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采用无托槽隐形矫治器实现前牙最大内收的最佳力学设计的三维有限元分析。

Three-dimensional finite element analysis of the optimal mechanical design for maximum inward movement of the anterior teeth with clear aligners.

机构信息

Hefei Stomatological Hospital, Hefei, 230000, Anhui, People's Republic of China.

Wanan Medical College, Wuhu, 241000, Anhui, People's Republic of China.

出版信息

Sci Rep. 2024 Jun 8;14(1):13203. doi: 10.1038/s41598-024-63907-x.

DOI:10.1038/s41598-024-63907-x
PMID:38851833
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11162411/
Abstract

This study aims to refine clinical designs within clear aligner therapy, exploring the appropriate ratio of anterior tooth retraction to intrusion under maximum anchorage. Using a three-dimensional finite element model and evaluating 19 load scenarios with first premolar extraction, the research identifies the optimal force angle for anterior tooth retraction as 45 to 55°. For clinical planning, it is recommended to design a retraction of 0.19 mm combined with an intrusion of 0.16 mm to achieve anterior tooth retraction. This investigation is crucial for enhancing understanding of biomechanical principles in clear aligner orthodontics, offering significant insights for effective treatments.

摘要

本研究旨在完善明确矫正器疗法中的临床设计，探索最大支抗下前牙内收与压低的适宜比例。通过三维有限元模型并评估 19 个有第一前磨牙拔牙的加载情况，研究确定了前牙内收的最佳力角度为 45 至 55 度。对于临床规划，建议设计 0.19mm 的内收与 0.16mm 的压低相结合，以实现前牙内收。这项研究对于增强对透明矫正器正畸生物力学原理的理解至关重要，为有效治疗提供了重要的见解。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/221f/11162411/3b3ca1d9f170/41598_2024_63907_Fig7_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/221f/11162411/3b3ca1d9f170/41598_2024_63907_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/221f/11162411/df714fbc0eef/41598_2024_63907_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/221f/11162411/bb24d628968b/41598_2024_63907_Fig2_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/221f/11162411/8dca9241ea42/41598_2024_63907_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/221f/11162411/3b3ca1d9f170/41598_2024_63907_Fig7_HTML.jpg

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本文引用的文献

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Biomechanical effects of different staging and attachment designs in maxillary molar distalization with clear aligner: a finite element study.上颌磨牙远移中不同排齐及附件设计的生物力学影响：一项有限元研究。
Prog Orthod. 2023 Dec 4;24(1):43. doi: 10.1186/s40510-023-00493-0.
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Clear Aligner Orthodontics: What is the Evidence for their Efficacy?
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Using the appropriate modulus of elasticity of periodontal ligament matters in stress analysis of human first premolar tooth and periodontium structures.在人类第一前磨牙和牙周组织结构的应力分析中，使用合适的牙周膜弹性模量很重要。
Sci Rep. 2025 Jan 9;15(1):1549. doi: 10.1038/s41598-025-85578-y.
Clear 牙套正畸：它们的疗效有何证据？
Prim Dent J. 2023 Jun;12(2):69-75. doi: 10.1177/20501684231174122.
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