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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