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Table 1 Root mean square error (RMSE) analysis of the original standard tesselation language (.stl) files and the scanned counterfeits after virtual alignments (n = 5)

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]
10.230.33
20.280.34
30.230.35
40.240.35
50.240.40
Mean (range)0.24 (0.23–0.28)0.36 (0.33–0.40)
p-valuep < 0.008