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.Management Sciences
Category: Calcification and Eruption of Teeth
The tooth bud for the third molar is initiated at about the age of______________?
0
A. 6th month I.U
B. 1st year of life
C. 2nd year of life
D. 8th year of life
As compared to permanent tooth , root formation in primary tooth______________?
A. Take less time
B. Take more time
C. Same time
D. Is complete when tooth erupts in oral cavity
Calcification of roots of decidous teeth is completed by_____________?
A. 2 years
B. 4 years
C. 6 years
D. 8 years
Root completion of the mandibular first molar takes place by the age_______________?
A. 7-8 years
B. 8-9 years
C. 9-10 years
D. 10 – 11 years
The first evidence of calcification of primary anterior teeth begins approximately between ______________?
A. 14 to 17 weeks in utero
B. 9 to 12 weeks in utero
C. 6- to 9 weeks in utero
D. 17 to 20 weeks in utero
Kalu, a 6- years – old child, received tetracycline. Noticeable discoloration will be seen in______________?
A. Premolars, incisors and 1st molars
B. Canine and 2nd molars
C. Canines, premolars and2nd molars
D. Incisors and 1st molars
The most common sequence of eruption of the permanent maxillary teeth in children is_______________?
A. 1-6-2-3-4-7-5-8
B. 2-3-1-6-7-5-4-8
C. 6-1-2-4-3-5-7-8
D. 6-1-2-3-4-5-7-8
The process of exfolitation of primary teeth is between_____________?
A. Seventh and eight years
B. Seventh and ninth years
C. Seventh and tenth years
D. Seventh and Twelfth years
A child has 12 permanent and 12 decidous teeth, what is his age____________?
A. 8½ years
B. 11½ years
C. 4½ years
D. 13½ years
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