Eugenol may be replaced in the zinc oxide eugenol cement by______________?
A. Acetic acid
B. Alginic acid
C. Phosphoric acid
D. Ortho-ethoxy acid
Dental Materials
Which is the cement with adhesive properties ?
Which is the cement with adhesive properties ?
A. Zinc oxide eugenol
B. Zinc polycarboxylate
C. SIlicate
D. Glass ionomer
E. Both B & D
Which of the following do polycarboxylate and GIC have in common ?
Which of the following do polycarboxylate and GIC have in common ?
A. Polysiloxane
B. Phosphoric acid
C. Polyacrylic acid
D. Ion leachable glass
Which of the following show chemical bond with enamel (Calcified tissues)______________?
Which of the following show chemical bond with enamel (Calcified tissues)______________?
A. Composites
B. Direct filling resins
C. Polycarboxylate cements
D. BIS-GMA resins in pit and fissure sealants
Increased amount of powder in zinc phosphate cement mixture will cause_______________?
Increased amount of powder in zinc phosphate cement mixture will cause_______________?
A. Decreased strength
B. Decreased film thickness
C. Decreased solubility
D. Increased setting time
The temperature (in °F) of the mixing slab for silicate cements should be_____________?
The temperature (in °F) of the mixing slab for silicate cements should be_____________?
A. 55 – 65
B. 65 – 75
C. 75 – 85
D. 85 – 95
Which one of the following dental cement accelerates the formation of reparative dentin ?
Which one of the following dental cement accelerates the formation of reparative dentin ?
A. Eugenol
B. Calcium Hydroxide
C. Zinc oxide
D. Silica
Fluoride rich materials include ?
Fluoride rich materials include ?
A. Silicate cement
B. Glass ionomer cement
C. Polycarboxylate cement
D. All of the above
Dynamic creep is the______________?
Dynamic creep is the______________?
A. Continuing alloying between silver-tin alloy and mercury during the life of restoration
B. Deformation of set amalgam during function
C. Process whereby alloy is wetted by murcury
D. Spread of amalgam during packing
The dental amalgam is most resistant to________________?
The dental amalgam is most resistant to________________?
A. Compressive stress
B. Impact stress
C. Shear stress
D. Tensile stress