Forces and moments applied during derotation of a maxillary central incisor with thinner aligners: An in-vitro study

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• 作者：Fayez Elkholy ; ^{fayez.elkholy@uni-ulm.de} ; Falko Schmidt ; Rudolf J&auml ; ger ; Bernd G. Lapatki
• 刊名：American Journal of Orthodontics and Dentofacial Orthopedics
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：151
• 期：2
• 页码：407-415
• 全文大小：1399 K
• 卷排序：151

文摘

Forces and moments applied even by the thinnest aligners are relatively high. New, thin levelling aligner sequence is proposed to reduce risk of root resorption. Aligners made of 0.3-mm PET-G foils deformed irreversibly during handling. Aligners made of 0.4 mm PET-G-aligner were sufficiently stable. Proposed aligner sequence combines low stiffness and nearly equal load increases. Different collateral forces and moments occur during central incisor derotation.