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29 Cards in this Set
- Front
- Back
Ag3Sn
|
Gamma
|
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Cu3Sn
|
Epsilon
|
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Ag2Hg3
|
Gamma 1
|
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Hi copper single has what?
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Cu, Ag, Sn + Hg
|
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High copper (single)
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Best because no Gamma 2.
Gamma + Epsilon + Hg --> Gamma 1 + Eta + Gamma + Epsilon |
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Traditional low copper
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Gamma + Hg --> Gamma + Gamma 1 + Gamma 2 +
|
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High Copper 2 Reactions
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1. Gamma + AgCu + Hg -->
Gamma + Gamma 1 + Gamma 2 + AgCu 2. Gamma 2 + AgCu --> Eta + Gamma 1 |
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Sn7-8Hg
|
Gamma 2
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CuSn5
|
Eta
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Non working side
|
mediotrusive/balancing
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#4 clamp
|
small maxillary premolars
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Atropine Sulfate
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not used routinely
|
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Bella Donnas
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15mg 2 hours before
|
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Scopalamine
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.4mg 1/2 hr between
|
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Valium
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5 -10 mg 1hour prior
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Dentin critical pH
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6.2
|
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12A clamp
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Right mandibular and Left Max molars
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7 clamp
|
Mandibular molars
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Excess Hg causes?
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a decrease in physical and mechanical properties
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Lack of Hg causes?
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an increase in porosity, rough dry and irregular surface
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Seven steps
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Outline, resistance, retention, convenience, removal decay, cavosurface, Debridement
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Problems with Low copper amalgams
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1. Low strength and problem with Gamma 2 (corrosion prone)
|
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Tin
|
reduces expansion, good hardening
|
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Silver
|
increases mechanical resistance and delay shiny appearance loss and corrosion
|
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Zinc
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Antioxidant; exapnsion
|
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Copper
|
increases hardness
|
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#2
|
Large premolars
2A is small PM |
|
#9
|
Butterfly clamp
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#7
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Mandibular molars
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