Oral Histology MCQs

Page No. 10

Which of the following tissues have no reparative capacity______________?


aEnamel


b Dentin


cCementum


d Periodontal ligament


View Answer Enamel

The type of fibrous element in enamel is_____________?


aTono filament


b Keratin like fibre


cCollagen fibre


d Vimentin filament


View Answer Keratin like fibre

Specific gravity of enamel is_____________?


a2.8


b3.8


c 4.8


d2.3


View Answer 2.8

Length of enamel rods is_____________?


aGreater than the thickness of enamel


b Less than the thickness of enamel


cEqual to the thickness of enimal


dNone of the above



Which of the following statement is correct_________________?


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


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


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


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


bEnamel lamella


cEnamel tufts


d Perikymata


View Answer Enamel lamella

Hertwig’s root sheath is formed from______________?


a Stratum inter medium


b Stellate reticulum


cOuter enamel epithelium


dCervical loop


View Answer Cervical loop

Moth eaten appearance of of enamel is seen in____________?


aOdontodysplasia


b Amelogenisis stage


cDesmolytic stage


dMottled enamel


View Answer Odontodysplasia

Shape of enamel rod is______________?


aKey hole or paddle shaped


b Square


cRound


dNone of the above



Ameloblasts is______________?


a A cell from which tooth enamel is formed:


bA tissue from which tooth erupts


cA tumour of the jaw


dPertaining to dentin



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