Evaluation of Extraradicular Diffusion of Hydrogen Peroxide during Intracoronal Bleaching Using Different Bleaching Agents

Table 1

The means, standard deviation (SD) values, and results of ANOVA and Tukey’s test for comparison of extraradicular diffusion between four groups.

Time	Group 1		Group 2		Group 3		Group 4		value
	(Opalescence Endo 35%)		(Opalescence PF 35%)		(sodium perborate-30% hydrogen peroxide mixture)		(sodium perborate-water mixture)
	Mean	S.D	Mean	S.D	Mean	S.D	Mean	S.D
1 day	0.168^c	0.049	0^d	0	0.068^d	0.021	0^d	0
7 days	0.482^b	0.051	0.210^c	0.125	0.375^b	0.049	0.141^c	0.040
14 days	0.865^a	0.061	0.430^b	0.030	0.743^a	0.060	0.315^b	0.046

Significant at ; means with different letters are statistically significantly different according to Tukey’s test.