Why GIC is best restorative material in children_____________?

Related Mcqs:

1. What is the most frequently used restorative material ?

   A. Silicate
   B. Amalgam
   C. Composite
   D. Gold

2. The Knoop Hardness Number of Microfilled composite Restorative material ranges from____________?

   A. 50 – 60 KHN
   B. 25 – 35 KHN
   C. 15 – 20 KHN
   D. 40 – 48 KHN

3. A restorative material which has a high proportional limit, compared with one with a lower proportional limit would have________________?

   A. Greater ductility
   B. Greater toughness
   C. A higher modulus of elasticity
   D. A higher modulus of elasticity
   E. More resistance to permanent deformation

4. What is the disadvantage of using composites as restorative material ?

   A. Increased thermal conductivity
   B. Decreased wear resistance
   C. Decreased thermal conductivity
   D. None of the above

5. Which of the following do polycarboxylate and GIC have in common ?

   A. Polysiloxane
   B. Phosphoric acid
   C. Polyacrylic acid
   D. Ion leachable glass

6. MEchanism of adhesion of GIC restoration with tooth surface is by mean of ______________?

   A. Carboxyl group
   B. Chelates with Metal Ions
   C. C=C double bond
   D. Polymer chains

7. Advantage of zinc phosphate over GIC is______________?

   A. High compressive strength
   B. Tensile strength
   C. High modulus of elasticity
   D. Diametral strength

8. 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

9. The function of the coupling agent in a restorative resin is to allow______________?

   A. Adhesion of resin particles
   B. Bonding between filler crystals
   C. Bonding between filler and resin
   D. Bonding between tooth and resin

10. Alginate impression material is similar to Agar-agar impression material in the following respect________________?

    A. Gelation increase in both on increase in temperature
    B. Mixing time is increased to reduce the setting time
    C. Deformation during removal of impression occurs due to distortion of gel fibers
    D. Both can be re-used for fresh impressions