The ranking of tear strength from the lowest to highest of all impression materials generally is as follows_______________?
Correct answer: A. Hydrocolloids, silicones, polyether, polysulfide
- A. Hydrocolloids, silicones, polyether, polysulfide
- B. Silicones, hydrocolloids, polyether, polysulfide
- C. Polysulfide, hydrocolloids, silicones, polyether
- D. Hydrocolloids, polyether, silicones, polysulfide
Explanation
Hydrocolloids have the weakest tear resistance, while polysulfide has the greatest; silicones and polyether lie between them. Thus the general sequence is hydrocolloids, silicones, polyether, then polysulfide.
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