Table 2.

Inter-examiner agreement (Fleiss kappa values, and 95% confidence intervals [CI]) for CBCT and DPR

	CBCT	DPR
	Kappa (95% CI)	Kappa (95% CI)
Periapical lesion (yes/no)	0.955 (0.928; 0.977)	0.904 (0.863; 0.938)
Size of periapical radiolucency	0.962 (0.937; 0.983)	0.906 (0.87; 0.937)
Relationship between root and radiolucency	0.948 (0.922; 0.971)	0.899 (0.864; 0.932)
Location of bone destruction	0.966 (0.939; 0.985)	0.911 (0.874; 0.942)
Root canal obturation (yes/no)	0.987 (0.954; 1)	0.967 (0.918; 1)
Obturation length, mm	0.982 (0.966; 0.992)	0.96 (0.937; 0.977)
Obturation homogeneity	0.982 (0.961; 0.993)	0.928 (0.895; 0.956)
Coronal seal (yes/no)	1	1
Coronal seal (adequate/inadequate)	0.913 (0.866; 0.949)	0.763 (0.693; 0.827)
Complications (yes/no)	0.96 (0.935; 0.981)	0.833 (0.782; 0.874)
Root perforation	0.189 (-0.021; 0.401)	1
Root canal not treated/missed	1	1
Root resorption	1	1
Root/tooth fracture	1	1
Endodontically treated root with radiolucency	0.969 (0.946; 0.989)	0.888 (0.844; 0.926)
Instrument fractures	1	1
Post inside the root canal	0.938 (0.865; 0.987)	0.951 (0.876; 1)

Inter-examiner agreement (Fleiss kappa values, and 95% confidence intervals [CI]) for CBCT and DPR

Fleiss kappa (statistically significant at the level P ≤ 0.05).

CBCT = cone-beam computed tomography; DPR = digital periapical radiography.