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.