Which of the following is correct arrangement of impression material regarding linear contraction in ascending order ?
Correct answer: A. Addition silicone < polyether < polysulfide < condensation silicone
- A. Addition silicone < polyether < polysulfide < condensation silicone
- B. Addition silicone < polysulfide < Polyether < condensation silicone
- C. condensation silicone < polyether < polysulfide < Addition silicone
- D. condensation silicone < polysulfide < polyether < Addition silicone
Explanation
Linear contraction generally increases from addition silicone to polyether, polysulfide and condensation silicone. Addition silicone has minimal contraction, whereas condensation silicone contracts most because alcohol is released.
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