The commonly used laser for curing composite resin is______________?

Related Mcqs:

1. 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

2. One of the claims for the superiority composite resin restoration over silicate cement restorations is that the resin restorations_____________?

   A. Prevent galvanic action
   B. Are practically insoluble in oral fluids
   C. Adapt to the walls of the cavity better
   D. Have a higher coefficient of thermal expansion

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

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

4. 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

5. 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

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. Which of the following constituents is common in occlusal sealants, bonding agents, composite resins ?

   A. BIS GMA
   B. Polymethyl methacrylate
   C. Benzoin methyl ether
   D. Silica filter

9. Which one of the following is used as filler in composite resins ?

   A. Quartz
   B. Silicates
   C. Zinc particles
   D. Aluminium

10. About polymerization shrinkage of composite all are true, except______________?

    A. Polymerization shrinkage is greater if bonded surface area is lesser than unbounded surface area
    B. Polymerization shrinkage is high if within the enamel margins
    C. Acid etching and priming will decrease polymerization shrinkage
    D. Microleakage can occur because of polymerization shrinkage