Table 7.

Mean surface areas (mm²) and standard deviation of distolingual canal

	Before instrumentation						After instrumentation							Absolute change
n = 12	Coronal third		Middle third		Apical third		Coronal third		Middle third			Apical third		Coronal third		Middle third		Apical third
	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean		SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD
Group A	0.401	0.089	0.253	0.058	0.051	0.033	0.837	0.152	0.402		0.084	0.114	0.060	0.436	0.065	0.149	0.026	0.063	0.027
Group B	0.402	0.146	0.254	0.087	0.053	0.012	1.175	0.276	0.478		0.167	0.132	0.027	0.773	0.117	0.224	0.080	0.079	0.015
Group C	0.409	0.106	0.264	0.066	0.050	0.003	1.201	0.174	0.482		0.117	0.127	0.003	0.791	0.092	0.218	0.051	0.077	0.001
ANOVA test applied										F				4.313		6.344		0.8711
										p				0.0115(S)		0.005(S)		0.35(NS)

p < 0.05 = Significant (S= significant, NS= nonsignificant)