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Table 3 Sums of standard deviation for the plaster casts and 3D prints and its standard deviation

From: Possibility of reconstruction of dental plaster cast from 3D digital study models

  Axis Std (WPM) + Std (WRR) Std (WPM -WRR) WPM-WRR WPM-WCP
for 3-3 x 0.58 0.25 −0.19 −0.21
for 3-6 y 0.16 0.36 −0.05 −0.07
for 3 z 0.16 0.17 0.11 0.22
for 3-1 mixed 0.16 0.15 0.03 0.05
  1. This table shows the sums of standard deviations for the plaster models (WPM), the RepRap 3D printed copies (WRR), and the values of standard deviation for the difference between the plaster models and the RepRap 3D printed copies. 3–3 means intercanine distance, x-plane, 3–6 means y-plane, 3 means clinical hightof crown of canine, 3–1 states for mixed plane. The second part of the table depicts the differences of the representative values of the measurements on the plaster models, the measurements on the RepRap 3D printed copies (WPM-WRR), the differences of the representative values of the measurements on the plaster models and the measurements on the commercial 3D printed copies (WPM-WCP).