Table 2.

Means and standard deviations of microtensile bond strength (MPa) for all experimental groups

	Commercial	Exp0%	Exp2%	Exp5%
24 h	32.4 (15.8) aA	36.2 (14.3) aA	28.7 (11.0) aA	15.5 (9.0) bA
6 months	26.0 (10.4) bA	40.1 (15.0) aA	31.1 (14.6) abA	14.3 (6.8) bA
1 year	28.11 (13.05) abA	29.5 (15.0) abA	34.6 (12.24) aA	13.9 (14.39) bA

Different letters (lowercase in rows and uppercase in columns) indicate statistically significant differences (Kruskal-Wallis, Dunn, p < 0.05).