Table 2.

Comparison of the experimental stages within the same group and among the different groups

		Duraphat				ProArgin				Control
		S1	S2	S3	S4	S1	S2	S3	S4	S1	S2	S3	S4
Duraphat®	S1		**
	S2			*	*
	S3							*
	S4												*
ProArgin®	S1
	S2							***	***
	S3			*								***
	S4												***
Control	S1											*	***
	S2												*
	S3							***
	S4				*				***

Evaluation of the differences in permeability values after each stage into the same group -Friedman and Dunn’s posttest - * = p < 0.05, *** = p < 0.001.

Evaluation of the different stages among the groups - Kruskal-Wallis and Dunn’s post-test - * = p < 0.05, ** = p < 0.01 and *** = p < 0.001.