First evidence of calcification of maxillary permanent central incisors occurs at_____________?
A. 3-4 months
B. 10-12 months
C. 2-3 years
D. 3-4 years
Calcification and Eruption of Teeth
Primary canine erupts______________?
Primary canine erupts______________?
A. After D
B. Before B
C. After B
D. After E
In the majority of situations, the first decidous tooth to erupt is the______________?
In the majority of situations, the first decidous tooth to erupt is the______________?
A. Mandibular central incisor
B. Mandibular first molar
C. Maxillary central incisor
D. Maxillary second molar
Which of these teeth are highly sturdy and usually the last ones to be lost ?
Which of these teeth are highly sturdy and usually the last ones to be lost ?
A. First molar
B. Central incisors
C. Canines
D. Premolars
Before eruption the position of permanent mandibular incisor buds relative to primary incisors is_____________?
Before eruption the position of permanent mandibular incisor buds relative to primary incisors is_____________?
A. Superior and facial
B. Inferior and facial
C. Superior and lingual
D. Inferior and lingual
The root completion of permanent teeth is achieved after __________ years o eruption?
The root completion of permanent teeth is achieved after __________ years o eruption?
A. 1-1½
B. 2-3
C. 3-4
D. 4-5
Growth of all permanent teeth except last molars is completed by___________?
Growth of all permanent teeth except last molars is completed by___________?
A. 6 years
B. 8 years
C. 12 years
D. 17 years
Which of the following gives the best description of erupted permanent teeth typically seen in a 9- years old______________?
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
A six- year molar begins to calcify at______________?
A six- year molar begins to calcify at______________?
A. Six months IU
B. At birth
C. 1 years after birth
D. 3 years age
As compared to permanent tooth , root formation in primary tooth______________?
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