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.Management Sciences
Category: Restorative Resins
Which of the following is present in the powder of the acrylic resin______________?
A. Methyl methacrylate
B. Benzoyl peroxide
C. Hydroquinone
D. D-methyl paratolouidine
To cure a heat cure resin, a proper heating cycle is necessary_____________?
A. To prevent the porosity
B. To prevent warpage
C. To prevent volume expansion
D. All of the above
Inadequate pressure application during flasking_______________?
A. Increases vertical dimension
B. Causes teeth to be shrunken in investment
C. Causes poor quality of colour
D. Causes fracture of denture
Acrylic resins were first introduced as a denture base material in______________?
A. 1925
B. 1937
C. 1951
D. 1956
Which one of the following is used as filler in composite resins ?
A. Quartz
B. Silicates
C. Zinc particles
D. Aluminium
The % of free monomer in a heat – cured acrylic resin is_______________?
A. 3% to 5%
B. 8% to 10%
C. 0.2% to 0.5%
D. 0.6% to 0.8%
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
Which of the following is an example of a composite material ?
A. A filled resin
B. Colloidal silica
C. Gold alloy
D. Wax
One bottle system of adhesive resins_____________?
A. 4th generation bonding agents
B. Separate etching step not required
C. Separate etching step is still required
D. Contains only primer
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
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