A. Methyl methacrylate
B. Benzoyl peroxide
C. Hydroquinone
D. D-methyl paratolouidine
Related Mcqs:
- 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 - All of the following statements about the differences between self-polymerizing acrylic resins and heat-cured resins are true EXCEPT______________?
A. The former have a lower molecular weight
B. The former have higher residual monomer content
C. The former are more porous
D. The former have greater transverse strength - Which of the following may result if an excessive amount of monomer is incorporated into an acrylic resin mixture ?
A. Excessive expansion
B. Low impact strength
C. Excessive shrinkage
D. Excessive brittleness - The most important disadvantage of acrylic denture base is_______________?
A. porosity
B. Shrinkage
C. Tooth breakage
D. Water absorption - In self-cure acrylic resin, activator is_____________?
A. Toluidine
B. Quaternary ammonium compound
C. Benzoyl peroxide
D. Tertiary amine - Acrylic resins were first introduced as a denture base material in______________?
A. 1925
B. 1937
C. 1951
D. 1956 - During polymerisation of acrylic resin, above what temperature benzoyl peroxide form freeradicals_______________?
A. 25°C
B. 37°C
C. 50°C
D. 60°C - Cold cure acrylic expand in water by___________?
A. 1% by volume 0.23% by weight
B. 10% by volume 0.23% by weight
C. 0.1% by volume 0.23% by weight
D. None of the above - In heat cure denture base acrylic resins the monomer is___________?
1. Methacrylate
2. Ethylmethacrylate
3. Methyl ethyl methacrylate
4. Polymethylmethacrylate - Acrylic resins are used for______________?
A. Anterior restorations
B. Temporary bridges
C. Denture base
D. All of the above
