Table 2 Root mean square error (RMSE) analysis of the sphere and cross geometries after alignments (n = 10) within the facial scan using a 3D scanner (Artec® Space Spider; Artec® Group; Luxembourg)
| Participant | RMSE sphere geometry [mm] | RMSE cross geometry [mm] |
|---|---|---|
| 1 | 0.39 | 0.33 |
| 2 | 0.19 | 0.46 |
| 3 | 0.25 | 0.43 |
| 4 | 0.23 | 0.35 |
| 5 | 0.35 | 0.37 |
| 6 | 0.39 | 0.37 |
| 7 | 0.25 | 0.25 |
| 8 | 0.36 | 0.29 |
| 9 | 0.41 | 0.41 |
| 10 | 0.34 | 0.32 |
| Mean (range) | 0.32 (0.19–0.41) | 0.36 (0.25–0.46) |
| p-value | p = 0.70 | |
