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 5

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

	Lever arm mesial to canine (μm)
	Miniscrew height: 4.5 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	-2.66	21.19	-12.20	74.07	13.77	3.88	-2.97	23.42	-9.35	-26.77	71.95	90.17	-3.12	20.53	-5.11	-189.63	80.13	123.65
Lateral incisor	-5.71	44.54	-8.23	104.58	17.36	7.0	-6.68	46.38	-7.14	5.55	65.36	80.25	-7.99	43.20	-4.96	-146.69	70.42	101.86
Canine	10.84	-116.20	-8.65	124.93	-36.70	-5.16	9.45	-149.42	-3.73	26.89	-53.41	-65.62	8.77	-200.47	1.76	-106.26	-51.29	-44.27