What is the initial contraction in the first 20 minutes of dental amalgam setting due to?

Quiz on Properties of Dental Amalgam

Quiz
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Other
•
12th Grade
•
Medium
Mo Ha
Used 1+ times
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24 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Crystal growth of new phases
Reaction of mercury with the alloy particles
Solution of the alloy particle's surfaces into mercury
Diffusion of mercury between the alloy particles
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main characteristic of dental amalgam in terms of strength?
Ductile
Elastic
Brittle
Flexible
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the time-dependent plastic deformation due to stress application below the yield stress before complete setting of amalgam called?
Expansion
Creep
Flow
Contraction
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can marginal seal be obtained in dental amalgam?
Low copper amalgam alloy
High mercury/alloy ratio
No corrosion products
Good condensation
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the viscoelastic nature of dental amalgam responsible for?
Bond to tooth structure
Flow and creep
Dimensional changes
Strength
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the effect of creep in dental amalgam?
Marginal breakdown
All of the above
Gingival overhangs
Occlusal overhangs
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does dental amalgam develop its strength?
Within 1 hour
After 2 weeks
Instantly after setting
Slowly within 7 days
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