What is the thickness of the layer of primsless enamel found in primary teeth_____________?

Related Mcqs:

1. Which teeth show less curvature on the crown above the cervical line than any other teeth_____________?

   A. Maxillary anterior
   B. Mandibular canine
   C. Mandibular anteriors
   D. Maxillary canine

2. Ratio of diameter of enamel rods in the DEJ to the enamel surface is______________?

   A. 1:4
   B. 1:1
   C. 1:2
   D. 2:1

3. Temporary structures in enamel organ are (before enamel formation) ?

   A. Enamel knot
   B. Enamel cord
   C. Both A and B
   D. Enamel Cuticle

4. Smooth surface caries is characterized by spread of caries in enamel and dentin as cones. These alignment in enamel and dentin is____________?

   A. Base to base
   B. Apex to base
   C. Apex to apex
   D. None of the above

5. Difference between primary and permanent enamel is_______________?

   A. In prism arrangement
   B. in mineral content
   C. No difference in enamel, difference in dentin
   D. None of the above

6. The thickness of prismless enamel in diciduous teeth is______________?

   A. 25 μ m
   B. 50 μ m
   C. 75 μ m
   D. 100 μ m

7. Nutrition for ameloblasts after 1st layer of enamel is laid is______________?

   A. Dental sac
   B. Odontoblastic process
   C. Ree
   D. Dental Papilla

8. Maxillary primary cuspid enamel completion takes place at______________?

   A. 6 months in utero
   B. 6 months after birth
   C. 9 months in utero
   D. 9 months after birth

9. Roots of primary and secondary teeth are different in that the primary roots are more divergent and flaring. The other difference _____________?

   A. Primary roots show less a accessory and lateral canals
   B. Primary roots resorb more easily
   C. Primary roots are shorter
   D. None of the above

10. The primary germ layer endoderm is derived from_____________?

    A. Embryonal disc
    B. Yolk sac
    C. Amniotic cavity
    D. Palacenta