Podcast
Questions and Answers
What precaution should be taken when removing the cast from the impression?
What precaution should be taken when removing the cast from the impression?
Why is it crucial to handle the removal of the cast carefully?
Why is it crucial to handle the removal of the cast carefully?
What characteristic is mentioned about the impression in the text?
What characteristic is mentioned about the impression in the text?
Why is it advised to be cautious while dealing with the cast from the impression?
Why is it advised to be cautious while dealing with the cast from the impression?
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What potential risk exists if the cast is removed carelessly?
What potential risk exists if the cast is removed carelessly?
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Study Notes
Polyether Impression Material
- Polyether is a synthetic polymer that can be converted to solid rubber at room temperature by mixing with a suitable catalyst.
- Uses of polyether impression material:
- Crown and bridge impressions
- General use in all cases
- Also known as Mercaptan or Thiokol
- Presentation: comes in collapsed tubes as base and accelerator or catalyst
- Properties:
- High tear strength
- Low hardness
- Good flexibility
- Hydrophobic (requires mouth to be dried before making an impression)
- Important notes:
- Cast removal from impression requires care to avoid breakage
- Despite being hydrophobic, polyether is actually hydrophilic
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Description
Test your knowledge on synthetic polymers that can be converted to solid rubber at room temperature with the addition of a catalyst. Explore the synthesis process and properties of elastomers in this quiz.
