{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,13]],"date-time":"2026-08-13T20:40:38Z","timestamp":1786653638694,"version":"build-2736575974"},"reference-count":21,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"1","license":[{"start":{"date-parts":[[2025,3,1]],"date-time":"2025-03-01T00:00:00Z","timestamp":1740787200000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-sa\/4.0"}],"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"abstract":"<jats:sec>\n                    <jats:title>OBJECTIVE:<\/jats:title>\n                    <jats:p>The present study focused on evaluating and comparing the stresses and displacements generated by various designs of miniscrew-assisted maxillary expansion appliances. The primary focus of this study is on a modified design for treating unilateral maxillary constriction, analyzed using the finite element method (FEM).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>MATERIALS AND METHODS:<\/jats:title>\n                    <jats:p>Using computed tomography (CT) scans and the modeling software Mimics, a three-dimensional (3D) mesh model of the skull and related maxillary structures was created. First, the necessary material characteristics were determined using FEM. Three models of miniscrew-assisted maxillary expansion appliances were then tested with ANSYS simulation software: (a) a bone-anchored rapid palatal expander (BARPE), (b) a conventional miniscrew-assisted rapid palatal expansion (C-MARPE), and (c) an asymmetric design of a MARPE focusing on unilateral expansion (U-MARPE). The asymmetric U-MARPE design features an attachment connecting the expander to the teeth on only one half of the maxilla. The stress, displacement, and distribution predictions for all three types of expanders were subsequently evaluated via FEM.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>RESULTS:<\/jats:title>\n                    <jats:p>Tooth displacement in the U-MARPE (on the expander-to-tooth attachment side) and C-MARPE groups was greater than that in the BARPE group. The stresses on the teeth were lowest in the BARPE and U-MARPE groups (on the expander-to-no-tooth attachment side). C-MARPE exhibited a symmetrical stress distribution around the miniscrew areas. Overall, U-MARPE generated the greatest amount of asymmetric von Mises stress and displacement on the dental landmarks.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>CONCLUSION:<\/jats:title>\n                    <jats:p>This research indicates that, compared to other models, U-MARPE achieves more favorable unilateral expansion effects. The current U-MARPE design can be effectively used to correct unilateral transverse anomalies.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.4103\/jos.jos_71_24","type":"journal-article","created":{"date-parts":[[2025,3,28]],"date-time":"2025-03-28T14:48:27Z","timestamp":1743173307000},"update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":2,"title":["Evaluation of miniscrew-assisted maxillary expansion in the treatment of unilateral maxillary constriction: A finite element study"],"prefix":"10.4103","volume":"14","author":[{"given":"Shravan","family":"Shetty","sequence":"first","affiliation":[{"name":"Department of Orthodontics and Dentofacial Orthopedics, Manipal College of Dental Sciences Mangalore, Manipal Academy of Higher Education, Manipal, Karnataka, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Phad Sharad","family":"Trimbakrao","sequence":"additional","affiliation":[{"name":"Departments of Mechanical and Industrial Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Utkarsh","family":"Mangal","sequence":"additional","affiliation":[{"name":"Department of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Suraj","family":"Patil","sequence":"additional","affiliation":[{"name":"Departments of Mechanical and Industrial Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shah Mohammed Abdul","family":"Khader","sequence":"additional","affiliation":[{"name":"Departments of Mechanical and Industrial Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"MV","family":"Ashith","sequence":"additional","affiliation":[{"name":"Department of Orthodontics and Dentofacial Orthopedics, Manipal College of Dental Sciences Mangalore, Manipal Academy of Higher Education, Manipal, Karnataka, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Satish","family":"Shenoy","sequence":"additional","affiliation":[{"name":"Aeronautical and Automobile Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2025,3]]},"reference":[{"key":"R1-20250325","doi-asserted-by":"crossref","first-page":"567","DOI":"10.1016\/S0889-5406(00)70202-2","article-title":"Maxillary transverse deficiency","volume":"117","author":"McNamaraa","year":"2000","journal-title":"Am J Orthod Dentofacial Orthop"},{"key":"R2-20250325","doi-asserted-by":"crossref","first-page":"219","DOI":"10.1016\/0002-9416(70)90241-1","article-title":"Palatal expansion: Just the beginning of dentofacial orthopedics","volume":"57","author":"Haas","year":"1970","journal-title":"Am J Orthod"},{"key":"R3-20250325","doi-asserted-by":"crossref","first-page":"509","DOI":"10.1016\/0002-9416(73)90163-2","article-title":"A preliminary study of anterior maxillary displacement","volume":"63","author":"Dellinger","year":"1973","journal-title":"Am J Orthod"},{"key":"R4-20250325","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/0002-9416(78)90098-2","article-title":"Slow maxillary expansion: Skeletal versus dental response to low magnitude force in Macaca mulatta","volume":"73","author":"Cotton","year":"1978","journal-title":"Am J Orthod"},{"key":"R5-20250325","doi-asserted-by":"crossref","first-page":"310","DOI":"10.1016\/0002-9416(78)90207-5","article-title":"Midpalatal suture opening during functional posterior cross-bite correction","volume":"74","author":"Harberson","year":"1978","journal-title":"Am J Orthod"},{"key":"R6-20250325","doi-asserted-by":"crossref","first-page":"253","DOI":"10.2319\/030514-156.1","article-title":"Tooth-borne vs bone-borne rapid maxillary expanders in late adolescence","volume":"85","author":"Lin","year":"2015","journal-title":"Angle Orthod"},{"key":"R8-20250325","doi-asserted-by":"crossref","first-page":"65","DOI":"10.1093\/ejo\/6.1.65","article-title":"Early treatment of unilateral posterior crossbite in children with bilaterally contracted maxillae","volume":"6","author":"Schroder","year":"1984","journal-title":"Eur J Orthod"},{"key":"R9-20250325","doi-asserted-by":"crossref","first-page":"155","DOI":"10.1093\/ejo\/21.2.155","article-title":"The functional shift of the mandible in unilateral posterior crossbite and the adaptation of the temporomandibular joints: A pilot study","volume":"21","author":"Nerder","year":"1999","journal-title":"Eur J Orthod"},{"key":"R10-20250325","doi-asserted-by":"crossref","first-page":"28","DOI":"10.1016\/0278-2391(93)90007-Z","article-title":"Orthognathic surgery: The correction of dentofacial deformities","volume":"51","author":"Fish","year":"1993","journal-title":"J Oral Maxillofac Surg"},{"key":"R11-20250325","doi-asserted-by":"crossref","first-page":"85","DOI":"10.1007\/s10439-010-0125-0","article-title":"Application of optimization methodology and specimen-specific finite element models for investigating material properties of rat skull","volume":"39","author":"Guan","year":"2010","journal-title":"Ann Biomed Eng"},{"key":"R12-20250325","doi-asserted-by":"crossref","first-page":"437","DOI":"10.1093\/ejo\/cjn046","article-title":"Evaluation of craniofacial effects during rapid maxillary expansion through combined in vivo\/in vitro and finite element studies","volume":"30","author":"Provatidis","year":"2008","journal-title":"Eur J Orthod"},{"key":"R13-20250325","doi-asserted-by":"crossref","first-page":"245","DOI":"10.2319\/011214-40","article-title":"Asymmetric rapid maxillary expansion in true unilateral crossbite malocclusion: A prospective controlled clinical study","volume":"85","author":"Ileri","year":"2015","journal-title":"Angle Orthod"},{"key":"R14-20250325","doi-asserted-by":"crossref","first-page":"164","DOI":"10.1067\/mod.2002.125563","article-title":"Asymmetric maxillary expansion (AMEX) appliance for treatment of true unilateral posterior crossbite","volume":"122","author":"Toroglu","year":"2002","journal-title":"Am J Orthod Dentofacial Orthop"},{"key":"R15-20250325","first-page":"309","article-title":"Surgically assisted rapid maxillary expansion: A comparison of technique, response, and stability","volume":"67","author":"Northway","year":"1997","journal-title":"Angle Orthod"},{"key":"R16-20250325","doi-asserted-by":"crossref","first-page":"620","DOI":"10.1016\/j.ajodo.2018.05.024","article-title":"Three-dimensional evaluation of surgically assisted asymmetric rapid maxillary expansion","volume":"155","author":"Karabiber","year":"2019","journal-title":"Am J Orthod Dentofacial Orthop"},{"key":"R17-20250325","doi-asserted-by":"crossref","first-page":"325","DOI":"10.1016\/j.ijom.2019.08.011","article-title":"Surgically assisted rapid maxillary expansion: A systematic review of complications","volume":"49","author":"Carvalho","year":"2020","journal-title":"Int J Oral Maxillofac Surg"},{"key":"R18-20250325","doi-asserted-by":"crossref","first-page":"830","DOI":"10.1016\/j.ajodo.2007.10.065","article-title":"Miniscrew-assisted nonsurgical palatal expansion before orthognathic surgery for a patient with severe mandibular prognathism","volume":"137","author":"Lee","year":"2010","journal-title":"Am J Orthod Dentofacial Orthop"},{"key":"R19-20250325","doi-asserted-by":"crossref","first-page":"110","DOI":"10.1590\/2177-6709.22.1.110-125.sar","article-title":"Nonsurgical treatment of transverse deficiency in adults using Microimplant-assisted Rapid Palatal Expansion (MARPE)","volume":"22","author":"Brunetto","year":"2017","journal-title":"Dental Press J Orthod"},{"key":"R20-20250325","doi-asserted-by":"crossref","first-page":"531","DOI":"10.1093\/ejo\/cjs063","article-title":"Stress distribution and displacement by different bone-borne palatal expanders with microimplants: A three-dimensional finite-element analysis","volume":"36","author":"Lee","year":"2012","journal-title":"Eur J Orthod"},{"key":"R21-20250325","doi-asserted-by":"crossref","first-page":"81","DOI":"10.4041\/kjod.2018.48.2.81","article-title":"Evaluation of the effects of miniscrew incorporation in palatal expanders for young adults using finite element analysis","volume":"48","author":"Seong","year":"2018","journal-title":"Korean J Orthod"},{"key":"R22-20250325","doi-asserted-by":"crossref","first-page":"192","DOI":"10.5152\/TurkJOrthod.2020.20034","article-title":"Correction of unilateral posterior crossbite with U-MARPE","volume":"33","author":"Dzingle","year":"2020","journal-title":"Turk J Orthod"}],"container-title":["Journal of Orthodontic Science"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.ovid.com\/10.4103\/jos.jos_71_24","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,13]],"date-time":"2026-08-13T19:40:19Z","timestamp":1786650019000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ovid.com\/10.4103\/jos.jos_71_24"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,3]]},"references-count":21,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2025]]}},"URL":"https:\/\/doi.org\/10.4103\/jos.jos_71_24","relation":{},"ISSN":["2278-1897","2278-0203"],"issn-type":[{"value":"2278-1897","type":"print"},{"value":"2278-0203","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,3]]},"assertion":[{"value":"2024-07-03","name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-01-08","name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}}]}}