Amalgam

Front 1

Class_____are curious lesions located on the gingival 3rd of the facial or lingual surface?

Back 1

ClassV

Front 2

Is the term indicating the gradual loss of tooth structure along the biting surface due to occlusal wear?

Back 2

Attrition

Front 3

Your efda or dentist can confirm that a new restoration is equal forces in maximal intercospel positions by using articulating paper

Back 3

True

Front 4

What are the four main ingredients in amalgam?

Back 4

Silver tin copper zink

Hint 4

Saint cz

Front 5

Four medals sometimes added to amalgam in small amounts

Back 5

Palladium, Indium selenium and gold

Front 6

And an amalgam Restoration with low copper has less than what percent of copper in it

Back 6

9%

Front 7

And amalgam restoration that is labeled high copper has what percentage of copper in it

Back 7

12% to 30%

Front 8

What is added to amalgam to help decrease expansion (Creep) and has a less marginal breakdown?

Back 8

Copper

Front 9

What is added to amalgam that aids in combining the Mercury with the alloy?

Back 9

Tin

Front 10

What is added to amalgam that prevents oxidation during manufacturing processes also reduces brittleness

Back 10

Zinc

Front 11

Metals such as palladium, gold and Indian and smaller quantities have been included to alter the what in amalgams

Back 11

Corrosion resistance in certain mechanical properties of the finished amalgamass

Front 12

Term that describes the reaction between the alloy and the mercury

Back 12

Amalgamation

Front 13

The combination of tin and mercury results in what process?

Back 13

Gamma two-phase

Front 14

This leads to an increase inflow and corrosion and a decrease in strength that predisposes the restoration to fracture

Back 14

Gamma 2 phase

Front 15

This term is the slow change in dimensions of the amalgam due to prolonged exposure to stress

Back 15

Creep

Front 16

The major cause of gross fracture of amalgam restorations is usually found in

Back 16

Design of the cavity preparation. Sufficient bulk of the material must be provided to support applausal forces

Front 17

Characteristics of amalgam are three things

Back 17

1)the size and shape of the allied particles 2) the ratio of mercury to alloy. 3) Manipulation such as mixing time, titration and condensation

Front 18

Name the two types of alloy particles

Back 18

Lathe cut and spherical cut

Front 19

This type of alloy particle has the cutting rate is precisely controlled to maintain the desired average particle size and size distribution

Back 19

Lathe cut

Front 20

This size and shape of alloy particle is round. They require less mercury because they have smaller service area per volume then do the lathe cut alloys

Back 20

Spherical alloy particles

Front 21

This type of matrix band is essential to prevent flat proximal contours improper contacts and overhanging cervical margins

Back 21

A. Contoured and wedged matrix

Front 22

This term says the longer the mixing time, the less expansion, or the greater the contraction

Back 22

Trituration time

Front 23

What is Mercury alloy ratio?

Back 23

The greater the percentage of Mercury in the final amalgam, the greater the expansion of the material and the lower the strength of the final amalgam

Front 24

Condensation increasing pressure during placement does what to the expansion?

Back 24

Condensation increasing pressure during placement decreases the expansion

Front 25

Contamination of water can cause excessive delayed expansion because of

Back 25

The hydrogen bubbles

Front 26

This greatly increases the amount of expansion in the alloy and is even more pronounced in zinc containing alloys

Back 26

Contamination moisture

Front 27

Slight expansion of an amalgam is beneficial because

Back 27

It allows the restoration to fit tightly in the preparation, minimizing leakage along the interface between the restoration and the tooth

Front 28

Fractures more likely to happen in the proximal area of a class 2 amalgam because

Back 28

The tinsel strength of amalgam, which resists being pulled apart is only about 1/8 the compressive strength

Front 29

Doing this produces a dryer mix lax, Mercury and lax cohesive to the mass. When it is placed it reduces amalgam strength

Back 29

Under tituration

Front 30

This results in porosity or voids that decrease strength results in excess mercury that weakens the amalg Restoration and leaves it more susceptible to corrosion and tarnish

Back 30

Inadequate condensation force

Front 31

This occurs when dissimilar metals in the mouth such as silver amalgam restorations against gold restorations acts like a battery

Back 31

Galvanism

Front 32

This term is time dependent, strain or deformation that is produced by a stress

Back 32

Creep

Front 33

Two ways Mercury and alloy can be packaged

Back 33

Dispenser that accepts a vial of pellets and container of Mercury or a second way Mercury combination is the prepackaged proportion disposable capsules