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Table 4 The initial displacement of the first and second molar (μm)

From: Comparison of one versus two maxillary molars distalization with iPanda: a finite element analysis

Force Tooth Landmark Displacement (μm)
x-axis y-axis z-axis
One molar Two molars One molar Two molars One molar Two molars
50 g First molar Mesiobuccal cusp 0.10 1.92 0.03 0.39 0.19 − 0.12
Palatal root 0.01 − 0.70 0.01 − 0.20 0.01 − 0.05
Distolingual cusp − 0.01 2.18 0.04 0.81 − 0.01 − 0.84
Second molar Mesiobuccal cusp 1.73 0.36 1.64 0.16 − 0.47 0.09
Mesiobuccal root − 0.63 − 0.04 − 0.35 0.07 − 0.09 0.07
Distolingual cusp 1.72 0.30 1.78 − 0.06 − 0.55 − 0.05
100 g First molar Mesiobuccal cusp 0.20 3.82 0.06 0.81 0.23 − 0.24
Mesiobuccal root 0.02 − 1.39 0.02 − 0.40 0.02 − 0.10
Distolingual cusp − 0.02 4.43 0.08 1.64 − 0.02 − 1.67
Second molar Mesiobuccal cusp 3.62 0.72 2.59 0.32 − 0.56 0.17
Mesiobuccal root − 1.34 − 0.08 − 0.47 0.13 − 0.33 0.15
Distolingual cusp 4.17 0.59 2.82 − 0.11 − 0.70 − 0.11
200 g First molar Mesiobuccal cusp 0.40 7.60 0.12 1.68 0.28 − 0.48
Mesiobuccal root 0.04 − 2.76 0.04 − 0.80 0.04 − 0.20
Distolingual cusp − 0.04 9.00 0.16 3.32 − 0.04 − 3.32
Second molar Mesiobuccal cusp 7.57 1.44 4.09 0.64 − 0.67 0.32
Mesiobuccal root − 2.85 − 0.16 − 0.63 0.24 − 1.21 0.32
Distolingual cusp 10.11 1.16 4.47 − 0.20 − 0.89 − 0.24
  1. X transverse axis, Y anteroposterior axis, Z vertical axis. A +x value was defined as the buccal direction, +y as the distal direction, and +z as the apical direction