Table 1. Three-dimensional (3D) structural parameters of micro pores in the whole root canal system investigated by micro-CT.
| Sections | Groups | Number of samples (N) | Total ROI Volume (mm3) | Object (Dentine) Volume (mm3) | Volume of Closed Pores (mm3) | Surface of Closed Pores (mm2) | Volume of Open Pores (mm3) | Open Porosity (%) |
|---|---|---|---|---|---|---|---|---|
| Apical Third | AH Plus Sealer | 12 | 7.177 | 1.500 | 0.151a | 0.231a | 4.49a | 64.24a |
| BC Sealer | 12 | 7.400 | 1.420 | 0.115a | 0.189a | 6.24c | 73.86a | |
| Middle Third | AH Plus Sealer | 12 | 7.235 | 1.445 | 0.354b | 0.322b | 6.10b,c | 70.24a |
| BC Sealer | 12 | 7.960 | 1.330 | 0.408b | 0.431b | 6.84d | 83.25a,b | |
| Coronal Third | AH Plus Sealer | 12 | 7.383 | 1.358 | 0.620c | 0.636c | 6.32b,c | 75.39a,b |
| BC Sealer | 12 | 7.962 | 1.330 | 0.861c | 0.763c | 6.72d | 82.74b |
Same superscript letters indicate no statistical difference (p>0.05).
Different superscript letters indicate statistical significance (p<0.05).