Table 4: Averages and standard deviations of the initial and final values for Knoop microhardness (KHN) and percentages of microhardness.
Groups (n= 5)
|
Initial KHN Average and standard deviation
|
Final KHN Average and standard deviation
|
%KHN |
OP38 |
344.6 ± 7.63 Aa*
|
360.1 ± 26.18 Aa*
|
4.40% |
PO37 |
347.2 ± 13.07 Aa*
|
356.8 ± 17.1 Aa*
|
2.70% |
*Groups with the same letters are statistically similar (uppercase letters in columns and lowercase letters in rows).