KHN of enamel is close to______________?

Related Mcqs:

1. KHN value of Amalgam is_________________?

   A. 90
   B. 343
   C. 67
   D. 450

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. Which one of the following restorative materials is having coefficient of thermal expansion close to that of tooth enamel and dentin ?

   A. Microfilled composite resins
   B. Pure gold
   C. Silver amalgam
   D. Type II Glass ionomer cement

6. Mottled enamel is due to______________?

   A. Vitamin A deficiency
   B. Excess of fluoride
   C. Vitamin D deficiency
   D. Teratogens

7. Recurrent laryngeal nerve has close relation to______________?

   A. Superior thyroid artery
   B. Middle thyroid vein
   C. Inferior thyroid artery
   D. Inferior parathyroid

8. Coefficienty of thermal expansion of tooth enamel is closest to_______________?

   A. Slicate cement
   B. Composite
   C. GIC
   D. Polycarboxylate

9. Which of the following show chemical bond with enamel (Calcified tissues)______________?

   A. Composites
   B. Direct filling resins
   C. Polycarboxylate cements
   D. BIS-GMA resins in pit and fissure sealants

10. The chemical used to etch enamel is_______________?

    A. Zinc oxide
    B. Methyl methacrylate
    C. Phosphoric acid
    D. Eugenol