The time taken for primary tooth root completion after eruption_____________?
A. 3 years
B. 1 years
C. 2 years
D. 1 month
A. 3 years
B. 1 years
C. 2 years
D. 1 month
A. 2 years
B. 4 years
C. 6 years
D. 8 years
A. One year
B. Two years
C. Three years
D. Four years
A. 12 CDE6
B. 12C456
C. 123DE6
D. 123456
A. Maxillary first
B. Maxillary second
C. Mandibular first
D. Mandibular second
A. From birth to 11 years
B. From 6 months to 11 years
C. From 6 months to 6 years
D. From 6 years to 11 years
A. Decidous maxillary 2nd molar
B. Decidous maxillary 1st molar
C. Decidous mandibular 2nd molar
D. Decidous mandibular 1st molar
A. 4th month of life
B. 4th month in utero
C. 41/2 month in utero
D. 5th month in utero
A. Mandibular central incisor
B. Mandibular first molar
C. Maxillary central incisor
D. Maxillary second molar
A. Enamel rods at cervical region directed occlusally
B. Results in constriction at cervical region
C. Is characteristic of decidous teeth
D. All of the above