Cold cure acrylic expand in water by___________?

Related Mcqs:

1. Acrylic (cold cure)______________?

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

2. To cure a heat cure resin, a proper heating cycle is necessary_____________?

   A. To prevent the porosity
   B. To prevent warpage
   C. To prevent volume expansion
   D. All of the above

3. In self-cure acrylic resin, activator is_____________?

   A. Toluidine
   B. Quaternary ammonium compound
   C. Benzoyl peroxide
   D. Tertiary amine

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

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

5. To prevent porosity in self-cure acrylic resin, curing should be carried in______________?

   A. Cold water
   B. Hot water
   C. Under tap water
   D. Under vacuum pressure

6. Quartz tungsten light cure device minimum output of energy should not be less than_____________?

   A. 300 mw/sm2
   B. 350 mw/cm2
   C. 400 mw/cm2
   D. 450 mw/cm2

7. Light cure system, side effect is____________?

   A. Iritis
   B. Cataract
   C. Conjunctivitis
   D. Retinal damage

8. Composite resins in comparison to acrylic have_______________?

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

9. 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%

10. 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