Podcast
Questions and Answers
What is the purpose of an impression material?
What is the purpose of an impression material?
- To record the form and dimensions of oral tissues (correct)
- To introduce materials into the mouth for consumption
- To manipulate oral fluids
- To provide a positive reproduction of oral tissues
Which of the following is not a desirable quality of impression materials?
Which of the following is not a desirable quality of impression materials?
- Easily manipulated with minimal equipment
- Good shelf life
- Non-toxic and non-irritant
- Affected by oral fluids (correct)
What is one of the factors affecting the accuracy of impression materials during setting?
What is one of the factors affecting the accuracy of impression materials during setting?
- High dimensional changes during setting (correct)
- Having a low flow during insertion into the mouth
- Poor shelf life
- Lack of elasticity on removal from the mouth
Why is it important for impression materials to be elastic on removal from the mouth?
Why is it important for impression materials to be elastic on removal from the mouth?
Which quality is not necessary for an impression material?
Which quality is not necessary for an impression material?
What is the purpose of pouring a suitable model or die material into a set impression?
What is the purpose of pouring a suitable model or die material into a set impression?
What property of impression materials should be compatible with gypsum products?
What property of impression materials should be compatible with gypsum products?
How are impression materials classified based on their manner of hardening?
How are impression materials classified based on their manner of hardening?
What type of impression material is used when there is no undercut present?
What type of impression material is used when there is no undercut present?
Which of the following is a characteristic of elastic impression materials?
Which of the following is a characteristic of elastic impression materials?
Which of the following impression materials harden by chemical reaction?
Which of the following impression materials harden by chemical reaction?
What is the primary difference between condensation and addition silicone impression materials?
What is the primary difference between condensation and addition silicone impression materials?
