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Three-dimensional finite element analysis of retracting pathological migration of the right upper central incisor with a clear aligner

Author

Listed:
  • Na Li
  • Chun Juan Wang
  • Yu Wang
  • DingGen Chen
  • Min Yang
  • HuiQin Li

Abstract

We aimed to explore the best orthodontic step distance of the right upper central incisor with mild, moderate, and severe pathological displacement achieved via a clear aligner. Three-dimensional models of maxilla-tooth-periodontal ligament clear aligner of the right upper central incisors with five different steps of 0.1, 0.125, 0.15, 0.165, 0.25 mm and three different alveolar bone heights were established via finite element analysis. We analysed the changing trends in initial displacement, the periodontal ligament, the alveolar bone, and apical stress of right upper central incisor. In the process of retraction, the right upper central incisor a movement trend of the crown deviating from the distal root to the mesial, and with the decrease of the height of the alveolar bone and the increase of the displacement, the crown would appear distal labial torsion with a deepening trend of vertical overlay.The maximum stress distribution of the periodontal ligament and alveolar bone showed a positive correlation. The overall stress distribution of the periodontal ligament and apical stress increased with decrease of alveolar bone height and the increase of alveolar bone displacement. In patients with mild, moderate, and severe pathological displacement of the right upper central incisor, the best step distance of anterior tooth retraction is 0.165, 0.15, and 0.125 mm, respectively.

Suggested Citation

  • Na Li & Chun Juan Wang & Yu Wang & DingGen Chen & Min Yang & HuiQin Li, 2024. "Three-dimensional finite element analysis of retracting pathological migration of the right upper central incisor with a clear aligner," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 27(16), pages 2325-2332, December.
  • Handle: RePEc:taf:gcmbxx:v:27:y:2024:i:16:p:2325-2332
    DOI: 10.1080/10255842.2023.2279011
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