Impression plaster is_____________?

Related Mcqs:

1. Impression plaster containing potato starch is called______________?

   A. Plaster of paris
   B. Soluble plaster
   C. Anti – expansion solution
   D. Die stones

2. 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

3. 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

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

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

5. 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

6. Inelastic impression material is_____________?

   A. Impression compound
   B. Alginate
   C. Agar-agar
   D. Polyether

7. The impression materials with lowest viscosity is_____________?

   A. Plaster of paris
   B. Agar – agar
   C. Zinc oxide eugenol
   D. Elastomers

8. Plaster of paris is mixed in________________?

   A. Plastic bowl
   B. Rubber bowl
   C. Glass bowl
   D. Metal bowl

9. In plaster of paris the setting time is primarily altered by_________________?

   A. Altering P / L Ratio
   B. Altering temperature of mixing water
   C. Speed and length of hand spatulation
   D. Addition of accelerators and retarders

10. Plaster mix____________?

    A. Rapid spatulation results in decreased setting time
    B. 2% potassium sulphate is accelerator
    C. Citrates are retarders
    D. All of the above