Oral Histology MCQs

Page No. 11

The small ridges, perikymata, seen on facial surfaces of canines are the result of_____________?


aHyperplasia

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bHypoplacification

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cNormal development

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dInterstitial development

✓



Enamel spindles are formed by______________?


aCracks

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bAmeloblasts

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cOdontoblasts

✓


dHypocalcified rods

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View Answer Odontoblasts

Incremental lines of Retzius appear_____________?


aAs lines in the enamel running at right angles to the enamel surface

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b As lines in the dentin running at right angles to the dentino-enamel junction

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c In enamel and follow the apposition pattern

✓


dIn dentin and follow the appositional pattern

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Enamel rods at the cervical area at the occlusal edge and incisal lip in permanent teeth are______________?


aStraight

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bShallow

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cBent

✓


dCurved

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View Answer Bent

The thickness of prismless enamel in diciduous teeth is______________?


a25 μ m

✓


b50 μ m

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c75 μ m

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d100 μ m

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View Answer 25 μ m

narled enamel is seen in_____________?


aProximal surface of tooth

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b Cervical region of tooth

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cCusp tips of tooth

✓


dAll of the above

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View Answer Cusp tips of tooth

Neonatal lines are seen in_______________?


aEnamel of deciduous incisiors

✓


bEnamel of permanent incisors

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cEnamel of premolars

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dDentin of all teeth, as if is formed first

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Maximum amount of phosphate is seen in_______________?


aBone

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bEnamel

✓


cGingiva

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d Dentin

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View Answer Enamel

Which of the following is correct about enamel crystals ?


aSame as dentin crystals

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bContains organic portion in the center

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cRoughly texagonal in shape

✓


dTheir diameter is about 5 microns in size

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Non acidic, nonionic protein which helps in enamel mineralization _______________?


aTuftelin

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b Sheathlin

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c Enamelin

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dAmelogenin

✓


View Answer Amelogenin

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