The Knoop Hardness Number of Microfilled composite Restorative material ranges from____________?
Correct answer: B. 25 - 35 KHN
- A. 50 - 60 KHN
- B. 25 - 35 KHN
- C. 15 - 20 KHN
- D. 40 - 48 KHN
Explanation
Microfilled composites contain smaller and less heavily loaded filler particles, giving them a lower Knoop hardness than hybrid composites. Their commonly quoted hardness range is about 25 to 35 KHN.
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