Before pouring an elastic impression it is washed with slurry of water and stone to______________?
Correct answer: D. Wash off saliva on impression
- A. Increase gel strength
- B. Prevent syneresis
- C. Prevent distortion
- D. Wash off saliva on impression
Explanation
Washing an elastic impression removes saliva, blood and other surface contaminants before the cast is poured. It does not restore gel strength or prevent syneresis, which is controlled mainly by proper handling and prompt pouring.
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