Porosity of denture base is due to_______________?

Related Mcqs:

1. 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...

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. The most important disadvantage of acrylic denture base is_______________?

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

4. Insufficient closure of the flasks during packing of denture base resin can result in_____________?

   A. Poor colour stability B. Less polymerization shrinkage C. Increase in vertical dimension D. Decrease in vertical dimension...

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

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

6. Insufficient closure of the flasks during packing of denture base resin can result in_____________?

   A. Poor colour stability B. Less polymerization shrinkage C. Increase in vertical dimension D. Decrease in vertical dimension...

7. Along with polymerisation shrinkage, one of the major disadvantages of polymethyl methacrylate as denture base resin are its poor_____________?

   A. Biological properties B. Thermal properties C. Mechanical properties D. Esthetic properties...

8. The latest method of curing denture base resins______________?

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

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

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

10. Cross linking in denture base resin is contributed by_____________?

    A. Glycol dimetharylate B. Benzoyl peroxide C. N-para toluidine D. Methyl methacrylate...