoral polishing?
a. Belt-driven
b. High speed
c. Low speed
d. Porte polisher
low speed
A 10-year old exhibits mild dental fluorosis and resides in a non-fluoridated area. Which
most accurately describes the rationale for this condition?
a. Received professionally applied fluoride therapy
b. Recently moved to the area
c. Uses a daily fluoride rinse
d. Uses an over-the-counter brush-on gel daily
Uses a daily fluoride rinse
A patient has a removable partial denture which replaces the missing mandib. teeth.
Which tissue is best suited to support this appliance?
a. Alveolar mucosa
b. Lining mucosa
,c. Masticatory mucosa
d. Specialized mucosa
lining mucosa
Which is most likely the cause of erosion located on several cusps of mandibular molars
and premolars?
a. Highly-carbonated diet
b. GERD
c. Medications
d. Poor oral hygiene
Highly-carbonated diet
Tonic-clonic seizure phases are:
a. alternating spasms of rigidity and relaxation
b. typical of petit mal epilepsy
c. urinary bladder muscle spasms
d. usually limited to a single limb
alternating spasms of rigidity and relaxation
Tooth 30 presents with Class III furcation involvement. Which Gracey curette design is
best suited for scaling the mesial aspect of the distal root?
a. Gracey 5/6
b. Gracey 7/8
c. Gracey 13/14
d. Gracey 15/16
e. Gracey 17/18
Gracey 15/16
Air is used to deflect the free gingival margin in order to detect--
a. root fracture
b. smooth root surfaces
c. subgingival calc
d. supragingival calc
subgingival calc
A concentration of fluoride in the community water that offers the minimal risk of
fluorosis while still providing max protection from caries is--
a. 0.5 ppm
,b. 0.7 ppm
c. 0.17 ppm
d. 0.05 ppm
0.7 ppm
A young patient has the night time habit of thumb sucking. The hygienist will work with
this patient to break the habit. Which will have the strongest influence on this child?
a. Child's desire to quit
b. Hygienist's ability to motivate the child
c. Hygienist's attitude
d. Parent's cooperation and understanding
Child's desire to quit
Radiolucencies which can be seen on a maxillary incisor radiograph include each of the
following EXCEPT--
a. Maxillary sinus
b. Median palatine suture
c. Nasal fossa
d. Nasopalatine foramen
maxillary sinus
When the inflammatory process destroys the supporting alveolar bone first, and then
spreads laterally to the alveolar bone proper (lamina dura), which type of bone loss and
pockets will occur?
a. Horizontal/infrabony
b. Horizontal/suprabony
c. Vertical/infrabony
d. Vertical/suprabony
Horizontal/suprabony
Which describes a Gracey curet?
a. Has a blade angulated 90-100 degrees to the shank
b. Has a sharp point that can traumatize tissue
c. Has one lateral cutting edge
d. Is considered a universal curet
has one lateral cutting edge
The average loss of attachment is 2.5mm is a statement of--
, a. distribution
b. extent
c. prevalence
d. severity
extent
Which condition most significantly influences the progression of periodontal disease?
a. atherosclerosis
b. diabetes mellitus
c. lupus erythematosus
d. pregnancy
diabetes mellitus
Which is the extraoral projection used to evaluate the maxillary sinuses?
a. lateral cephalometric
b. reverse town
c. submentovertex
d. water
lateral cephalometric
Which is the water/powder ratio of dental stone?
-25 ml/100 grams
-30 ml/100 grams
-50 ml/100 grams
-75 ml/100 grams
30 ml/100 grams
Which is a protective protein surrounding viruses?
a. capsid
b. cell membrane
c. cell wall
d. core
capsid
Which of the following types of immunoglobulins does NOT cross the barrier between
mother and infant in the womb?
IgA
IgM
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