{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T19:10:11Z","timestamp":1789413011751,"version":"build-2803163510"},"reference-count":33,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2021,9,23]],"date-time":"2021-09-23T00:00:00Z","timestamp":1632355200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002322","name":"Coordena\u00e7\u00e3o de Aperfei\u00e7oamento de Pessoal de N\u00edvel Superior","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100002322","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Orthod Craniofacial Res"],"published-print":{"date-parts":[[2022,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>This study aimed to assess the changes in third molars angulation and their available space after Class II subdivision malocclusion treatment with asymmetric premolar extractions.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The sample consisted of 37 patients (17 male, 20 female and mean age 13.18\u00a0\u00b1\u00a01.99\u00a0years) in group 1 (Type 1 Class II subdivision) and 25 (10 male, 15 female, mean age 13.56\u00a0\u00b1\u00a02.46\u00a0years) in group 2 (Type 2 Class II subdivision). In group 1, extractions were performed in the two maxillary quadrants and in the Class I mandibular quadrant. In group 2, extraction was performed in the Class II maxillary quadrant. Panoramic radiographs were used to evaluate third molar angulations and their available space pre\u2010 and post\u2010treatment. Radiographic measurements were performed with Dolphin<jats:sup>\u00ae<\/jats:sup> Imaging 11.9. Paired t tests were used for intragroup comparison between stages and sides.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>In Type 1, there were similar improvements in third molar angulations and increases in the space available on the extraction quadrants in the maxillary arch. In the mandibular arch, there was significantly greater improvement in angulation and greater space availability in the extraction quadrant after treatment. In Type 2, there was significantly greater improvement in angulation and available space for the maxillary third molar on the extraction quadrant. In the mandibular arch, there was a similar improvement in the available space for the third molars.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>After treatment, both groups presented better angulation and significantly greater space for third molar eruptions on the extraction quadrants, when compared to the homologous non\u2010extraction quadrants.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ocr.12530","type":"journal-article","created":{"date-parts":[[2021,8,17]],"date-time":"2021-08-17T08:39:11Z","timestamp":1629189551000},"page":"226-233","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Changes in third molar position after Class II subdivision malocclusion treatment with asymmetric extractions"],"prefix":"10.1111","volume":"25","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5969-5175","authenticated-orcid":false,"given":"Guilherme","family":"Janson","sequence":"first","affiliation":[{"name":"Department of Orthodontics. Bauru Dental School University of S\u00e3o Paulo  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8353-2384","authenticated-orcid":false,"given":"J\u00c3cssica","family":"F. Almeida","sequence":"additional","affiliation":[{"name":"Department of Orthodontics. Bauru Dental School University of S\u00e3o Paulo  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2529-2110","authenticated-orcid":false,"given":"Marcelo Vinicius","family":"Valerio","sequence":"additional","affiliation":[{"name":"Department of Orthodontics. Bauru Dental School University of S\u00e3o Paulo  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3743-7559","authenticated-orcid":false,"given":"Gonzalo","family":"Vel\u00e1squez","sequence":"additional","affiliation":[{"name":"Department of Orthodontics. Bauru Dental School University of S\u00e3o Paulo  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3963-1742","authenticated-orcid":false,"given":"Aron","family":"Aliaga\u2010Del Castillo","sequence":"additional","affiliation":[{"name":"Department of Orthodontics. Bauru Dental School University of S\u00e3o Paulo  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2449-1620","authenticated-orcid":false,"given":"Daniela","family":"Gamba Garib","sequence":"additional","affiliation":[{"name":"Department of Orthodontics. Bauru Dental School University of S\u00e3o Paulo  Brazil"},{"name":"Hospital for Rehabilitation of Craniofacial Anomalies University of S\u00e3o Paulo  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,9,23]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1079-2104(97)90359-0"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.joms.2016.10.035"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1834-7819.2005.tb00353.x"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/ocr.12468"},{"issue":"3","key":"e_1_2_10_6_1","first-page":"165","article-title":"The etiology and prediction of mandibular third molar impaction","volume":"47","author":"Richardson ME","year":"1977","journal-title":"Angle Orthod"},{"issue":"1","key":"e_1_2_10_7_1","first-page":"39","article-title":"Predicting angulational development and eruption of the lower third molar","volume":"48","author":"Haavikko K","year":"1978","journal-title":"Angle Orthod"},{"key":"e_1_2_10_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2006.03.002"},{"key":"e_1_2_10_9_1","doi-asserted-by":"publisher","DOI":"10.1067\/mod.2003.13"},{"key":"e_1_2_10_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/0889-5406(88)90191-6"},{"key":"e_1_2_10_11_1","doi-asserted-by":"publisher","DOI":"10.1067\/mod.2001.113267"},{"key":"e_1_2_10_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0889-5406(03)00406-2"},{"issue":"1","key":"e_1_2_10_13_1","article-title":"Orthodontic treatment of subdivision cases","volume":"4","author":"Janson G","year":"2003","journal-title":"World J Orthod"},{"key":"e_1_2_10_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2006.11.018"},{"issue":"5","key":"e_1_2_10_15_1","first-page":"719","article-title":"The effects of first premolar extractions on third molar angulations","volume":"75","author":"Saysel MY","year":"2005","journal-title":"Angle Orthod"},{"key":"e_1_2_10_16_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1834-7819.2009.01152.x"},{"key":"e_1_2_10_17_1","doi-asserted-by":"publisher","DOI":"10.1093\/ejo\/cjl031"},{"key":"e_1_2_10_18_1","volume-title":"Statistical methods for medical and biological students","author":"Dahlberg G","year":"1940"},{"key":"e_1_2_10_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1079-2104(99)70029-6"},{"key":"e_1_2_10_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.tripleo.2010.12.005"},{"key":"e_1_2_10_21_1","doi-asserted-by":"publisher","DOI":"10.5402\/2011\/406714"},{"key":"e_1_2_10_22_1","doi-asserted-by":"publisher","DOI":"10.1177\/028418518102203A14"},{"key":"e_1_2_10_23_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.joms.2004.05.217"},{"key":"e_1_2_10_24_1","doi-asserted-by":"publisher","DOI":"10.1034\/j.1600-0544.2000.030404.x"},{"key":"e_1_2_10_25_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jdent.2017.03.007"},{"issue":"3","key":"e_1_2_10_26_1","first-page":"153","article-title":"Some factors related to mandibular third molar impaction","volume":"45","author":"Kaplan RG","year":"1975","journal-title":"Angle Orthod"},{"key":"e_1_2_10_27_1","doi-asserted-by":"publisher","DOI":"10.2319\/120113-883.1"},{"issue":"3","key":"e_1_2_10_28_1","first-page":"226","article-title":"The early developmental position of the lower third molar relative to certain jaw dimensions","volume":"40","author":"Richardson ME","year":"1970","journal-title":"Angle Orthod"},{"key":"e_1_2_10_29_1","volume-title":"Impacted mandibular third molars","author":"Winter G","year":"1926"},{"issue":"9","key":"e_1_2_10_30_1","first-page":"330","article-title":"Impacted mandibular third molars: classification and modified technique for removal","volume":"39","author":"Pell GJ","year":"1933","journal-title":"Dental Digest"},{"key":"e_1_2_10_31_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2013.12.017"},{"key":"e_1_2_10_32_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0889-5406(99)70303-3"},{"issue":"6","key":"e_1_2_10_33_1","first-page":"480","article-title":"Vertical position, rotation, and tipping of molars without antagonists","volume":"13","author":"Kiliaridis S","year":"2000","journal-title":"Int J Prosthodont"},{"key":"e_1_2_10_34_1","doi-asserted-by":"publisher","DOI":"10.1038\/sj.bdj.4811082"}],"container-title":["Orthodontics &amp; 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