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

Related Mcqs:

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

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

2. The polymerization of self-curing resin takes faster in______________?

   A. Cold water
   B. Hot water
   C. Under pressure
   D. In vaccum

3. 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

4. In processing methyl methacrylate, the resin may show porosity if the flask is placed too soon porosity most likely occur_____________?

   A. Throughout the denture
   B. Near the borders
   C. In the thickest part
   D. On the denture surface

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. Cold cure acrylic expand in water by___________?

   A. 1% by volume 0.23% by weight
   B. 10% by volume 0.23% by weight
   C. 0.1% by volume 0.23% by weight
   D. None of the above

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

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

8. For photo-curing the composite resin the light source______________?

   A. Should be held at a millimeter distance from the restoration
   B. Need no protection while in use
   C. Will cure composite upto a depth of 5 millimeter thickness
   D. Is fiber optic

9. The commonly used laser for curing composite resin is______________?

   A. Nd:YAG
   B. CO2
   C. ER:YAG
   D. Argon

10. If curing occurs at temperature more than 100°C porosity results in which area of denture______________?

    1. Hard thick central area
    2. Thin Palatal area
    3. Thin area of flanges
    4. Porosity is uniformly distributed