Cone-beam computed tomographic analysis of apical transportation and centering ratio of ProTaper and XP-endo Shaper NiTi rotary systems in curved canals: an in vitro study

Table 1 Mean (± standard deviation) canal transportation in the mesiodistal and buccolingual directions in the two groups

Direction	Distance from working length	3 mm	4 mm	5 mm
Direction	Transportation	Mean(SD)	4 mm	5 mm
Mesiodistal	ProTaper	0.10(0.10)	0.12(0.08)	0.11(0.09)
	XP-endo Shaper	0.03(0.04)	0.03(0.03)	0.04(0.04)
	P value	0.015	00	0.004
Buccolingual	ProTaper	0.12(0.15)	0.16(0.11)	0.19(0.16)
	XP-endo Shaper	0.08(0.11)	0.08(0.13)	0.08(0.06)
	P value	0.324	0.037	0.004

ISSN: 1472-6831