Table 2.
Geometric deviations between the two imaging modalities (CBCT and MRI) were compared for all possible inter-rater combinations separately, for the implant tip, entry-level, and axis. Significant differences are marked in bold. * To avoid artificially increasing the study power, no statistical analysis of mean values was performed.
| Parameter | Rater Combination | Mean Difference between Modalities | 95% Confidence Interval |
p
-Value
(Bonferroni-Corrected) |
|---|---|---|---|---|
| Tip [mm] | Mean | 0.5 | (0.3, 0.7) | * |
| 1 vs. 2 | 0.4 | (−0.1, 1) | 0.033 | |
| 1 vs. 3 | 0.2 | (−0.3, 0.7) | 0.084 | |
| 1 vs. 4 | 0.6 | (0.1, 1.1) | <0.001 | |
| 2 vs. 3 | 0.2 | (−0.2, 0.6) | 0.399 | |
| 2 vs. 4 | 0.6 | (0.1, 1) | 0.669 | |
| 3 vs. 4 | 1.0 | (0.5, 1.5) | 1 | |
| Entry-level [mm] | Mean | 0.4 | (0.3, 0.6) | * |
| 1 vs. 2 | 0.5 | (0, 0.9) | 0.030 | |
| 1 vs. 3 | 0.3 | (−0.1, 0.7) | 0.156 | |
| 1 vs. 4 | 0.4 | (0, 0.8) | <0.001 | |
| 2 vs. 3 | 0.4 | (0.1, 0.6) | 0.147 | |
| 2 vs. 4 | 0.5 | (0.1, 0.8) | 0.060 | |
| 3 vs. 4 | 0.7 | (0.3, 1) | 0.399 | |
| Axis [°] | Mean | 1.4 | (0.7, 2.2) | * |
| 1 vs. 2 | 1.2 | (−0.8, 3.2) | 0.102 | |
| 1 vs. 3 | 1.0 | (−0.6, 2.6) | 0.012 | |
| 1 vs. 4 | 2.8 | (1, 4.6) | 0.039 | |
| 2 vs. 3 | −0.1 | (−2.1, 1.8) | 0.720 | |
| 2 vs. 4 | 1.7 | (0.1, 3.3) | 1 | |
| 3 vs. 4 | 2.2 | (0.5, 3.9) | 0.675 |