{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T21:50:15Z","timestamp":1788990615976,"version":"build-2803163510"},"reference-count":29,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2022,9,25]],"date-time":"2022-09-25T00:00:00Z","timestamp":1664064000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/100005648","name":"American Association of Orthodontists Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100005648","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":[[2023,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To explore alveolar cortical positional change in response to tooth movement in extraction and non\u2010extraction orthodontic cases, using cone\u2010beam computed tomography (CBCT) and stable extra\u2010alveolar references.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>The pre\u2010treatment (T1) and post\u2010treatment (T2) CBCT scans of 25 extraction (EXT) and matched 25 non\u2010extraction (Non\u2010EXT) orthodontic cases were imported into Dolphin Imaging 3D, and oriented uniformly. Sagittal and axial CBCT cross\u2010sections were traced using customized software\u2010generated guides. The displacement of teeth and alveolar bone cortices were automatically measured using the palatal plane (PP) and the line perpendicular to PP and passing Sella as reference. Intra\u2010 and inter\u2010group differences between T1 and T2 were analysed. Subjects were also superimposed three\u2010dimensionally using Geomagic Control X for qualitative analysis of cortical remodelling.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The EXT group showed incisor retraction, while the Non\u2010EXT group exhibited statistically significant incisor anterior tipping (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.05). In EXT, both the labial and palatal cortices are resorbed. Non\u2010EXT showed labial cortex anterior modelling, and statistically significant palatal cortex resorption (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.05). In both groups, statistically significant decrease in total and palatal alveolar widths, increase in labial widths, and palatal dehiscence were observed. Comparatively, EXT showed significantly more incisal total and palatal width decrease and palatal vertical bone loss.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Labial cortical remodelling was shown to follow anterior tooth movement, but the palatal cortical response to incisor retraction and labial cortical remodelling in general remained inconclusive. Narrowing of the alveolar housing and palatal dehiscence were observed regardless of extraction following orthodontic treatment.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ocr.12609","type":"journal-article","created":{"date-parts":[[2022,9,15]],"date-time":"2022-09-15T05:23:26Z","timestamp":1663219406000},"page":"265-276","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["<scp>Cone\u2010beam<\/scp> computed tomography assessment of maxillary anterior alveolar bone remodelling in extraction and <scp>non\u2010extraction<\/scp> orthodontic cases using stable <scp>extra\u2010alveolar<\/scp> reference"],"prefix":"10.1111","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7689-6486","authenticated-orcid":false,"given":"Chih Yau Michael","family":"Yang","sequence":"first","affiliation":[{"name":"Department of Orthodontics, College of Dentistry University of Illinois Chicago  Chicago IL 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