Table 1.

“Comparison of∆E values between baseline and bleaching group”

Sessions	Group	Mean±SD	Results of one-way ANOVA
			F	P
Delt_E_baseline	Group 1	30.43±2.89	0.123	0.885
	Group 2	29.60±3.92
	Group 3	30.10±4.34
	Total	30.04±3.65
Delt_E_bleaching	Group 1	4.37±2.47	0.802	0.459
	Group 2	4.28±2.06
	Group 3	5.49±2.58
	Total	4.71±2.36
Results of repeated measure ANOVA		F (overall)	1526.813	0.001
		F (between group)	0.416	0.664

SD: Standard deviation