Effect of power arm length combined with additional anterior torque on the axial orientation of the maxillary incisors during en-masse retraction: A finite element analysis

Zalaquett, Rime; Karam, Richard; Kaddah, Fouad; Khoury, Elie; El Khoury, Tony; Ghoubril, Joseph; Kassis, Adib

doi:10.1016/j.ajodo.2023.08.016

American Journal of Orthodontics and Dentofacial Orthopedics

2024

DOI: 10.1016/j.ajodo.2023.08.016

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Effect of power arm length combined with additional anterior torque on the axial orientation of the maxillary incisors during en-masse retraction: A finite element analysis

Rime Zalaquett,

Richard Karam,

Fouad Kaddah

et al.

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Cited by 2 publications

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Effect of archwire size and lever arm length on anterior and posterior teeth movement during en-masse retraction in personalized lingual orthodontics: A 3-dimensional finite element study

Lu,

Zhu,

et al. 2025

International Orthodontics

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Effect of archwire size and lever arm length on anterior and posterior teeth movement during en-masse retraction in personalized lingual orthodontics: A 3-dimensional finite element study

Lu,

Zhu,

et al. 2025

International Orthodontics

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Finite element analysis of the effects of different archwire forms and power arm positions on maxillary incisors in en masse retraction using fixed lingual orthodontic appliances

Tarkan,

Guvenc

2024

Korean J Orthod

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Finite element analysis of the effects of different archwire forms and power arm positions on maxillary incisors in en masse retraction using fixed lingual orthodontic appliancesObjective: This study aimed to investigate the effects of archwire form and power arm positions on maxillary incisors during lingual en masse retraction supported by miniscrew implants, using the finite element analysis method. Methods: Sliding mechanics for lingual en masse retraction were simulated using the finite element method. Power arms were placed mesial and distal to the maxillary canine with straight and mushroom-shaped archwires. Miniscrews provided absolute anchorage for retraction force. Results: When power arms were positioned mesial to the canine teeth, an increase in the intercanine distance was observed, while a decrease was noted when the power arms were distal to the canine tooth. Lateral incisors exhibited a greater torque loss, particularly when the power arm was mesial to the canine tooth. In the central incisors, the mushroom archwire resulted in intrusion, while the straight archwire showed an extrusion tendency. Movements in groups using the straight archwire were less controlled compared to those in groups using the mushroom archwire. Conclusions:The archwire form and the position of the power arm affected the torque loss and vertical position of incisors during lingual en masse retraction supported by miniscrew implants. The most controlled movement was achieved with the combination of a power arm positioned distal to the canine tooth and a mushroom archform.

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Effect of power arm length combined with additional anterior torque on the axial orientation of the maxillary incisors during en-masse retraction: A finite element analysis

Cited by 2 publications

References 30 publications

Effect of archwire size and lever arm length on anterior and posterior teeth movement during en-masse retraction in personalized lingual orthodontics: A 3-dimensional finite element study

Effect of archwire size and lever arm length on anterior and posterior teeth movement during en-masse retraction in personalized lingual orthodontics: A 3-dimensional finite element study

Finite element analysis of the effects of different archwire forms and power arm positions on maxillary incisors in en masse retraction using fixed lingual orthodontic appliances

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