Outstanding clinical performance of dental amalgam restoration is related to its____________?
A. Compressive strength
B. Tensile strength
C. Corrosion
D. Creep
Medical Mcqs
Absorption of mercury in the human body occurs least from_____________?
Absorption of mercury in the human body occurs least from_____________?
A. Lungs
B. Gastro-intestinal Track
C. Skin
D. Kidneys
High copper amalgam can be produced_____________?
High copper amalgam can be produced_____________?
A. From smooth atomized particles
B. From irregular and spherical particles
C. From lathe cut particles
D. From traditional alloy particles
Which one of the following is not an objective of trituration ?
Which one of the following is not an objective of trituration ?
A. Remove oxides from powder particle surface
B. Keep the amount of gamma-1 or gamma-2 matrix crystals to maximum
C. Pulverize pelletes into particles to aid in attack by mercury
D. Achieve a workable mass of amalgam in minimum time
Gallium and indium added to Amalgam replace______________?
Gallium and indium added to Amalgam replace______________?
A. Silver
B. Tin
C. Mercury
D. Zinc
Which is true regarding lathe cut silver alloy_______________?
Which is true regarding lathe cut silver alloy_______________?
A. Requires least amount of mercury
B. Achieves lowest compressive strength at 1 hr.
C. Has tensile strength both at 15 min & 7 days comparable to high copper unicompositional alloy
D. Has low creep
Adequate mixing of mercury is indicated by_______________?
Adequate mixing of mercury is indicated by_______________?
A. Dry Mix
B. Shiny Mix
C. Short Mixing Time
D. None of the above
For dental amalgam, the elastic modulus and tensile strength is______________?
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
Which of the following does not occur in High Copper Amalgam ?
Which of the following does not occur in High Copper Amalgam ?
A. Electrochemical Corrosion
B. Chemical Corrosion
C. Penetrating Corrosion
D. Corrosion does not occur at all
High strength amalgam is achieved by_____________?
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