Acrylic resins are used for______________?

Related Mcqs:

1. All of the following statements about the differences between self-polymerizing acrylic resins and heat-cured resins are true EXCEPT______________?

   A. The former have a lower molecular weight
   B. The former have higher residual monomer content
   C. The former are more porous
   D. The former have greater transverse strength

2. Composite resins in comparison to acrylic have_______________?

   A. Low compressive strength
   B. High abrasive resistance
   C. High water absorption
   D. High polymerization shrinkage

3. Acrylic resins were first introduced as a denture base material in______________?

   A. 1925
   B. 1937
   C. 1951
   D. 1956

4. In heat cure denture base acrylic resins the monomer is___________?

   1. Methacrylate
   2. Ethylmethacrylate
   3. Methyl ethyl methacrylate
   4. Polymethylmethacrylate

5. Acrylic (cold cure)______________?

   A. Melts at 100°C
   B. Softens at 100°C
   C. Still requires heat for polymerization
   D. Produces heat during polymerization

6. The most important disadvantage of acrylic denture base is_______________?

   A. porosity
   B. Shrinkage
   C. Tooth breakage
   D. Water absorption

7. The % of free monomer in a heat – cured acrylic resin is_______________?

   A. 3% to 5%
   B. 8% to 10%
   C. 0.2% to 0.5%
   D. 0.6% to 0.8%

8. During polymerisation of acrylic resin, above what temperature benzoyl peroxide form freeradicals_______________?

   A. 25°C
   B. 37°C
   C. 50°C
   D. 60°C

9. Which of the following may result if an excessive amount of monomer is incorporated into an acrylic resin mixture ?

   A. Excessive expansion
   B. Low impact strength
   C. Excessive shrinkage
   D. Excessive brittleness

10. Which of the following is present in the powder of the acrylic resin______________?

    A. Methyl methacrylate
    B. Benzoyl peroxide
    C. Hydroquinone
    D. D-methyl paratolouidine