Oral Anatomy MCQs

Page No. 21

Generally in majority of children, the sequence of eruption of permanent teeth in mandible is____________?


a1-6-2-3-5-4-7-8

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b6-1-2-4-5-3-7-8

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c6-1-2-3-4-5-7-8

✓


d6-1-2-4-3-5-7-8

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View Answer 6-1-2-3-4-5-7-8

First evidence of initiation of primary dentition is usually around_____________?


a4 months in utere

✓


bBirth

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c4 months after birth

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dOne year after birth

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View Answer 4 months in utere

Which of the following is dental formula of a 9 years old child_____________?


a6 EDC21/ 6EDC21

✓


b6EDCBA/ 6EDC21

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cEDC21/EDC21

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d76EDC21/ 7EDC21

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View Answer 6 EDC21/ 6EDC21

Number of teeth seen on X- ray at birth_______________?


a20

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b22

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c24

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d30

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View Answer 24

Eruption date of decidous maxillary 2nd molar is ______________?


a20 months

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b18 months

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c24 months

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d28 months

✓


View Answer 28 months

What is the amount of time required by erupting premolar to move through 1 mm of bone as measured on a bite – wing radigraph ?


a3-4 months

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b4-5 months

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c5-6 months

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d6-7 months

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View Answer 4-5 months

Kalu, a 6- years – old child, received tetracycline. Noticeable discoloration will be seen in______________?


aPremolars, incisors and 1st molars

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bCanines and 2nd molars

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cCanines, premolars and2nd molars

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dIncisors and 1st molars

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Calcification of third molar begins at__________________?


a8 months

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b18 months

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c8 years

✓


d16 years

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View Answer 8 years

The time taken for primary tooth root completion after eruption_____________?


a3 years

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b1 year

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c2 years

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d1 month

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View Answer 1 years

Calcification of all teeth except last molars are completed by____________?


a2years

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b4 years

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c6 years

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d8 years

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View Answer 8 years

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