At the CEJ cementum overlaps enamel about____________?

Related Mcqs:

1. If overgrowth of cementum does not improve the functional qualities of cementum, it is termed as_____________?

   A. Hyperplasia
   B. Hypoplasia
   C. Hypertrophy
   D. Excementoses

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

   A. 66%
   B. 76%
   C. 86%
   D. 96%

3. The distance from the CEJ to the alveolar crest normally is____________?

   A. 1 – 1.5 mm
   B. 2 mm
   C. 2 – 2.3 mm
   D. 3 mm

4. 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

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

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

6. 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

7. 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

8. The region in which cementum formation is most rapid is_____________?

   A. Middle
   B. Coronal
   C. Apical
   D. Interradicular

9. Hardness of fully mineralized cementum is_____________?

   A. Less than dentin
   B. More than dentin
   C. Equal dentin
   D. None of the above

10. Cementum that forms in conjunction with root end formation and eruption_____________?

    A. Cellular cementum
    B. Acellular cementum
    C. Both of the above
    D. None of the above