Table 3: Descriptive statistics showing the intragroup comparison of the mean and standard deviation and the significance p-value of difference in surface microhardness among the various experimental groups at 7th day and 30th day

Groups		7th day		30th day		Mean difference		7th day vs 30th day
								t-value		p-value
Group I GI		36.8 ± 4.6		47.7 ± 5.4		10.9    ↑		4.83		< 0.01,S
Group II LCGI		24.3 ± 2.8		22.0 ± 2.4		2.3    ↓		2.01		0.06, NS
Group III GI10BAG		32.0 ± 3.5		30.6 ± 3.2		1.4    ↓		0.92		0.37, NS
Group IV LC10BAG		17.2 ± 2.7		21.3 ± 2.1		4.1    ↑		3.74		< 0.01,S