Tooth movement with clear aligners with different elastic modulus: a three-dimensional finite element analysis

Tooth movement with clear aligners with different elastic modulus: a three-dimensional finite element analysis | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Tooth movement with clear aligners with different elastic modulus: a three-dimensional finite element analysis Qin Niu, Wenhsuan Lu, Rushui Bai, Xin Tong, Yang Yao, Lei Tian, and 4 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4913756/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Background Compared with traditional fixed appliances, clear aligners (CAs) still lack the ability to accurately control the three-dimensional tooth movement. The present study was devoted to the comparison of treatment outcomes of CAs diaphragms with different elastic modulus and to explore the improvement of the tooth movement efficiency for CAs. Methods In present study, the three-dimensional finite element analysis was used to explore the tooth movement effect resulted from CAs with different elastic modulus in five orthodontic treatment conditions (translation, rotation, torque control, root control and extrusion) on a single tooth model. Results For translation, the diaphragm M04 with an elastic modulus of 2086.47 MPa performed relatively well. For rotation, torque control and extrusion, the tooth movement efficiency increased with the elevation of the elastic modulus. However, none of the diaphragms showed ideal results for root control. Additionally, under the same working condition, the greater the elastic modulus of the CA diaphragm, the greater the initial force on the tooth and the periodontal supporting tissue stress. Conclusions Diaphragms with different elastic modulus should be used to fabricate CAs to achieve better tooth movement in various tooth movement conditions. In the initial stages of tooth movement, CAs with smaller elastic modulus can be used to reduce the initial force on the teeth, and then CAs with larger elastic modulus can be applied to avoid adverse tooth movement, such as the “roller coaster” effect. Clear aligners Elastic modulus Von Mises stress of periodontal membrane Finite element analysis Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4913756","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":352898502,"identity":"ea9c69f1-63d9-4427-9521-d18a96c5fdfe","order_by":0,"name":"Qin Niu","email":"","orcid":"","institution":"Peking University Stomatological Hospital","correspondingAuthor":false,"prefix":"","firstName":"Qin","middleName":"","lastName":"Niu","suffix":""},{"id":352898503,"identity":"433d2a94-de61-431b-a58e-a0670b3afd73","order_by":1,"name":"Wenhsuan Lu","email":"","orcid":"","institution":"Peking University Stomatological 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analysis","lastPublishedDoi":"10.21203/rs.3.rs-4913756/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4913756/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003ch2\u003eBackground\u003c/h2\u003e \u003cp\u003eCompared with traditional fixed appliances, clear aligners (CAs) still lack the ability to accurately control the three-dimensional tooth movement. The present study was devoted to the comparison of treatment outcomes of CAs diaphragms with different elastic modulus and to explore the improvement of the tooth movement efficiency for CAs.\u003c/p\u003e\u003ch2\u003eMethods\u003c/h2\u003e \u003cp\u003eIn present study, the three-dimensional finite element analysis was used to explore the tooth movement effect resulted from CAs with different elastic modulus in five orthodontic treatment conditions (translation, rotation, torque control, root control and extrusion) on a single tooth model.\u003c/p\u003e\u003ch2\u003eResults\u003c/h2\u003e \u003cp\u003eFor translation, the diaphragm M04 with an elastic modulus of 2086.47 MPa performed relatively well. For rotation, torque control and extrusion, the tooth movement efficiency increased with the elevation of the elastic modulus. However, none of the diaphragms showed ideal results for root control. Additionally, under the same working condition, the greater the elastic modulus of the CA diaphragm, the greater the initial force on the tooth and the periodontal supporting tissue stress.\u003c/p\u003e\u003ch2\u003eConclusions\u003c/h2\u003e \u003cp\u003eDiaphragms with different elastic modulus should be used to fabricate CAs to achieve better tooth movement in various tooth movement conditions. In the initial stages of tooth movement, CAs with smaller elastic modulus can be used to reduce the initial force on the teeth, and then CAs with larger elastic modulus can be applied to avoid adverse tooth movement, such as the \u0026ldquo;roller coaster\u0026rdquo; effect.\u003c/p\u003e","manuscriptTitle":"Tooth movement with clear aligners with different elastic modulus: a three-dimensional finite element analysis","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-09-13 15:38:06","doi":"10.21203/rs.3.rs-4913756/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"3e5c4ff5-350c-4c00-9776-23c1835368ad","owner":[],"postedDate":"September 13th, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2025-02-11T06:08:45+00:00","versionOfRecord":[],"versionCreatedAt":"2024-09-13 15:38:06","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-4913756","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-4913756","identity":"rs-4913756","version":["v1"]},"buildId":"qtupq5eGEP_6zYnWcrvyt","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}