Which of the following best describes the working time of impression material ?
Correct answer: C. The time for start of mixing till just before the start of appearing elastic properties of impression material
- A. After the start of appearing elastic properties of impression material
- B. Just after the start of appearing elastic properties of impression material
- C. The time for start of mixing till just before the start of appearing elastic properties of impression material
- D. Loss of lusture of impression material
Explanation
Working time is measured from the beginning of mixing until the material starts developing elastic properties. Once elasticity begins, the material enters its setting phase and should be seated promptly.
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