Hardening solutions are used with impression made of________________?

Related Mcqs:

1. Alginate impression material is similar to Agar-agar impression material in the following respect________________?

   A. Gelation increase in both on increase in temperature
   B. Mixing time is increased to reduce the setting time
   C. Deformation during removal of impression occurs due to distortion of gel fibers
   D. Both can be re-used for fresh impressions

2. Which of the following impression materials is easy to pour and difficult to remove the stone cast from the impression ?

   A. Addition polysilicone
   B. Condensation polysilicone
   C. Polyether
   D. Polysulfide

3. Best impression material to be used for securing impression after crown preparation_______________?

   A. Alginate
   B. Agar
   C. Elastome
   D. Zno paste

4. Agar impression materials differ from alginate impression materials in that the former sets by_______________?

   A. Mechanical action of saliva
   B. Physical change
   C. Evolution
   D. Chemical change

5. Age hardening is a process done at______________?

   A. Heating up to 200 – 450°C for 15 – 30 min and quenching in water
   B. Heating at 700°C for 10 – 15 min and quenching in water
   C. Heating at 700°C for 1 hour and quenching in water
   D. Heating above 700°C for 30 min and quenching in water

6. Heat hardening is the process done at_______________?

   A. Heating 750°C and slowly cooling to zero degree
   B. Heating quickly upto 450°C followed by sudden quenching
   C. Heating upto 250°C for 15 to 30 min
   D. Heating at 750°C and then quenching to room temperature

7. The term ordered hardening heat treatment used in which of the following dental alloys ?

   A. Gold-Copper
   B. Nickel-Chromium
   C. Nickel-Titanium
   D. Silver-Palladium

8. Which of the following is not true about elastomeric impression ?

   A. Single mix material have higher viscosity
   B. Shear thinning is related to viscosity of non phase impression material
   C. Improper mixing of material can cause permanent deformation of impression
   D. Putty – wash technique of impression reduces dimensional change of setting

9. Which of the following component acts as an accelerator in ZOE impression paste ?

   A. Zinc Sulphate & Zinc chloride
   B. Zinc chloride & Eugenol
   C. Zinc Sulphate & Eugenol
   D. Glycerin

10. The most mucostatic impression material is_______________?

    A. Thin mix of plaster of paris
    B. Zinc oxide eugenol impression paste
    C. Free flowing wax
    D. Reversible hydrocolloids