Effects of Skeletally Supported Anterior en Masse Retraction with Varied Lever Arm Lengths and Locations in Lingual Orthodontic Treatment: A 3D Finite Element Study

Table 6

Initial tooth displacements following the application of retraction force (: +lingual, -labial; : +mesial, -distal; : +occlusal, -apical).

	Lever arm mesial to canine (μm)
	Miniscrew height: 8 mm
	Lever arm length: 6 mm						Lever arm length: 8 mm						Lever arm length: 10 mm
	Root	Crown	Root	Crown	Root	Crown	Root	Crown	Root	Crown	Root	Crown	Root	Crown	Root	Crown	Root	Crown
	Central incisor	-2.21	24.18	-21.63	25.17	41.31	32.87	-2.59	28.07	-18.18	-93.80	40.04	45.10	-2.90	24.20	-13.05	-262.33	111.17	167.42
Lateral incisor	-5.82	34.12	-18.54	26.93	41.86	32.96	-7.02	38.75	-16.27	-87.08	38.33	35.31	-8.75	35.45	-12.42	-238.36	95.53	14.34
Canine	6.71	-53.56	-11.14	21.52	-47.69	-41.91	6.11	-102.46	-6.79	-125.78	-41.96	-21.08	5.79	-160.09	-1.84	-255.45	-60.20	-77.20