前牙在不同附件设计和移动步距下的有限元分析

doi:10.13701/j.cnki.kqyxyj.2025.11.011

口腔医学研究 ›› 2025, Vol. 41 ›› Issue (11): 987-992.DOI: 10.13701/j.cnki.kqyxyj.2025.11.011

前牙在不同附件设计和移动步距下的有限元分析

潘研^1,2, 刘昕^1,2*, 陈精诚³, 张吉利^2,4, 胡亚男², 张迁^1,2

1.安徽医科大学合肥口腔临床学院安徽合肥 230061;
2.合肥市口腔医院正畸二科安徽合肥 230001;
3.嘉兴市南湖区人民医院口腔科浙江嘉兴 314000;
4.皖南医学院口腔医学院安徽芜湖 241000

收稿日期:2025-04-16 出版日期:2025-11-28 发布日期:2025-11-25
通讯作者: *刘昕,E-mail:1760001746@qq.com
作者简介:潘研(1999~ ),女,安徽滁州人,医师,硕士,研究方向:口腔正畸学。

Finite Element Analysis of Anterior Teeth under Different Attachment Designs and Movement Distance

PAN Yan^1,2, LIU Xin^1,2*, CHEN Jingchen³, ZHANG Jili^2,4, HU Yanan², ZHANG Qian^1,2

1. Hefei Clinical School of Stomatology, Anhui Medical University, Hefei 230061, China;
2. Department of Orthodontics Ⅱ, Hefei Stomatological Hospital, Hefei 230001, China;
3. Department of Dentistry, Jiaxing Nanhu District People’s Hospital, Jiaxing 314000, China;
4. School of Stomatology, Wannan Medical College, Wuhu 241000, China

Received:2025-04-16 Online:2025-11-28 Published:2025-11-25

摘要/Abstract

摘要： 目的: 研究不同移动步距和附件设计下,使用无托槽隐形矫治器向近中移动下颌第一磨牙时对前牙的影响。方法: 选取1名成年患者的CBCT影像学数据,建立有限元模型,模拟不同移动步距和附件设计下,隐形矫治器近移下颌第一磨牙的三维有限元模型,分析比较前牙力学结果的差异。结果: 在不同移动步距和附件设计下,前牙均呈现出牙冠远中向移动和牙根近中、唇向移动的倾向。下颌侧切牙和尖牙均表现为冠舌向倾斜。随着移动步距增大,前牙表现为压低趋势,移动步距越大,压低倾向更加显著。结论: 随着后牙近移的移动步距增加,前牙支抗更易丢失;对于近中移动磨牙固位加强,其对前牙反作用力更加显著。在磨牙近移时应对前牙设计转矩补偿,有效控制前牙转矩。

关键词: 三维有限元, 移动步距, 隐形矫治器

Abstract: Objective: To study the influence of different moving distances and attachment designs on anterior teeth when the mandibular first molar was mesial moved with clear aligner. Methods: Cone beam computed tomography (CBCT) imaging data from an adult patient were selected and established physical model to simulate the mesial movement of the posterior teeth under different moving distances and attachment designs, and the influence on anterior teeth was analyzed. Results: Under different moving distances and attachment designs, the anterior teeth consistently exhibited a tendency that the crown was inclined to move to the distal side and the root to the mesial and labial sides. Both mandibular lateral incisors and canines showed lingual crown inclination. As the moving distance increased, the anterior teeth displayed a trend of intrusion, with greater intrusion observed at larger moving distances. Conclusion: Anterior anchorage is more likely to be lost as the moving distance of posterior teeth increases. Additionally, greater attachment retaining force results in stronger reaction forces on anterior teeth. The torque compensation for anterior teeth should be designed to effectively control the torque of anterior teeth during molar mesial movement.

Key words: three-dimensional finite element, movement distance, clear aligners

潘研, 刘昕, 陈精诚, 张吉利, 胡亚男, 张迁. 前牙在不同附件设计和移动步距下的有限元分析[J]. 口腔医学研究, 2025, 41(11): 987-992.

PAN Yan, LIU Xin, CHEN Jingchen, ZHANG Jili, HU Yanan, ZHANG Qian. Finite Element Analysis of Anterior Teeth under Different Attachment Designs and Movement Distance[J]. Journal of Oral Science Research, 2025, 41(11): 987-992.

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前牙在不同附件设计和移动步距下的有限元分析

Finite Element Analysis of Anterior Teeth under Different Attachment Designs and Movement Distance

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