Sunday, 19 July 2015
MCQs dental pulp complex
Q
# 01 Primary dentine
A. primary dentine tubules structure is
irregular.
B. it show slower deposition
C. it is not deposited evenly.
D. its tubules get sclerose very often.
E. it shows rapid deposition.
Key E
Q
#02 Incremental line of Von ebner in dentine occurs as a
A. one day cycle.
B. two day cycle
C. three day cycle.
D. six day cycle
E. five day cycle.
Key E
Q
#03 Pulp is a
A.
hard connective tissue that supports the dentine.
B.
has a poor nerve supply
C. it is derived from
dental organ.
D.
pulp become more cellular with age.
E.
it mainly consists of type 1 and type 3 collagen fibres.
Key E
Q
# 04 Regarding microscopic zones of pulp
A. increase density of cells are found in
subodontoblastic layer
B. plexus of Rashkow is present in cell rich
zone
C. secondary dentine is present in pulp core.
D. plexus of Rashkow is present in cell free
zone.
E. cell rich zone contain cell bodies of
odontoblast.
Key D
Q
# 05 Cells of dental pulp
A. fibroblasts increase in number with advancing
age.
B. pulp tissue mainly consist of type 4 collagen
fibres.
C. fibroblasts are the most numerous cells of
radicular pulp
D. odontoblasts are not included in the cells of
dental pulp.
E. fibroblasts maintain and forms the pulp
matrix.
Key E
Q
# 06 The vitality of dentin is dependent upon the?
A. Dentinal tubules.
B. Odontoblast.
C. Osteoblast.
D. Cementoblast
E. Nerve supply of the pulp.
Key
B
Q
# 07 With the age following changes occurs in the pulp except?
A. Number of cell decrease with the age.
B. Number of cell increase with the age
C. Pulp stones increases
D. Volume of pulp chamber & root canal
decreases
E. Calcification in the wall of blood takes
place.
Key B
Q
# 08 The tooth which is used as guide spot in occlusion?
A. Incisors
B. Canine
C. Premolar.
D. Molar.
E. Third Molar.
Key B
Q
# 09 True pulp stones exhibits structure of
A. Concentric layer of calcification.
B. Tubular arrangement like in dentin
C. Homogenous mass of calcification.
D. Cells of remnant of hertwig’s epithelial root
sheath
E. Cementum
Key B
Q
# 10 Degradation of the fibers in the pulp takes place by?
A. Odontoblast.
B. Fibroblast.
C. Cementoblast
D. Osteoblast.
E. Osteoclast
Key B
Q
# 11 All of the following are true regarding primary dentin except?
A.
Most of the tooth is formed by primary dentin.
B.
Out lines the pulp chamber.
C.
Also called circumpulpal dentin
D.
Primary dentin lines the inner most pulpal portion.
E.
The outer layer is called mantle dentin.
Key D
Q
# 12 The predominant inorganic element of dentin is?
A.
Flourine
B.
Calcium
C.
Phosphorus.
D.
Sodium.
E.
Chloride
Key B
Q
# 13 The mineral content is highest in?
A.
Peribubular dentin / intra tubular dentin
B.
Intertubular dentin.
C.
Inter globular dentin.
D.
Pre dentin.
E.
Primary dentin.
Key A
Q
# 14 The total number of pulp organs in every person is
A.
40
B.
45
C.
50
D.
52
E.
51
Key D
Q
# 15 Close to the apex of the adult tooth, the odontoblasts appers like
osteobasts,
They can be recognized as odontoblasts.
A.
Due to their ovoid shape
B.
Due to their spindle shape.
C.
Due to their processes extending into the dentin
D.
Due to their large nucleus
E.
Due to basal portion of nucleus
Key C
Q
# 16 Rich nerve plexus in the subodontic ell free zone is known as
A.
Parietal plexus
B.
Plexus of Rashkow
C.
Circum odontoblasts plexus
D.
All of the above
E.
Marginal plexus
Key B
Q
# 17 Age changes in dental pulp.
A.
cellular component increase in number
B.
pulp shows calcification that eases the endondontic treatment.
C.
Pulp chamber decrease in size.
D.
regeneration of myelinated and non myelinated nerve occurs.
E.
less amount of secondary dentine is found.
MCQs pulp
Q.No.1 Which of the following types of dentine is
likely to have the highest mineral
Content
A.
Interglobular
B.
Intertublar
C.
Mantle
D.
Secondary
E. Slerotic
Q.No.2. Cell that are responsible for
the production of reactive dentine are most likely to
be present in which following areas of the pulp
A.
Around
blood vessels
B.
Cell
free zone
C.
Cell
rich zone
D.
Pulp
core
E. Pulp
periphery
MCQs Dental pulp
Q.No.1.Matrix vesicles are present
during:
A.
Initial
mineralization of bone
B. The
initial mineralization of dentin.
C.
The
initial mineralization of enamel.
D.
The
initial mineralization of cementicles.
E.
The
initial mineralization of denticles.
Q.No.2. Obliteration of
the dentinal tubules by mineral deposits:
A. First Occurs in predentin.
B.
Is seen in sclerotic and transparent
dentine
C. Normal process occur during
odontogenesis.
D. Occurs only when the dentin becomes
exposed to the oral fluids.
E. Produces dead tracts.
Q.No.3. Amelogenesis and
dentinogenesis are similar in which respect?
A. Both processes involve the secretion
of collagenous fibers impregnation with hydroxyapatite crystals.
B.
Both processes involve maturation with
hydroxyapatite crystals.
C. Both processes start simultaneously at
the early crown stage.
D. Both processes continue throughout the
life of the tooth.
E. Both processes form structures of same
inorganic content.
Q.No.4. Weil’s zone in
pulp organ is:
A. Cell rich zone
B. Cell free zone
C. Neurovascular zone
D.
Odontoblastic zone
E. Present near apical foremen.
Q.No.5. Average primary
dentin formation per day is:
A.
4µm
B. 6µm
C. 8µm
D. 10µm
E. 12µm
Q.No.6. Pulp tissue in
radiographs in observed as:
A. Opaque
B. Radio-opaque
C.
Radio-lucent
D. Transparent
E. Translucent
Q.No.7. Odontoblasts
differentiate from the cells of.
A. Cells of dental follicle.
B. Dental organ
C. Outer enamel epithelium
D.
Undifferentiated ectomesenchymal cells
E. None of the above.
Q.No.8. With age,
reduction in sensitivity is due to.
A. Blocking of dentinal tubules
B. Dead tract formation
C. Formation of sclerotic dentin
D. Formation of tertiary dentine
E.
Loss & degeneration of my lineated
& un my lineated axons
Q.No.9. Theintertubular
dentine consist of
A.
Type I collagen
B. Type V collagen
C. Type III collagen
D. Type VII collagen
E. Type I and type V collagen
Q.No.10. Lateral
branching of the main root canal in the apical third or furcation area
of root is called.
A. Accessory canals
B. Accessory formina
C.
Accessory canal or lateral canal
E. Apical foramen
Q.No.11. Which cells are
involve in the resorption of dental hard tissue;
A. Odontoblast
B. Osteoclast
C.
Odontoclast
D. Osteoblast
E. Ameloblast
Q.No.12. Major producers
of collagen are.
A.
Mesenchymal cells
B. Epithelial cells
C. Endothelial cells
D. Ectodermal cells
E. Neural crest cells
Q.No.13. A Major
difference between secondary and primary dentine is that:
A. There is no predentine.
B. There is no hydroxyapatite
C. There are no collagen fibers.
D. Tubules pass in wavier course through
secondary dentine
E.
Both types develops before root
completion.
Q.No.14. Primary dentin
differs from both secondary and reparative dentin in that.
A. Its matrix is calcified
B. Its inorganic component is
hydroxyapatite.
C.
It has a greater number of tubules per
unit area.
D. It is produced by mesenchyme cells
E. It form in response to stimulus
Q.No.15. Which of the
following is true of peritubular dentin it.
A. Is less mineralized than intertubular
dentin
B.
Is also known as intratubular dentin
C. Is best visualized in decalcified
sections
D. Is found in the interglobular dentin
E. It’s usually a part of tertiary dentin
Q.No.16. Which of the
following is considered as age changes.
A.
Sclerotic dentin
B. Cellular cementum
C. Primary dentin
D. Enamel spindle
E. Incremental lines of von ebner’s
Q.No.17. Tome’s granular
layer is
A. An extension of odontoblast processes
into enamel.
B.
A region lacking dentinal tubules
C. Following the incremental lines
D. Derived from the epithelial rests of
malassez
E. Normal rhythmic pattern of dentin.
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