The percentage of inorganic matter in fully developed enamel is about____________?

Related Mcqs:

1. At the CEJ cementum overlaps enamel about____________?

   A. 55 to 60%
   B. 60 to 65%
   C. 65 to 70%
   D. 70 to 75%

2. Inorganic content of enamel is about______________?

   A. 35%
   B. 50%
   C. 4%
   D. 96%

3. 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

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

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

5. 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

6. The microhardness of dentin is about____________?

   A. 1/2 that of enamel
   B. 1/7 that of enamel
   C. 1/4 that of enamel
   D. 1/5 that of enamel

7. The apical foramen of a fully developed permanent tooth is usually lined by_____________?

   A. Dentin
   B. Cementum
   C. Epithelial rest cells
   D. The Epithelial diaphragm

8. Inorganic content of cementum is_____________?

   A. Less than bone
   B. More than bone
   C. Equal to that of bone
   D. More than that of enamel

9. Inorganic content of cementum is______________?

   A. 45 to 50%
   B. 50 to 55%
   C. 55 to 60%
   D. 60 to 65%

10. When the prosthetic group of an enzyme is an inorganic ion, it is called a_____________?

    A. Cofactor
    B. Coenzyme
    C. Apoenzyme
    D. Holoenzyme