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Physical Properties

Which one of the following is the result of applying a load to a wire below its modulus of elasticity on a load deflection diagram ?

Which one of the following is the result of applying a load to a wire below its modulus of elasticity on a load deflection diagram ?

A. Fracture of the wire
B. permanent deformation
C. Spring back
D. Increase in stiffness

Which one of the following is the result of applying a load to a wire below its modulus of elasticity on a load deflection diagram ? Read More »

Dental Materials, Medical Mcqs, Physical Properties

The ability of the base to resist occlusal forces and to support the restoration is affected by_______________?

The ability of the base to resist occlusal forces and to support the restoration is affected by_______________?

A. Compressive strength
B. Tensile strength
C. Young’s modulus
D. Modulus of elasticity

The ability of the base to resist occlusal forces and to support the restoration is affected by_______________? Read More »

Dental Materials, Medical Mcqs, Physical Properties

The ability of an alloy to withstand mechanical stresses without permanent deformation is reflected by its______________?

The ability of an alloy to withstand mechanical stresses without permanent deformation is reflected by its______________?

A. Resilience
B. Elastic limit / Elastic strain
C. Hardness
D. Fatigue resistance

The ability of an alloy to withstand mechanical stresses without permanent deformation is reflected by its______________? Read More »

Dental Materials, Medical Mcqs, Physical Properties

Which of the following physical property can be used to estimate indirectly the proportional limit of gold alloys ?

Which of the following physical property can be used to estimate indirectly the proportional limit of gold alloys ?

A. Vickers’s hardness number
B. Knoop hardness number
C. Brinell hardness number
D. Rockwell hardness number

Which of the following physical property can be used to estimate indirectly the proportional limit of gold alloys ? Read More »

Dental Materials, Medical Mcqs, Physical Properties