Quantitative Analysis of Cone-Beam Computed Tomography Artifacts Induced by Nonmetallic Root Canal Filling Materials Using Different Fields of View: In Vitro Study

Table 2

Paired -test for pre- and postobturation scans in the apical third.

Material	FOV	Value	Mean	Std. dev.	Std. error	95% confidence interval of the difference			df	Sig.
						Lower	Upper
Gutta-percha		Min	23.700	20.066	6.345	9.345	38.054	3.735	9	0.005
		Max	-3.400	6.16	1.950	-7.812	1.012	-1.743	9	0.115
		Skew.	0.284	1.457	0.461	-0.758	1.326	0.616	9	0.553
		Min	12.300	28.158	8.904	-7.843	32.443	1.381	9	0.201
		Max	5.700	7.931	2.508	0.0265	11.373	2.273	9	0.049
		Skew.	-0.114	1.297	0.410	-1.043	0.813	-0.280	9	0.786
MTA		Min	-4.500	25.526	8.072	-22.760	13.760	-0.557	9	0.591
		Max	-1.000	8.055	2.547	-6.762	4.762	-0.393	9	0.704
		Skew.	0.270	0.814	0.257	-0.312	0.852	1.049	9	0.321
		Min	1.000	28.087	8.881	-19.092	21.092	0.113	9	0.913
		Max	0.000	8.666	2.740	-6.199	6.199	0.000	9	1.000
		Skew.	-0.442	0.678	0.214	-0.927	0.042	-2.063	9	0.069

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