Table 2: Comparisons of hardness between the study group and control group.

ThirdHmeanHskH20H50Hratio

ProximalStudy0.43±0.09-0.53±0.510.31±0.100.45±0.101.01±0.25
Control0.50±0.07-1.09±0.510.40±0.100.53±0.081.20±0.23
p value0.001<0.0010.001<0.0010.003
MiddleStudy0.42±0.06-0.46±0.420.31±0.080.44±0.070.97±0.19
Control0.45±0.07-0.59±0.330.33±0.070.47±0.081.05±0.23
p value0.1810.1460.2430.1030.148
DistalStudy0.43±0.07-0.36±0.460.28±0.090.44±0.090.91±0.14
Control0.43±0.05-0.22±0.350.27±0.060.44±0.080.91±0.13
p value0.7930.1740.7670.9790.959