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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

In processing methyl methacrylate, the resin may show porosity if the flask is placed too soon porosity most likely occur_____________?
A Throughout the denture
B Near the borders
C In the thickest part
D On the denture surface
Correct Answer: In the thickest part
Composite resins in comparison to acrylic have_______________?
A Low compressive strength
B High abrasive resistance
C High water absorption
D High polymerization shrinkage
Correct Answer: High abrasive resistance
The chemical used to etch enamel is_______________?
A Zinc oxide
B Methyl methacrylate
C Phosphoric acid
D Eugenol
Correct Answer: Phosphoric acid
Which of the following procedure is indicated to produce cross-linking in the polymerization of linear chains of acrylic_______________?
A Addition of grain refining agents
B Addition of difunctional monomers
C Increasing the amount of heat required for linear polymerization
D Incorporation of terminating agents
Correct Answer: Addition of difunctional monomers
For photo-curing the composite resin the light source______________?
A Should be held at a millimeter distance from the restoration
B Need no protection while in use
C Will cure composite upto a depth of 5 millimeter thickness
D Is fiber optic
Correct Answer: Should be held at a millimeter distance from the restoration
In self-cure acrylic resin, activator is_____________?
A Toluidine
B Quaternary ammonium compound
C Benzoyl peroxide
D Tertiary amine
Correct Answer: Tertiary amine
Marginal leakage related to temperature change occurs to the greatest extent with_______________?
A Amalgam alloy
B Unfilled resin
C Composite resin
D Direct filling gold
Correct Answer: Unfilled resin
Acrylic resins were first introduced as a denture base material in______________?
A 1925
B 1937
C 1951
D 1956
Correct Answer: 1937
What is the disadvantage of using composites as restorative material ?
A Increased thermal conductivity
B Decreased wear resistance
C Decreased thermal conductivity
D None of the above
Correct Answer: Decreased wear resistance
The % of free monomer in a heat – cured acrylic resin is_______________?
A 3% to 5%
B 8% to 10%
C 0.2% to 0.5%
D 0.6% to 0.8%
Correct Answer: 0.2% to 0.5%
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