Preoperative Estimation of Endodontic Working Length with Cone-Beam Computed Tomography and Standardized Paralleling Technique in comparison to Its Real Length

Table 3

Comparison between the measurements obtained by digital paralleling and CBCT techniques within a range of 0.5 mm difference from the gold standard.

		Accuracy of digital paralleling technique by 0.5 mm		Total	value
		Yes	No
Accuracy of CBCT by 0.5 mm	Yes	17	16	33	0.59
	No	12	15	27
Total		29	31	60

Chi-square test. Not significant.