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DENT MAT > Amalgam > Flashcards

Amalgam Flashcards

0
Q

Formula for dental amalgam

A

Silver alloy + mercury

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1
Q

Dental amalgam? (4)

A 
Qualified under restorative material
Used to fill up class 1&2 cavities
Some instances, class 3 distal cuspids
Select class 5 posterior
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2
Q

Formula for silver alloy

A

Silve + copper + tin

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3
Q

Manual mix instrument

A

Mortar & pestle

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4
Q

Mechanical mix instrument

A

Amalgamator

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5
Q

Freshly mix amalgam appears?

A

Putty like for 1st 4-5 mins

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6
Q

Final set?

A

24 hours

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7
Q

Advantages of amalgam (4)

A

Low cost
Easy to manipulate
Ease placement technique
Ideal longevity

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8
Q

Color of low copper content

A

Dark gray

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9
Q

Color of high copper content

A

Light gray

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10
Q

Material used for high copper content

A

Euginole amalgam

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11
Q

Advantages of high copper content

A

Higher strength
Less corrosion
Longer life

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12
Q

Types of silver alloy (3)

A

Irregular/ laphe cut
Spherical
Spheroidal
(Admixed) - irregular + spherical

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13
Q

___ has faster setting than irregular.

A

Spherical

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14
Q

Steps of mixing amalgam (manual mix)

A

Mix silver alloy + mercury via mortar & pestle
Place it on squeeze cloth/ cheesecloth
Wring out excess mercury
Apply amalgam mask to the cavity using amalgam carrier

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15
Q

Types of amalgam carrier

A

Lever type

Push type

16
Q

Disadvantages of alternatives of amalgam

A

Expensive
Limited longevity
Difficulty in placement

17
Q

It uses trituration machine / amalgamator

A

Amalgamation method/ trituration technique

18
Q

Amalgamation?

A

Reaction of mixing alloy & mercury

19
Q

Trituration?

A

Process of mixing silver alloy + mercury to form dental amalgam

20
Q

2 types of capsule

A

Premeasured capsule

Empty capsule w/ pestle inside

21
Q

Premeasured capsule?

A

Contains alloy + mercury

Disposable

22
Q

Advantages of Premeasured capsule (3)

A

Proper ratio of alloy to mercury
Limits handling pure mercury
Keeps mercury clean

DENT MAT (1 decks)

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