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

Table 5

Regression analysis to show linear correlation between the real length and estimated length in both techniques (digital radiography and CBCT) with different root curvatures.

		Real working length		value
		Digital paralleling technique			0.972	0.944	<0.001
	0.938		0.88	<0.001
CBCT		0.952	0.906	<0.001
		0.912	0.831	<0.001

and performed by linear regression analysis.