Progress in Orthodontics

Table 3 Maximum and minimum principle stress values of the reference nodes from tooth apex (×10 ⁻⁴ N/mm )

From: 3D FEM comparison of lingual and labial orthodontics in en masse retraction

	Maximum principle stress		Minimum principle stress
	Labial	Lingual	Labial	Lingual
Central incisor	12.96	19.05	−21.92	−28.43
Lateral incisor	11.09	18.5	−20.12	−26.14
Canine	14.79	20.7	−12.56	−28.71
Second premolar	1.51	1.47	−3.35	−5.02
First molar mesial	0.78	1.69	−2.41	−3.12
First molar distal	14.23	3.14	−12.35	−3.38
Second molar mesial	0.51	0.73	−1.63	−1.39
Second molar distal	4.41	3.78	−2.84	−2.61

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