The Knoop Hardness Number of Microfilled composite Restorative material ranges from____________? July 25, 2019 – by admin The Knoop Hardness Number of Microfilled composite Restorative material ranges from____________? A. 50 – 60 KHNB. 25 – 35 KHN C. 15 – 20 KHN D. 40 – 48 KHN