Finite element analysis on pushing the molar backwards using invisible aligner with different migration displacement

• Autorzy: Zhang Jiwu , Ma Lili , Ren Yuzhongxiu , Zhou Yuqing , Wei Rong , Rong Qiguo

Identyfikatory

DOI

10.37190/ABB-02244-2023-04

• Języki publikacji: EN

Abstrakty

EN

This paper examines the biomechanical mechanism behind the effect of the invisible aligner technique on tooth movement processes. Methods: To compare the effects of different target positions on tooth movement and the periodontal ligament (PDL), two kinds of aligners were designed to provide displacements of 0.2 mm (Model A) and 0.3 mm (Model B). Different displacements of the maxillary second molar were simulated using the finite element (FE) method. Results: The results of numerical simulations showed that the maximum stress was in the PDL of the distal surface and the palatal surface. The stress of the PDL in Model B was larger than Model A, with the displacement of the second molar 0.027 mm in Model A, by 44.9% lesser than that in Model B. Conclusions: The aligner that provided a displacement of 0.2 mm was more suitable for pushing the second molar backward in the initial stage. During the tooth movement processes, the displacement of the crown was larger than that of the root and the displacement decreased gradually from the crown to the root. In addition, the displacement and rotation of teeth during orthodontic treatment were measured and analysed.

Słowa kluczowe

EN

invisible aligner; finite element analysis; orthodontic tooth movement; periodontal ligament

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2023
• Tom: Vol. 25, no. 2
• Strony: 115--123
• Opis fizyczny: Bibliogr. 36 poz., rys., tab., wykr.

Twórcy

autor

Zhang Jiwu

• Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, China

autor

Ma Lili

• Center of Stomatology, China Japan Friendship Hospital, Beijing, China

autor

Ren Yuzhongxiu

• Department of Stomatology, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China

autor

Zhou Yuqing

• Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, China

autor

Wei Rong

• Peking University Academy for Advanced Interdisciplinary Studies, Beijing, China

autor

Rong Qiguo

• Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).