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