Cementum 2

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Cementum 2

Oral histology

7- Which of the following is not present inside both cellular and acellular cementum:

1 point

a- Cementoblasts

b- Hydroxyapatite crystals.

c- Incremental lines.

d- Sharpey's fibers.

Clear selection

8- Which of the following does not increase normally with age?

1 point

a- Pulp stones.

b- Dentin sclerosis.

c- Interglobular dentin.

d- Cementum thickness.

Clear selection

9-human teeth contain varities of cementum:

1 point

a- acelllular extrinsic fiber cementum.

b- cellular intrinsic fiber cementun.

c- mixed stratified cementum.

d- all of the above.

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10-Incremental lines of Salter are:

1 point

a- highly mineralized areas having less collagen and great amount of mucopolysaccharides.

b- hypomineralized areas containing less collagen and great amount of mucopolysaccharides.

c- unmineralized areas containing no collagen nor mucopolysaccharides.

d- similar to cementum mineralization.

Clear selection

11-cementum hypertrophy occurs:

1 point

a- in non functioning teeth.

b- functioning teeth.

c- in embedded teeth.

d- in malposed tooth

Clear selection

12-Cementoblasts are derived from:

1 point

a- epithelial root sheath of Hertwig.

b- epithelial rests of Malassez.

c- cells of dental papilla.

d- ectomesenchymal cells of tooth sac.

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13- Persistance of epithelial root sheath of Hertwig will result in:

1 point

a- Formation of intermediate cementum.

b- No cementum formation.

c- Formation of acellular cementum.

d- Formation of accessory root canal.

Clear selection

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