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Questions and Answers
What is the crystalline form of commercial gutta-percha at room temperature?
What is the crystalline form of commercial gutta-percha at room temperature?
- Beta (correct)
- Alpha
- Amorphous
- Gamma
At what temperature range does beta form gutta-percha transition into the alpha phase?
At what temperature range does beta form gutta-percha transition into the alpha phase?
- 42°C to 49°C (correct)
- 30°C to 35°C
- 60°C to 65°C
- 50°C to 55°C
What happens to alpha phase gutta-percha when heated above 53°C to 59°C?
What happens to alpha phase gutta-percha when heated above 53°C to 59°C?
- It transitions into the amorphous phase (correct)
- It transitions into the beta phase
- It remains in the alpha phase
- It sublimates
What is the phase of gutta-percha that has no crystalline structure?
What is the phase of gutta-percha that has no crystalline structure?
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How many crystalline forms of gutta-percha are mentioned in the text?
How many crystalline forms of gutta-percha are mentioned in the text?
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