Table 5.
Comparison among the matching percentage between the mandibular models obtained with different semi-automatic segmentation software and the ground truth mandibular model (manual segmentation), according to the deviation analysis. p-value based on one-way ANOVA.
| Tolerance | Software | Sample | Mean | SD | Confidential Interval | F | Significance | |
|---|---|---|---|---|---|---|---|---|
| Lower Limit | Upper Limit | |||||||
| Tolerance A | ITK-Snap a | 20 | 88.44 b,c,d | 1.70 | 87.65 | 89.23 | 405.80 | p < 0.005 |
| Invesalius b | 20 | 81.79 a,c | 3.10 | 80.35 | 83.25 | |||
| Dolphin 3D c | 20 | 60.01 a,b,d | 3.10 | 58.57 | 61.47 | |||
| Slicer 3D d | 20 | 82.21 a,c | 2.90 | 80.86 | 83.57 | |||
| Total | 80 | 78.12 | 11.18 | 75.63 | 80.60 | - | - | |
| Tolerance B | ITK-Snap a | 20 | 97.30 b,c,d | 1.42 | 96.63 | 97.97 | 60.64 | p < 0.005 |
| Invesalius b | 20 | 90.19 a,c | 3.27 | 88.66 | 91.73 | |||
| Dolphin 3D c | 20 | 87.76 a,b,d | 2.50 | 86.60 | 88.93 | |||
| Slicer 3D d | 20 | 90.57 a,c | 1.76 | 89.75 | 91.40 | |||
| Total | 80 | 91.46 | 4.24 | 90.51 | 92.40 | - | - | |
a-b-c-d = symbols according to the Scheffè test for post-hoc multiple comparison. SD = Standard deviation. A = range of tolerance set at 0.2 mm; B = range of tolerance set at 0.5 mm.