Table 1.

Canal transportation values in the tested groups at three levels. Negative and positive values mean the transportation was toward the outer and inner sides, respectively.

Level	System	Mean	Std. deviation	P value
0 mm	WOG	−0.0154	0.03278	>0.05
	XPS	−0.0068	0.03482
3 mm	WOG	0.0354	0.05977	>0.05
	XPS	0.0434	0.05660
6 mm	WOG	−0.0326	0.07617	>0.05
	XPS	−0.0346	0.09365