Ionic exchange between enamel surface and environment______________?

Related Mcqs:

1. 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

2. 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

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. Thin leaf like structures that extend from enamel surface in to DEJ are____________?

   A. Enamel spindles
   B. Enamel lamella
   C. Enamel tufts
   D. Perikymata

5. The shallow furrows on the enamel surface, where stria of Retzius end are known as _______________ ?

   A. Cracks
   B. Pellicle
   C. perikymata
   D. Enamel lamellae

6. A deep pit lined by enamel seen in the lingual surface of Maxillary lateral incipor is most likely to be_______________?

   A. Dens in dente
   B. Enamel Hypoplasia
   C. Talon’s cusp
   D. Enamel Pearl

7. The caries of enamel surface leads to accentuation of:__________?

   A. Incremental lines of retzius
   B. Perikymata
   C. Imbrication lines of pickerill
   D. Wickham’s striae

8. The striking difference between enamel and other mineralized tissues is______________?

   A. Presence of high percentage of organic matrix
   B. Presence of incremental lines
   C. Enamel has high reparative capacity
   D. Most of organic component is lost during mineralization

9. 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

10. All are true regarding the enamel spindles except____________?

    A. Produced by ameloblasts
    B. Found in the region of cusps
    C. Surrounded by inter prismatic enamel
    D. Terminate as rounded process