Dentistry Quiz

What is the definition of Dental Amalgam?

• A type of dental filling

• A type of tooth decay

• A type of dental tool

• A mixture of any metal or alloy with mercury

Which country no longer allows the use of dental amalgam by dentists?

• France

• Germany

• Spain

• Italy

What is the main advantage of Dental Amalgam as a filling material?

• Color matching with teeth

• Chemical bonding to tooth structure

• Quick setting time

• Long serviceability

What is the main disadvantage of Dental Amalgam?

• Quick setting time

• Color matching with teeth

• Chemical bonding to tooth structure

• Mercury toxicity

What is the purpose of Zinc in dental amalgam?

• Decrease setting expansion

• Improve plasticity of amalgam mix

• Act as a scavenger for oxides during alloy manufacturing

• Increase creep strength

Which phase of set amalgam is the strongest and most corrosion resistant?

• γ1-Ag2Hg3

• Ag2Hg3

• γ-Ag3Sn

• γ2-Sn8Hg

What is the main purpose of Indium in high-copper amalgam?

• Substitute for some Sn to improve strength and creep

• Improve plasticity of amalgam mix

• Decrease corrosion resistance

• Increase setting expansion

What is the main advantage of uni-compositional dental amalgams?

• Combines the advantages of easier condensation with admixed

• Low copper content

• Quick setting time

• High mercury content

What is the main purpose of Gallium alloy plastic restorative materials?

• Improve corrosion resistance

• Increase mercury content

• Mercury-free alternative to dental amalgam

• Decrease setting time

What is the main purpose of Tin in dental amalgam alloy?

• Act as a scavenger for oxides

• Improve plasticity of amalgam mix

• Increase creep strength

• Improve reactivity with mercury at room temperature