Oral Histology MCQs

Page No. 10

Which of the following tissues have no reparative capacity______________?


aEnamel

✓


b Dentin

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cCementum

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d Periodontal ligament

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View Answer Enamel

The type of fibrous element in enamel is_____________?


aTono filament

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b Keratin like fibre

✓


cCollagen fibre

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d Vimentin filament

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View Answer Keratin like fibre

Specific gravity of enamel is_____________?


a2.8

✓


b3.8

✖


c 4.8

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d2.3

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View Answer 2.8

Length of enamel rods is_____________?


aGreater than the thickness of enamel

✓


b Less than the thickness of enamel

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cEqual to the thickness of enimal

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dNone of the above

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Which of the following statement is correct_________________?


a In cross sections enamel rods appear hexagonal and resembles fish scales

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b The bodies of rods are near occlusal and incisal surfaces, where as the tails point cervically

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cThe apatite crystals are parallel to bodies and deviate 65° from the tails

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dAll of the above

✓


View Answer All of the above

Thin leaf like structures that extend from enamel surface in to DEJ are____________?


aEnamel spindles

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bEnamel lamella

✓


cEnamel tufts

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d Perikymata

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View Answer Enamel lamella

Hertwig’s root sheath is formed from______________?


a Stratum inter medium

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b Stellate reticulum

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cOuter enamel epithelium

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dCervical loop

✓


View Answer Cervical loop

Moth eaten appearance of of enamel is seen in____________?


aOdontodysplasia

✓


b Amelogenisis stage

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cDesmolytic stage

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dMottled enamel

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View Answer Odontodysplasia

Shape of enamel rod is______________?


aKey hole or paddle shaped

✓


b Square

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cRound

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dNone of the above

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Ameloblasts is______________?


a A cell from which tooth enamel is formed:

✓


bA tissue from which tooth erupts

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cA tumour of the jaw

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dPertaining to dentin

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