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

Related Mcqs:

1. 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

2. 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

3. 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

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

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

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

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

6. The latest method of curing denture base resins______________?

   A. Heat
   B. Visible light
   C. Chemicals
   D. Lasers

7. The imperfection seen on the lingual flange of a lower denture caused by rapid heating during a curing cycle is called_____________?

   A. Localised Shrinkage porosity
   B. Gas inclusion porosity
   C. Micro porosity
   D. Surface porosity

8. Subsurface porosity is due to_____________?

   A. Thermal changes
   B. Thickness of the resin
   C. Lack of temperature
   D. Packing past the dough stage

9. Porosity of denture base is due to_______________?

   A. Packing at dough stage
   B. Curing at 160°F for 9 hrs
   C. Inadequate pressure
   D. All of the above

10. Porosity present in a acrylic denture is usually the result of______________?

    A. A prolonged curing cycle
    B. Lack of sufficient pressure applied to flask
    C. Insufficient acrylic resin monomer
    D. Prolonged bench cooling after curing