Cementum

Question 1

Which of the following is not a feature of cellular cementum?
a-    Lacunae and canaliculi.
b-   Continuous remodeling.
c-    Sharpey's fibers.
      d- Incremental lines.

Answer 1

B

Question 2

Cementum may be deposited on the surface of enamel as a consequence of:
a- Early degeneration of Hertwig’s sheath.
b- Injury to the reduced enamel epithelium.
c- Late degeneration of Hertwig’s sheath.
d-During passive eruption.

Answer 2

b

Question 3

Cementoblasts:
a- Are derived from the dental papilla.
b- Secrete both collagen and glycosaminoglycans.
c- Are multinucleated cell.
d- May become incorporated into acellular cementum.

Answer 3

B

Question 4

Which of the following is not present inside both cellular and acellular cementum:
a-            Cementoblasts
b-            Hydroxyapatite crystals.
c-             Incremental lines.
  d-     Sharpey's fibers.

Answer 4

a

Question 5

Which of the following does not increase normally with age?
a-            Pulp stones.
b-            Dentin sclerosis.
c-             Interglobular dentin.
  d-    Cementum thickness.

Answer 5

c

Question 6

Persistance of epithelial root sheath of Hertwig will result in:
a- Formation of intermediate cementum.
b- No cementum formation.
c- Formation of acellular cementum.
d- Formation of accessory root canal.

Answer 6

b

Question 7

As a result of aging, the dental pulp in human permanent teeth:
a- Increase in size and becomes more vascular.
b- Becomes less cellular and more fibrous.
c- Becomes more cellular and contains more ground substance.
d- Becomes more vascular and contains larger neural elements.

Answer 7

B