Denture acrylics contain cross-linking agents mainly to improve their_____________?

Related Mcqs:

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

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

2. Which of the following procedure is indicated to produce cross-linking in the polymerization of linear chains of acrylic_______________?

   A. Addition of grain refining agents
   B. Addition of difunctional monomers
   C. Increasing the amount of heat required for linear polymerization
   D. Incorporation of terminating agents

3. The cross linking agent of polysulphide rubber base impression material is______________?

   A. Aromatic sulfonate esters
   B. Stannous octate
   C. Platinum salt catalyst
   D. Lead dioxide

4. The main advantage of composites over unfilled direct filling resin is their_____________?

   A. Higher solubility in saliva
   B. Lower modulus of elasticity
   C. Esthetic excellence
   D. Lower thermal co-efficient of expansion

5. If resin is packed in sandy stage what will be seen in the processed denture ?

   A. Distortion
   B. Porosity
   C. Inhomogeneous colour
   D. Increased strength

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. If resin is packed in sandy stage what will be seen in the processed denture ?

   A. Distortion
   B. Porosity
   C. Inhomogeneous colour
   D. Increased strength

8. The latest method of curing denture base resins______________?

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

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

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