MCQs of Dental Materials – Amalgams

The term trituration means:

Dynamic creep is the:

The highest mercury concentration in amalgam filling is found

The dental amalgam is most resistant to:

The ADA specification No 1 for composition of amalgam alloy recommends

According of ADA specification No or number 1, the minimum compressive strength for silver amalgam filling aftr one hour should be:

Which of the following phases of dental amalgam has minimum strength

Admixed high copper alloy powder contains

Compare to conventional amalgams, spherical amalgams

Finishing and polishing of Amalgam make the restoration:

Which of the following statements about high copper silver alloy compared to conventional alloy is not true?

Setting time of Amalgam is best controlled by?

Increase in the residual mercury in silver amalgam filling can:

High Cu alloys have all of the following except:

Chronic mercury toxicity results from:

In non zinc containing dental amalgam alloy the percentage of zinc present is

In spherical alloys as compared to lathe cut:

High copper dental amalgams are superior to other amalgams because high copper dental amalgems

Well premeasured capsules of amalgam can release mercury vapour during:

The largest component of amalgam alloy is:

In a high copper amalgam the phase, which is eliminated is:

During amalgamation, trituration is done to:

Moisture contamination of amalgam can lead to:

Amalgam restorations give the best clinical service when the residual mercury content is:

Discolouration of silver alloy is due to:

Percentage of tin in low copper alloy is:

Advantage of zinc containing amalgam is:

Cause of expansion in zinc containing amalgam is:

What is the working time of amalgam?

Which of the following amalgam alloys is least susceptible to creep:

The percentage of copper in high copper alloy is:

How soon after a moisture contamination does a zinc containing amalgam alloy start expanding

What is common in amalgam and ceramics ?

What is the most frequently used restorative material?

Which of the following constituents of amalgam alloy decreases expansion

Which of the following silver amalgam alloy have the maximum strength

The higher the Hg alloy ratio in dental amalgam:

Copper content in low copper amalgam is:

Ag-Cu eutectic alloy has a characteristic Property of that fusion temp of:

Which phase provides maximum strength in hardened mercury/silver alloy?

What is the recommended for condensation of dental amalgam?

The tarnished layer of silver amalgam consists of:

Which is not true about high copper amalgam alloys:

The threshold limit value of mercury exposures is:

Amalgam means:

Mercury intoxication in dental office mainly results from:

In amalgam alloy which acts as oxygen scavenger:

Over-trituration of silver alloy and mercury:

By increasing the percentage of which metal, the strength and hardness of amalgam increases:

Mercury rich condition in a slow setting amalgam alloy system in a resoration in

Which of the following statement is true regarding lathe cut low Copper silver alloy?

A true eutectic alloy has melting point

Creep value of which of the following is the highest?

Advantage of minimum mercury technique or Eames technique is all Except:

Amalgam achieves 70% of the strength by:

The solid solution of silver and mercury is called:

Mercury is toxic because it:

Once triturated, the Dental amalgam should be condensed with in:

What fraction of inhaled mercury vapors retained in the body?

High strength amalgam is achieved by:

The effect of trituration on strength in an amalgam restoration depends on:

Which of the following does not occur in High Copper Amalgam?

Decrease in creep occurs in:

For dental amalgam, the elastic modulus and tensile strength is:

Cavo surface angle for amalgam resoration is butt joint as:

Adequate mixing of mercury is indicated by:

Which of the following are characteristic feature of high copper amalgam alloy?

Which is true regarding lathe cut silver alloy:

Co-efficient of Thermal exansion of amalgam is:

Gallium and indium added to Amalgam replace

A patient who has had a recent amalgam filling in the upper teeth has a gold filling in the lower teeth, the patient complains of pain. The reason for this can be mainly

Which one of the following is not an objective of trituration?

Outstanding clinical performance of dental amalgam restoration is related to its

High copper amalgam can be produced

Absorption of mercury in the human body occurs least from: