Oral Anatomy MCQs

Page No. 23

How many pulpal horns are there in the mandibular second primary molar ?


a3

✖


b6

✖


c4

✖


d5

✓


View Answer 5

Cusp of carbaelli can be considered a normal finding on____________?


aDecidous mandibular 1st molar

✖


bDecidous maxillary 1st molar

✖


cDecidous maxillary 2nd molar

✓


dDecidous mandibular 2nd molar

✖



With respect to their permanent successors the sum of the mesidodistal diameters of the first and second decidous molar is generally ____________?


aLess

✖


bGreater

✓


cThe same

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dNot related

✖


View Answer Greater

The direction of enamel rods in decidous teeth is_____________?


aSame as permanent teeth

✖


bInclined in an apical direction in the cervical third of crown

✖


cInclined in an occlusal direction in the cervical third of crown

✓


dNone of the above

✖



What is the thickness of the layer of primsless enamel found in primary teeth_____________?


a25 μm

✓


b50 μm

✖


c75 μm

✖


d100 μm

✖


View Answer 25 μm

The pulp of first primary molar contains________________?


aFour pulp horn and three root canal

✓


bThree pulp horn and three root canal

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cTwo pulp horn and two root canal

✖


dTwo pulp horn and three root canal

✖



The crowns and roots of primary molar at their cervical portions are more____________?


aSlender Slender anteroposteriorly

✓


bSlender anteroposteriorly

✖


cBulkier Slender anteroposteriorly

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dBulkier anteroposteriorly

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View Answer Slender mesiodistally

During the development of a tooth, sound coalescence of the lobes results in_____________?


aGrooves

✓


bFissures

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cCusps

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dAll of the above

✖


View Answer Grooves

The largest mesiodistal diameter in primary dentition is____________?


aMandibular 1st molar

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bMandibular2nd molar

✓


cMaxillary 2nd molar

✖


dNone of the above

✖


View Answer Mandibular2nd molar

How many cusps does the crown of the maxillary first primary molar have ?


a2

✖


b3

✖


c4

✓


d5

✖


View Answer 4

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