Stress and movement trend of lower incisors with different IMPA intruded by clear aligner: a three-dimensional finite element analysis.

IF 4.8 2区 医学 Q1 Dentistry Progress in Orthodontics Pub Date : 2023-02-13 DOI:10.1186/s40510-023-00454-7
Yixin Li, Shengzhao Xiao, Yu Jin, Cheng Zhu, Ruomei Li, Yikan Zheng, Rongjing Chen, Lunguo Xia, Bing Fang
{"title":"Stress and movement trend of lower incisors with different IMPA intruded by clear aligner: a three-dimensional finite element analysis.","authors":"Yixin Li,&nbsp;Shengzhao Xiao,&nbsp;Yu Jin,&nbsp;Cheng Zhu,&nbsp;Ruomei Li,&nbsp;Yikan Zheng,&nbsp;Rongjing Chen,&nbsp;Lunguo Xia,&nbsp;Bing Fang","doi":"10.1186/s40510-023-00454-7","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>During the intrusion of lower incisors with clear aligners (CAs), root disengagement from the alveolar bone often occurs, resulting in serious complications. This study aimed to determine the potential force mechanism of the mandibular anterior teeth under the pressure of CA, providing theoretical data for clinical practice.</p><p><strong>Methods: </strong>In this study, a 3D finite element model was established, including the CA, periodontal ligament, and mandibular dentition. Incisor mandibular plane angles were set as 5 groups: 90°, 95°, 100°, 105°, and 110°. The 4 mandibular incisors were intruded by 0.2 mm, while the canines were the anchorage teeth. The stress, force systems, and potential movement trends of mandibular anterior teeth were obtained.</p><p><strong>Results: </strong>The compressive stress of the incisors was concentrated in the lingual fossa, incisal ridge, and apex. With the increase in IMPA, the moment of central incisors changed from lingual crown moment to labial crown moment, with the turning point between 100° and 105°, but the center of resistance (CR) was always subjected to the force toward the lingual and intrusive direction. The force and moment toward the labial side of the lateral incisors were greater than those toward the central incisors. The canines always tipped distally and received extrusive force with no relationship with IMPA.</p><p><strong>Conclusions: </strong>With the increase in the initial IMPA, the direction of labiolingual force on the mandibular incisors was reversed. However, the root of the lower incisors always tipped labially, which indicated fenestration and dehiscence.</p>","PeriodicalId":56071,"journal":{"name":"Progress in Orthodontics","volume":null,"pages":null},"PeriodicalIF":4.8000,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9922685/pdf/","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Progress in Orthodontics","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1186/s40510-023-00454-7","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Dentistry","Score":null,"Total":0}
引用次数: 3

Abstract

Background: During the intrusion of lower incisors with clear aligners (CAs), root disengagement from the alveolar bone often occurs, resulting in serious complications. This study aimed to determine the potential force mechanism of the mandibular anterior teeth under the pressure of CA, providing theoretical data for clinical practice.

Methods: In this study, a 3D finite element model was established, including the CA, periodontal ligament, and mandibular dentition. Incisor mandibular plane angles were set as 5 groups: 90°, 95°, 100°, 105°, and 110°. The 4 mandibular incisors were intruded by 0.2 mm, while the canines were the anchorage teeth. The stress, force systems, and potential movement trends of mandibular anterior teeth were obtained.

Results: The compressive stress of the incisors was concentrated in the lingual fossa, incisal ridge, and apex. With the increase in IMPA, the moment of central incisors changed from lingual crown moment to labial crown moment, with the turning point between 100° and 105°, but the center of resistance (CR) was always subjected to the force toward the lingual and intrusive direction. The force and moment toward the labial side of the lateral incisors were greater than those toward the central incisors. The canines always tipped distally and received extrusive force with no relationship with IMPA.

Conclusions: With the increase in the initial IMPA, the direction of labiolingual force on the mandibular incisors was reversed. However, the root of the lower incisors always tipped labially, which indicated fenestration and dehiscence.

Abstract Image

Abstract Image

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
不同IMPA下门牙被清晰矫正器侵入的应力和运动趋势:三维有限元分析。
背景:下门牙植入牙槽骨矫正器(ca)时,经常发生牙根与牙槽骨脱离,导致严重的并发症。本研究旨在探讨下颌前牙在CA压力下的潜在受力机制,为临床实践提供理论依据。方法:建立CA、牙周韧带、下颌牙列三维有限元模型。切下颌平面角设为90°、95°、100°、105°、110°5组。4个下切牙内嵌0.2 mm,犬齿为支抗牙。获得了下颌前牙的应力、受力系统和潜在的运动趋势。结果:切牙的压应力主要集中在舌窝、切脊和牙尖。随着IMPA的增加,中切牙的弯矩由舌冠弯矩转变为唇冠弯矩,弯矩在100°~ 105°之间,但阻力中心(CR)始终受到向舌突方向的作用力。侧切牙朝向唇侧的力和力矩大于中切牙朝向唇侧的力和力矩。犬齿总是向远端倾斜并受到挤压力,与IMPA无关。结论:随着初始内压的增加,下切牙唇舌受力方向发生逆转。但下门牙的牙根总是向唇尖倾斜,这表明开窗和开裂。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Progress in Orthodontics
Progress in Orthodontics Dentistry-Orthodontics
CiteScore
7.30
自引率
4.20%
发文量
45
审稿时长
13 weeks
期刊介绍: Progress in Orthodontics is a fully open access, international journal owned by the Italian Society of Orthodontics and published under the brand SpringerOpen. The Society is currently covering all publication costs so there are no article processing charges for authors. It is a premier journal of international scope that fosters orthodontic research, including both basic research and development of innovative clinical techniques, with an emphasis on the following areas: • Mechanisms to improve orthodontics • Clinical studies and control animal studies • Orthodontics and genetics, genomics • Temporomandibular joint (TMJ) control clinical trials • Efficacy of orthodontic appliances and animal models • Systematic reviews and meta analyses • Mechanisms to speed orthodontic treatment Progress in Orthodontics will consider for publication only meritorious and original contributions. These may be: • Original articles reporting the findings of clinical trials, clinically relevant basic scientific investigations, or novel therapeutic or diagnostic systems • Review articles on current topics • Articles on novel techniques and clinical tools • Articles of contemporary interest
期刊最新文献
The role of orthodontists in the multidisciplinary management of obstructive sleep apnea. Polymerization kinetics of 3D-printed orthodontic aligners under different UV post-curing conditions. Comparison of AI-assisted cephalometric analysis and orthodontist-performed digital tracing analysis. Prevalence of psychosocial findings and their correlation with TMD symptoms in an adult population sample. Breaking a dogma: orthodontic tooth movement alters systemic immunity.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1