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.Management Sciences
Category: Restorative Resins
The advantage of unfilled methyl methacrylate is that______________?
A. It can be finished smoothly
B. It has a low degree of flow
C. It’s non-irritation to pulp
D. It’s wear resistant is high
In self-cure acrylic resin, activator is_____________?
A. Toluidine
B. Quaternary ammonium compound
C. Benzoyl peroxide
D. Tertiary amine
Quartz tungsten light cure device minimum output of energy should not be less than_____________?
A. 300 mw/sm2
B. 350 mw/cm2
C. 400 mw/cm2
D. 450 mw/cm2
The polymerization of self-curing resin takes faster in______________?
A. Cold water
B. Hot water
C. Under pressure
D. In vaccum
The type of spatula used to mix composite is________________?
A. Plastic
B. Stainless steel
C. Iron
D. None of the above
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
Radio opacity to composite resins is rendered by_______________?
A. Silica glass
B. Organic matrix
C. Barium glass and strontium glasses
D. Fluoride particles
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
Boiling point of methyl methacrylate________________?
A. B.P of water
B. < B.P of water
C. Equal of BP of water
D. Is at normal room temperature
Use of dimethyl-P-toluidine is indicated for_______________?
A. Thermal polymerization of acrylic
B. Chemical polymerization
C. Retarding the polymerization reaction
D. To inhibit the action of benzoyl peroxide
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