Amalgam achieves 70% of the strength by____________?

Related Mcqs:

1. Amalgam achieves 70% of the strength by____________?

   A. hours
   B. 4 hours
   C. 8 hours
   D. 16 hours

2. The cavity varnish applied reduces post operative sensitivity in amalgam restoration by____________?

   A. Decreasing conduction of heat to pulp
   B. Minimize marginal leakage around restoration
   C. By altering the chemical composition of restoration materials
   D. By preventing penetration of corrosion products into the dentinal tubules

3. High strength amalgam is achieved by_____________?

   A. Maximum matrix and minimum alloy phase
   B. Minimum matrix and maximum alloy phase
   C. Maximum matrix phase
   D. Minimum alloy phase

4. For dental amalgam, the elastic modulus and tensile strength is______________?

   A. 40 Gpa and 60 – 100 Mpa
   B. 21 Gpa and 27 – 55 Mpa
   C. 350 Gpa and 10 – 120 Mpa
   D. 360 Gpa and 125 – 130 Mpa

5. The effect of trituration on strength in an amalgam restoration depends on______________?

   A. Amalgam alloy
   B. Trituration time
   C. Speed of amalgamator
   D. All of the above

6. By increasing the percentage of which metal, the strength and hardness of amalgam increases_____________?

   A. Ag
   B. Zn
   C. Cu
   D. Hg

7. According of ADA specification No or number 1, the minimum compressive strength for silver amalgam filling aftr one hour should be________________?

   A. 80 Mpa
   B. 140 Mpa
   C. 260 Mpa
   D. 510 Mpa

8. Antibiotic that achieves high concentration in Hard tissue, because of its molecular size is______________?

   A. Ceftum
   B. Ciprofloxacin
   C. Clindamycin
   D. Erythromycin

9. Materials which has high compressive strength and low tensile strength is classified with property of________________?

   A. Ductility
   B. Brittleness
   C. Malleability
   D. Resilient

10. What is common in amalgam and ceramics ?

    A. More compressive strength but less tensile strength
    B. More compressive strength and tensile strength
    C. Less compressive strength but more tensile strength
    D. Less compressive strength and tensile strength