Table 1.
Comparison of WL changes and the presence of voids according to three diagnostic imaging methods and tests of performance and reliability compared with µCT
| Diagnostic methods | Obturation technique | Diagnostic tests | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| CL | SC | TMC | pa | κ concordance | Sensitivity | Specificity | Accuracy | |||
| WL | µCT | 1(6.7%) | 2(13.3%) | 2(13.3%) | 0.001 | – | – | – | – | |
| OCT | 0(0.0%) | 0(0.0%) | 1(6.7%) | 0.737 | 97% | 73% | 89% | |||
| Radiography | 1(6.7%) | 0(0.0%) | 4(26.7%) | 0.125 | 97% | 13% | 69% | |||
| Voids | µCT | 14(93.3%) | 6(40%) | 1(6.7%) | 0.000 | – | – | – | – | |
| OCT | 11(73.3%) | 4(26.6%) | 1(6.7%) | 0.684 | 96% | 71% | 84% | |||
μCT, computerized microtomography; CL, lateral condensation; OCT, optical coherence tomography; SC, single cone; TMC, thermomechanical compaction; WL, working length.
aFisher’s exact test.