{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,23]],"date-time":"2026-06-23T08:12:46Z","timestamp":1782202366393,"version":"3.54.5"},"reference-count":21,"publisher":"Springer Science and Business Media LLC","issue":"19","license":[{"start":{"date-parts":[[2024,8,26]],"date-time":"2024-08-26T00:00:00Z","timestamp":1724630400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2024,8,26]],"date-time":"2024-08-26T00:00:00Z","timestamp":1724630400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Aesth Plast Surg"],"published-print":{"date-parts":[[2024,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n                <jats:title>Objective<\/jats:title>\n                <jats:p>The aim of this study was to quantitatively evaluate morphological and volumetric changes in the masseter muscle using 3-dimensional analysis of facial asymmetry patients and to identify factors influencing these changes before and after orthognathic surgery.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>[Reviewer1 (2)]A single-center retrospective cohort study was conducted on twenty-two patients with deviation of the chin\u2009&gt;\u20094\u00a0mm. Masseter muscle volume and morphology were measured at different periods during long-term follow-up (mean 15\u2009\u00b1\u20093.2\u00a0months). Factors related to changes in masseter muscle cross-sectional area and volume analyzed were also analyzed.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>[Reviewer1 (2) and (9)]The volume and cross-sectional area of the masseter muscle on the non-deviated side reduced by 13.5% (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05) and 16.4% (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05), respectively, after orthognathic surgery. The length of the masseter muscle increased by 13.9% on the deviated side (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.05) but decreased by 11.7% on the non-deviated side (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05). The width decreased on the deviated side from T1 to T2 (13.51\u2009\u00b1\u20092.09\u00a0mm vs. 12.04\u2009\u00b1\u20091.39\u00a0mm), but the non-deviated side showed an opposite tendency (10.81\u2009\u00b1\u20091.31\u00a0mm vs. 12.69\u2009\u00b1\u20092.37\u00a0mm). The difference in masseter muscle length and width between the two sides significantly reduced after surgery (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05). There was a noticeable decrease in the asymmetry in the muscle in proportion to the degree of the occlusal plane angle.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>Masseter muscle asymmetry exists in patients with facial asymmetry, but it could be improved with maxilla-mandible correction. Atrophy of the masseter muscle after orthognathic surgery was greater in patients with a large inclined occlusal plane angle due to improved dental compensation.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Level of Evidence IV<\/jats:title>\n                <jats:p>This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"http:\/\/www.springer.com\/00266\">www.springer.com\/00266<\/jats:ext-link>.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s00266-024-04309-2","type":"journal-article","created":{"date-parts":[[2024,8,26]],"date-time":"2024-08-26T17:02:16Z","timestamp":1724691736000},"page":"3751-3757","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Changes in 3-Dimensional Measurements of Masseter Muscle After Orthognathic Surgery in Patients with Facial Asymmetry"],"prefix":"10.1007","volume":"48","author":[{"given":"Xiaobin","family":"Yang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhengguo","family":"Piao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yaoran","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lunqiu","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luo","family":"Huang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2024,8,26]]},"reference":[{"key":"4309_CR1","first-page":"171","volume":"12","author":"TR Severt","year":"1997","unstructured":"Severt TR, Proffit WR (1997) The prevalence of facial asymmetry in the dentofacial deformities population at the university of North Carolina. 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