Impression compound has which of the following characteristic property ?

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. Impression compound is characterized by all of the following except_______________?

   A. Warps at room temperature
   B. Is a thermoset material
   C. Shows increased flow when kneaded with water
   D. Low coefficient of thermal conductivity

6. Which of the following is correct glass transition temperature of Impression compound ?

   A. 43.5°C
   B. 39°C
   C. 65°C
   D. 100°C

7. Impression compound base_____________?

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

8. Minimum flow of Type-I impression compound at mouth temperature is___________________?

   A. 4%
   B. 6%
   C. 8%
   D. 10%

9. Ag-Cu eutectic alloy has a characteristic Property of that fusion temp of_____________?

   A. The resultant alloy is greater
   B. The resultant alloy is lesser
   C. The resultant alloy varies according to the content of Ag of Cu
   D. None of the above

10. Which of the following is true about Agar hydrocolloid impression material ?

    A. Liquefies between 71 – 100°C
    B. Solidfies between 50 – 70°C
    C. Facilitates fabrication of metal dyes
    D. Cannot register fine surface details