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.Management Sciences
Category: Calcification and Eruption of Teeth
What is the amount of time required by erupting premolar to move through 1 mm of bone as measured on a bite – wing radigraph ?
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A. 3-4 months
B. 4-5 months
C. 5-6 months
D. 6-7 months
While charting the dentition of a child, the pedodontist finds that the following teeth are present in all the four quadrants; permanent central incisor , permanent lateral incisor , decidous cuspid , decidous first molar, decidous 2nd molar and permanent 1st molar. The eruptive pattern may be considered most nearly normal for a child aged_____________?
A. 3-6 years
B. 7-10 years
C. 11-14 years
D. 15- 18 years
Which of the following gives the best description of erupted permanent teeth typically seen in a 9- years old______________?
A. Only molars
B. All teeth except third molars
C. 1,2,4,5,6,7 in all quadrants
D. 1,2,6 in all quadrants
Calcification of all teeth except last molars are completed by____________?
A. 2 years
B. 4 years
C. 6 years
D. 8 years
The first permanent tooth to erupt in the oral cavity is the_____________?
A. Mandibular central incisor
B. Mandibular first molar
C. Maxillary central incisor
D. Maxillary first molar
Calcification of third molar begins at__________________?
A. 8 months
B. 18 months
C. 8 years
D. 16 years
The tooth bud for the third molar is initiated at about the age of______________?
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
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