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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)

From: Simultaneous, radiation-free registration of the dentoalveolar position and the face by combining 3D photography with a portable scanner and impression-taking

ParticipantRMSE sphere geometry [mm]RMSE cross geometry [mm]
10.390.33
20.190.46
30.250.43
40.230.35
50.350.37
60.390.37
70.250.25
80.360.29
90.410.41
100.340.32
Mean (range)0.32 (0.19–0.41)0.36 (0.25–0.46)
p-valuep = 0.70