{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,6]],"date-time":"2026-07-06T13:47:26Z","timestamp":1783345646365,"version":"3.54.6"},"reference-count":31,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2020,10,19]],"date-time":"2020-10-19T00:00:00Z","timestamp":1603065600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Orthod Craniofacial Res"],"published-print":{"date-parts":[[2021,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>The aims of this study were (a) to evaluate the displacement and stress distribution in the maxillary dentition associated with the use of two different unilateral distalization appliances\u2014unilateral zygoma gear (UZG) appliance and asymmetric headgear (AHG)\u2014in non\u2010growing patients; and (b) to assess the effects of fully erupted maxillary third molars on the distalization of the first molar with both appliances by using three\u2010dimensional finite element analysis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Settings and sample population<\/jats:title><jats:p>Two 3D models of the maxilla were created: one with third molars and one without. Next, two distalizing appliances (UZG and AHG) were added to each model to create four models.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and methods<\/jats:title><jats:p>Distalization forces were applied, and the resultant displacements were recorded at the mesiobuccal and distolingual cusps and palatal root apex of each molar and the incisal edge root apex of the central incisors. The resulting von Mises stress distributions were evaluated.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>With the UZG, the first molar showed greater root distalization than the crown in the model with the third molar, whereas the model without the third molar showed distalization and distal tipping of the first molar. With the AHG, the first molar showed a large amount of distal tipping in the model without a third molar. However, this tipping was less than that in the model with third molars.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The presence of completely erupted third molars decreased the amount of uncontrolled distal tipping in both appliances. UZG can be considered as an effective option for maxillary molar distalization.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ocr.12430","type":"journal-article","created":{"date-parts":[[2020,10,1]],"date-time":"2020-10-01T16:49:06Z","timestamp":1601570946000},"page":"261-267","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["A 3D finite element analysis of maxillary molar distalization using unilateral zygoma gear and asymmetric headgear"],"prefix":"10.1111","volume":"24","author":[{"given":"Hala Sadek","family":"Alosman","sequence":"first","affiliation":[{"name":"Department of Orthodontics Near East University Nicosia Cyprus"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7314-1419","authenticated-orcid":false,"given":"Mohamed","family":"Bayome","sequence":"additional","affiliation":[{"name":"Department of Preventive Dentistry College of Dentistry King Faisal University Alhufuf Saudi Arabia"},{"name":"Department of Postgraduate Studies Universidad Auton\u00f3ma del Paraguay Asunci\u00f3n Paraguay"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Levent","family":"Vahdettin","sequence":"additional","affiliation":[{"name":"Department of Orthodontics Near East University Nicosia Cyprus"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,10,19]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1067\/mod.2002.120687"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9416(79)90159-3"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2004.07.040"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9416(81)90072-5"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1093\/ejo\/23.5.507"},{"key":"e_1_2_8_7_1","first-page":"396","article-title":"Nonextraction treatment","volume":"17","author":"Cetlin NM","year":"1983","journal-title":"J Clin Orthod"},{"key":"e_1_2_8_8_1","first-page":"167","article-title":"Unilateral distal molar movement with an implant\u2010supported distal jet appliance","volume":"72","author":"Karaman AI","year":"2002","journal-title":"Angle Orthod"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0889-5406(96)80041-2"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1055\/s-0039-1697365"},{"key":"e_1_2_8_11_1","first-page":"838","article-title":"Intraosseous screw\u2013supported upper molar distalization","volume":"74","author":"Gelg\u00f6r \u0130E","year":"2004","journal-title":"Angle Orthod"},{"key":"e_1_2_8_12_1","first-page":"471","article-title":"Bodily distalization of molars with absolute anchorage","volume":"73","author":"Keles A","year":"2003","journal-title":"Angle Orthod"},{"key":"e_1_2_8_13_1","first-page":"230","article-title":"Mini\u2010implant\u2010borne Pendulum B appliance for maxillary molar distalisation: design and clinical procedure","volume":"30","author":"Wilmes B","year":"2014","journal-title":"Aust Orthod J"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2018.12.017"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.4041\/kjod.2010.40.3.195"},{"key":"e_1_2_8_16_1","first-page":"31","article-title":"Effects of the maxillary molar distalization with zygoma\u2010gear appliance on maxillary third molars","volume":"25","author":"Celikoglu M","year":"2012","journal-title":"Turk J Orthod"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.2319\/091611-595.1"},{"key":"e_1_2_8_18_1","first-page":"412","article-title":"The zygoma\u2010gear appliance for maxillary molar distalization","volume":"52","author":"Patil H","year":"2018","journal-title":"J Clin Orthod"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2016.05.010"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2012.02.026"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.2319\/081612-658.1"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2005.08.036"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1093\/ejo\/13.3.231"},{"key":"e_1_2_8_24_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2009.03.057"},{"key":"e_1_2_8_25_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2011.06.031"},{"key":"e_1_2_8_26_1","doi-asserted-by":"publisher","DOI":"10.1055\/s-0039-1698925"},{"key":"e_1_2_8_27_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0889-5406(00)70254-X"},{"key":"e_1_2_8_28_1","doi-asserted-by":"publisher","DOI":"10.1179\/14653120723130"},{"key":"e_1_2_8_29_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0889-5406(98)70258-6"},{"key":"e_1_2_8_30_1","doi-asserted-by":"publisher","DOI":"10.4041\/kjod.2016.46.5.290"},{"key":"e_1_2_8_31_1","first-page":"584","article-title":"Dentofacial effects of asymmetric headgear and cervical headgear with removable plate on unilateral molar distalization","volume":"75","author":"Altug H","year":"2005","journal-title":"Angle Orthod"},{"key":"e_1_2_8_32_1","doi-asserted-by":"publisher","DOI":"10.1590\/2177-6709.24.2.41.e1-6.onl"}],"container-title":["Orthodontics &amp; Craniofacial Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/ocr.12430","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/ocr.12430","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/ocr.12430","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,8,28]],"date-time":"2023-08-28T12:56:07Z","timestamp":1693227367000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/ocr.12430"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,10,19]]},"references-count":31,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2021,5]]}},"alternative-id":["10.1111\/ocr.12430"],"URL":"https:\/\/doi.org\/10.1111\/ocr.12430","archive":["Portico"],"relation":{},"ISSN":["1601-6335","1601-6343"],"issn-type":[{"value":"1601-6335","type":"print"},{"value":"1601-6343","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,10,19]]},"assertion":[{"value":"2020-05-18","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2020-09-22","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2020-10-19","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}