Amalgam Flashcards

1
Q

These particle give more fluid mix which is easy to shape and condense, can be carved immediately and take 3h to reach occlusal strength

A

Spheroidal or mixture of spheroidal and lathe cut

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2
Q

Preferred for pinned restorations

A

Spheroidal

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3
Q

> 6 to reach occlusal strength

A

Lathe cut

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4
Q

The weakest Sn – HG or gamma 2 Phase of the set amalgam could be eliminated by increasing the proportion of this material

A

Copper

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5
Q

The percentage of copper added to amalgam to eliminate the weakest phase of set amalgam

A

10-30%

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6
Q

This composition of alloy is more resistant to tarnishing

A

Silver tin copper

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7
Q

The first conventional alloys introduced had a low copper content of this percent

A

5%

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8
Q

Preparation should be Overfilled so that

A

The Mercury rich Layer is remote by carving

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9
Q

Burnishing is the recommended in order to prevent

A

Marginal leakage

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10
Q

Maximum strength of amalgam after restoration

A

24h

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11
Q

Silver - 68%
Tin- 28%
Copper - 4%
Zinc - 0-2%

A

Conventional amalgam

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12
Q

Silver - 60%
Tin 27%
Copper 13%
Zinc 0

A

High copper

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13
Q

Microleakage can be reduced by this conventional cavity varnish

A

Copalite

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14
Q

Microleakage can be reduced by this bonding agent in the interim

A

Amalgambond or panavia

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15
Q

Allergy due to amalgam constituents

A

Lichenoid eruptions

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