When Gold Fused With Porcelain Is Fired At Very High Temperature Greenish Discoloration Of Cervical Margin Is Due To______

High Firing Temperature

Disintegration Of Opaque Layer

Formation Of Excess Oxides

Presence Of Copper

When Gold Fused With Porcelain Is Fired At Very High Temperature Greenish Discoloration Of Cervical Margin Is Due To______

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