Knoop Surface Hardness Test

HE Hatem M. El-Damanhoury
NE Nesrine A. Elsahn
SS Soumya Sheela
TB Talal Bastaty
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As mentioned earlier, the Knoop surface microhardness (KHN) of the enamel surfaces before and after bleaching was recorded. Subsequently, the test was repeated following each remineralization treatment. The number of indentions per sample and the testing procedures were standardized throughout the study. At each testing point, data of each experimental group from 10 specimens were averaged.

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