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.
111. The greatest stress which may be produced in a material such that stress is directly proportional to the strain is know as_____________?
A. The elastic limit
B. The proportional limit
C. The yield strength
D. Modulus of elasticity
112. The modulus of elasticity is defined as_______________?
A. The stress at the proportional limit
B. The strain at the proportional limit
C. The stress/strain ratio within the proportional limit
D. None of the above
113. Strain is defined as_____________?
A. An applied load or force
B. A deformation resulting from an applied load
C. An external force opposing an applied load
D. An internal force opposing an applied load
114. A good adhesive should possess all of the following EXCEPT________________?
A. High adherend wetting
B. High contact angle
C. Low contact angle
D. High flow
115. In measuring Vickers hardness no. Which of the following is used________________?
A. Spherical indenter
B. Steel ball indentation
C. Rhomboid shaped indenter
D. 136-degree diamond pyramid
116. The simplest alloy is a_______________?
A. Solid solution
B. Eutectic alloy
C. Peritectic allowy
D. Ternary alloy
117. Materials which has high compressive strength and low tensile strength is classified with property of________________?
A. Ductility
B. Brittleness
C. Malleability
D. Resilient
118. Maxwell – Voigt Model is to determine________________?
A. Elastic Behaviour
B. Plastic Behaviour
C. Viscoelastic Behaviour
D. All of the above
119. KHN value of Amalgam is_________________?
A. 90
B. 343
C. 67
D. 450
120. The melting point of silver is_____________?
A. 90
B. 343
C. 67
D. 450