J Shanghai Jiaotong Univ Sci

Journal of Shanghai Jiaotong University(Science) >

2021 , Vol. 26 >Issue 3: 383 - 390

DOI: https://doi.org/10.1007/s12204-021-2309-1

Medical 3D Printing and Personalised Medicine

Effect of Attachment on Movement Control of the Central Incisor Using Invisible Orthodontics: In-Silico Finite Element Analysis

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  • (School of Biomedical Engineering and Med-X Research Institute, Shanghai Jiao Tong University, Shanghai 200030, China;
    Department of Orthodontics, Shanghai Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University
    School of Medicine; National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology &
    Shanghai Research Institute of Stomatology, Shanghai 200011, China)

Online published: 2021-06-02

Supported by

the Clinical Research Program of Ninth
People’s Hospital affiliated to Shanghai Jiao Tong University
School of Medicine (No. JYLJ-10)

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Abstract

We aimed to study the influence of attachment on central incisor movement control using invisible  orthodontics with different translation or rotation targets. In this study, cone-beam computerised tomography  was used to scan one 15-year-old volunteer’s teeth. Three-dimensional models of the mandibular central incisor,  removable orthodontic appliance, and a rectangular attachment were reconstructed. A non-linear finite element  simulation was used to analyse the influence of attachment on the stress distribution of the periodontal ligament of  the central incisor under tooth rotation, mesial translation, and labial-lingual translation. For mandibular central  incisor correction, using rectangular attachments increased the translation by up to 9.6%, increased the maximum  stress on the periodontal ligament during the mesial translation correction, and reduced unwanted labial-lingual tilt  by up to 40% during the rotation of the tooth. However, wearing an attachment during labial-lingual translation  had no significant effect on the orthodontic results of the mandibular central incisor. In the mandibular central  incisor’s invisible orthodontic, the rectangular attachment appliance increased the displacement and alleviated the  side effect after applying mesial translation and tooth rotation. For labial-lingual translation, the application of a  rectangular attachment had no pronounced effect on the results. 

Cite this article

PAN Shengxuan (潘晟轩), ZOU Diyang (邹第洋), PAN Xiaogang(潘晓岗), TSAI Tsung-Yuan (蔡宗远) . Effect of Attachment on Movement Control of the Central Incisor Using Invisible Orthodontics: In-Silico Finite Element Analysis[J]. Journal of Shanghai Jiaotong University(Science), 2021 , 26(3) : 383 -390 . DOI: 10.1007/s12204-021-2309-1

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