Wash or corrective impression is done by______________?

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. Putty wash technique_________________?

   A. Light body and putty used at the same time
   B. Putty used first and light body used second
   C. Light body first and putty later
   D. None of the above

6. Chemical tempering in porcelains is done to interrupt crack propagation by______________?

   A. Transformation toughening
   B. Dispersion of crystalline phase
   C. Inducing residual compressive strength
   D. All of the above

7. Cleaning of base metal alloy is done by______________?

   A. Warm HCI
   B. Cold HF
   C. Cold H2SO4
   D. Sand blasting with aluminium oxide

8. Sterilization of liquid paraffin is done by______________?

   A. Autoclaving
   B. Hot air oven
   C. UV-Radiation
   D. Inspissation

9. Serological study for prevalence of Hepatitis B is best done by______________?

   A. Surface antigen
   B. Surface antibody
   C. Core antigen
   D. Core antibody

10. Impression compound base_____________?

    A. Low thermal conductivity
    B. Crystalline structure
    C. Formation of cross linkage with heating
    D. High fusion temperature