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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

Which of the following is true about direct filling gold______________?
A Properly condensed mat gold has no voids
B Whatever may be the type voids are inherent
C Voids can be avoided with manual condensation
D None of the above
Correct Answer: Whatever may be the type voids are inherent
The malleting force is directed______________?
A Perpendicular to the walls
B Parallel to long axis of crown
C 45° to the wall
D None of the above
Correct Answer: 45° to the wall
Pitting of direct filling old restoration usually results from_________________?
A Using contaminated gold foil
B Poor finished preparation
C Improper stepping of condenser point
D Using small condenser point
Correct Answer: Improper stepping of condenser point
The cohesive gold used as bulk filler is_____________?
A Electra alloy
B Mat gold
C Spherical gold
D Gold foll
Correct Answer: Mat gold
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
Correct Answer: Inducing residual compressive strength
To prevent porosity in dental porcelain it should be backed________________?
A Boric oxide
B In vacuum
C For long period
D Under pressure
Correct Answer: In vacuum
Pyroplastic flow of porcelain is due to___________________?
A High temperature during glazing
B Low temperature during glazing
C Improper condensation
D High firing temperature
Correct Answer: High temperature during glazing
Condensation shrinkage of porcelain during firing depends on__________________?
A Rate of arriving at firing temperature
B Uniformity of particle size
C Shape and size of particle
D Type of investment used
Correct Answer: Shape and size of particle
Porcelain is best fired__________________?
A In open air
B Under air compression
C When several layer are fired simultaneously
D Under minimum pressure
Correct Answer: Under air compression
Porosity in porcelain can be prevented by_______________?
A Thoroughness of condensation
B Rapidity of firing
C High firing temperature
D All of the above
Correct Answer: Thoroughness of condensation
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