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Medical Science Mcqs 5254 MCQs [All-Courses]

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Medical Science is the study of human health, diseases, prevention, and treatment, focusing on diagnosis, patient care, and medical research to improve healthcare outcomes.

All Topics  5254

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
Correct Answer: All of the above
Decrease in creep occurs in_______________?
A Under trituration or over trituration of amalgam
B Decreases with condensation pressure
C Increase with condensation pressure
D Cannot be predictable
Correct Answer: Increase with condensation pressure
Cavo surface angle for amalgam resoration is butt joint as____________?
A It increases compresssive and tensile strengths
B Decreased compressive, increased strength
C Decreased compressive, decrease tensile strength
D Increased compressive, increased tensile strength
Correct Answer: It increases compresssive and tensile strengths
Which of the following are characteristic feature of high copper amalgam alloy ?
A Low compressive strength
B High marginal breakdown
C Less marginal #
D High creep
Correct Answer: Less marginal #
Co-efficient of Thermal exansion of amalgam is______________?
A 6.6 a (ppm k-1)
B 11.4 a (ppm k-1)
C 14.0 a (ppm k-1)
D 25.0 a (ppm k-1)
Correct Answer: 25.0 a (ppm k-1)
A patient who has had a recent amalgam filling in the upper teeth has a gold filling in the lower teeth, the patient complains of pain. The reason for this can be mainly_____________?
A Improper amalgam filling
B Pulp exposure
C Galvanism
D None of the above
Correct Answer: Galvanism
Outstanding clinical performance of dental amalgam restoration is related to its____________?
A Compressive strength
B Tensile strength
C Corrosion
D Creep
Correct Answer: Compressive strength
Absorption of mercury in the human body occurs least from_____________?
A Lungs
B Gastro-intestinal Track
C Skin
D Kidneys
Correct Answer: Kidneys
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
Correct Answer: From irregular and spherical particles
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
Correct Answer: Keep the amount of gamma-1 or gamma-2 matrix crystals to maximum
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