Maxillary molar distalization treated with clear aligners combined with mini-implants and angel button using different traction force: a finite element study

Jiayu Cui, Chengliang Yao, Zheyuan Zhang, Tong Zhang, Yuxin Cao, Ting Liu, Bing Li and Xiuping Wu

Computer Methods in Biomechanics and Biomedical Engineering, 2024, vol. 27, issue 3, 296-305

Abstract: ObjectivesTo evaluate the biomechanical system of molar distalization with clear aligner therapy (CAT) combined with angel button using interradicular mini-implants (IRMIs) with varying elastic forces.Materials and MethodsFE models including maxilla, complete maxillary dentition, periodontal ligaments (PDL), composite attachments, mini-implants (MI), and dedicated orthodontic aligner, were constructed. Three groups were created in accordance with the sagittal position of MI. Elastic forces (0 N,1 N,1.5 N,2 N) were applied.ResultsCAT without elastics caused labial tipping and intrusion of the anterior teeth. Initial labial tipping and the von Mises stress of the maxillary anterior teeth decreased as the elastic forces increased.

Date: 2024
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DOI: 10.1080/10255842.2023.2183735

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