Skip to main content


Table 4 Crown and root tipping in the mesial position of the mini screw

From: Maxillary anterior en masse retraction using different antero-posterior position of mini screw: a 3D finite element study

Movement Tooth Axis Height of anterior power arm
0 mm 3 mm 6 mm 9 mm
Crown Central Z 1.02E−06 6.14E−07 1.16E−08 −2.23E−07
Lateral Z 1.09E−06 7.32E−07 3.07E−08 −2.67E−07
Canine Z 8.74E−07 5.27E−07 8.10E−09 −1.69E−07
Central Y 1.05E−06 7.17E−07 5.03E−07 2.12E−07
Lateral Y 1.23E−06 7.46E−07 5.58E−07 2.53E−07
Canine Y 9.08E−07 6.37E−07 4.28E−07 1.49E−07
Apical Central Y −6.79E−07 −5.32E−07 −2.31E−07 1.02E−07
Lateral Y −7.49E−07 −5.97E−07 −3.03E−07 1.02E−07
Canine Y −6.60E−07 −4.22E−07 −1.26E−07 8.03E−08