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Table 3 Accuracy of the methods used for canal length determination through Intraclass Correlation Coefficient calculation and Bland-Altman analysis for natural and artificial anterior teeth

From: Use of artificial primary teeth for endodontic laboratory research: experiments related to canal length determination

Methods for canal length determination ICC (95% CI) Bland-Altman analysis
Mean difference Upper limit Lower limit
Natural anterior teeth (n = 30)
 Radiographic 0.882
(0.695 to 0.949)
−0.52 1.20 −2.23
 Mini Apex 0.962
(0.914 to 0.983)
0.22 1.20 −0.77
 Root ZX 0.945
(0.749 to 0.981)
0.42 1.42 −0.58
Artificial anterior teeth (n = 30)
 Radiographic 0.518
(−0.038 to 0.792)
−0.87 0.72 −2.45
 Mini Apex 0.644
(0.031 to 0.863)
0.66 1.90 −0.58
 Root ZX 0.617
(0.267 to 0.810)
0.43 1.86 −0.99
  1. ICC Intraclass correlation coefficients, 95% CI 95% confidence intervals