A. 6 months of intra utrerine life
B. At birth
C. Before decidous incisors
D. About 1 year after birth
Related Mcqs:
- The primary lateral incisors begin to calcify about the_____________?
A. 4th month of life
B. 4th month in utero
C. 41/2 month in utero
D. 5th month in utero - Growth of all permanent teeth except last molars is completed by___________?
A. 6 years
B. 8 years
C. 12 years
D. 17 years - According to Schour & Massler the crown completion of both permanent maxillary and mandibular first molars is________________?
A. 1½ 2 years
B. 2½ – 3 years
C. 3-4 years
D. 3-5 years - Crown formation of all permanent teeth except third molars is completed between_____________?
A. Birth to 8 years
B. Birth to 12 years
C. Birth to 6 years
D. 6 years to 12 years - 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 - A six- year molar begins to calcify at______________?
A. Six months IU
B. At birth
C. 1 years after birth
D. 3 years age - The permanent mandibular second molar differs from the permanent mandibular first molar in number of ______________?
A. Cusps
B. Roots
C. Lingual grooves
D. Marginal ridges - Calcification of all teeth except last molars are completed by____________?
A. 2 years
B. 4 years
C. 6 years
D. 8 years - The most constant and valuable trait to differentiate among maxillary first, second and third molars i____________?
A. Number of roots
B. Depth of central fossae
C. Comparative size of the cusp of carabelli
D. Relative position of the distolingual grooves - Which of the following decidous molars bears the greatest resemblance to a premolar _____________?
A. Maxillary first
B. Maxillary second
C. Mandibular first
D. Mandibular second
