highly significantP < 0.0001
However, intragroup comparison for hardness values showed a statistically highly significant difference for Group 1 ( P < 0.0001) and a nonsignificant difference ( P = 0.4831) for Group 2.
However, intragroup comparison for hardness values showed a statistically highly significant difference for Group 1 ( P < 0.0001) and a nonsignificant difference ( P = 0.4831) for Group 2.