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Questions and Answers
Which element is NOT typically found in dental amalgam?
Which element is NOT typically found in dental amalgam?
- Zinc (correct)
- Tin
- Copper
- Silver
What are the main types of dental amalgam based on copper content?
What are the main types of dental amalgam based on copper content?
- Admixed and modifiable
- Low-copper and admixed
- Lathe-cut and spherical
- High-copper and low-copper (correct)
In what dental procedures is dental amalgam commonly used?
In what dental procedures is dental amalgam commonly used?
- Class I and II fillings
- Crown and bridge preparations
- Filling of root apices
- All of the above (correct)
Which of the following is a disadvantage of amalgam restorations?
Which of the following is a disadvantage of amalgam restorations?
Which component of dental amalgam increases hardness and strength?
Which component of dental amalgam increases hardness and strength?
Which phase in the Low-Copper Amalgam is the strongest and most corrosion resistant?
Which phase in the Low-Copper Amalgam is the strongest and most corrosion resistant?
What is the composition of the High-Copper Amalgam?
What is the composition of the High-Copper Amalgam?
What happens during the trituration process in the Low-Copper Amalgam?
What happens during the trituration process in the Low-Copper Amalgam?
Which phase decreases with time due to corrosion in the Low-Copper Amalgam?
Which phase decreases with time due to corrosion in the Low-Copper Amalgam?
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Study Notes
Dental Amalgam
- Zinc is NOT typically found in dental amalgam.
- Based on copper content, the main types of dental amalgam are:
- Low-Copper Amalgam
- High-Copper Amalgam
- Dental amalgam is commonly used in:
- Fillings
- Restorations
- Bonding
- A disadvantage of amalgam restorations is:
- Mercury toxicity
- The component that increases hardness and strength in dental amalgam is:
- Copper
- In Low-Copper Amalgam, the strongest and most corrosion-resistant phase is:
- Gamma-1 phase
- The composition of High-Copper Amalgam is:
- High copper alloy (6-30%) + mercury
- During the trituration process in Low-Copper Amalgam, the:
- Alloy powder reacts with mercury to form a mixture of gamma-1 and gamma-2 phases
- In Low-Copper Amalgam, the phase that decreases with time due to corrosion is:
- Gamma-2 phase
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