The chemical used to etch enamel is_______________?

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

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

3. 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

4. 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

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. In adult teeth, the type of dentin present underlying dentin-enamel junction is_______________?

   A. Predentin
   B. Mantle dentin
   C. Interglobular dentin
   D. Tertiary dentin

7. 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

8. KHN of enamel is close to______________?

   A. Pure gold
   B. Amalgam
   C. Prcelain
   D. Composite

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

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

10. Developmental enamel defects are most commonly seen in_______________?

    A. Primary incisors
    B. Primary 2nd molar
    C. Permanent incisors
    D. Permanent 1st molar