Impression materials( Dental materials ) is of liquid or semi-solid nature when first mixed and placed in the mouth. It then sets to become an elastic solid (usually takes a few minutes depending upon the material), leaving an imprint of a person’s dentition and surrounding structures of the oral cavity. Academictask provides 2000+ basic and advanced level of dental materials MCQs with answers. In this section, we focus on all areas of MCQs on dental materials subject and cover all important topics of impression material like Amalgams, Dental Cements, Direct Filling Gold, Gypsum Products Mcqs, Impression Materials, Metallurgy, Physical Properties, Dental Ceramics & Miscellaneous, Restorative Resins – and much more. All these topics are chosen from trusted and best reference books on dental and impression materials. These dental materials MCQs are also helpful for the preparation of interviews, entrance examinations, other competitive examinations, and certifications for all Experienced, Freshers and Students. Also, check MCQs on Pathology here.
91. Angles between Adhesive and Adherent is Zero degree, it indicates_______________?
A. Complete wetting of surfaces
B. Rough surfaces between Adhesive & Adherent
C. Adherent and Adhesive molecules are tangent to each other
D. Irregularities present between Adherent surfaces
92. Brazilian test is used to determine the ultimates tensile strength of_________________?
A. Ductile materials
B. Flexible materials
C. Brittle materials
D. Malleable materials
93. For adhesion to be present between solid and liquid________________?
A. Liquid should wet solid surface
B. Mechanical interlocking should be present
C. Should have high contact angle
D. None of the above
94. When two metals are completely miscible in liquid state and they remain completely mixed on solidifiation, the alloy formed is called________________?
A. Solid solution
B. Eutectic mixture
C. Peritectic mixture
D. Inter metallic compounds
95. A crystal in metal substructure is_______________?
D. None of the above
96. Munsell system is used to_________________?
A. Define and measure colour qualitatively
B. Define and measure physical properties of gold alloys
C. Evaluate brittleness of different alloys
D. Measures different colours quantitatively
97. Space lattice refers to_______________?
A. Inter atomic movement
B. Inter atomic imbalance
C. Arrangement of atoms
D. Arrangement of molecules
98. The strain that occurs when a material is stressed to its proportional limit is______________?
B. Maximum flexibility
D. Elastic limit
99. Liquids which become more rigid as the rate of deformation increases is termed as_____________?
100. A restorative material which has a high proportional limit, compared with one with a lower proportional limit would have________________?
A. Greater ductility
B. Greater toughness
C. A higher modulus of elasticity
D. A higher modulus of elasticity
E. More resistance to permanent deformation