Table 1.

The means and standard deviations of the root dentin microhardness (VHN) and roughness (Sa) values for experimental and control groups.

Groups	n	Vickers Microhardness values	Roughness values
		(Mean ± SD)*	(Mean ± SD)*
Control (distilled water)	10	60.29 ± 2.20a	0.05 ± 0.01A
EDTA	10	49.00 ± 2.20b	0.24 ± 0.03B
Citric acid	10	44.46 ± 1.73c	0.44 ± 0.05C
Phytic acid	10	41.34 ± 1.99d	0.52 ± 0.06D
Phosphoric acid	10	40.52 ± 2.15d	0.55 ± 0.04D

Different letters indicate statistically significant difference at 5%.