{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T21:08:03Z","timestamp":1790197683371,"version":"4.1.0"},"reference-count":31,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2021,12,1]],"date-time":"2021-12-01T00:00:00Z","timestamp":1638316800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2021,12,23]],"date-time":"2021-12-23T00:00:00Z","timestamp":1640217600000},"content-version":"vor","delay-in-days":22,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"University of Damascus Postgraduate Research Budget","award":["7301144710DEN"],"award-info":[{"award-number":["7301144710DEN"]}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Prog Orthod."],"published-print":{"date-parts":[[2021,12]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Aims<\/jats:title>\n                    <jats:p>This study aimed to evaluate the short-term oropharyngeal airway volumetric changes in growing Class III maxillary-deficient patients treated by facemask without expansion compared with untreated Class III controls, using low-dose computed tomography.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Eighteen maxillary-deficient children (9 boys, nine girls) with a mean age of 7.81\u2009\u00b1\u20090.84\u00a0years were treated with maxillary bonded bite block and facemask (FM). Pre- (T1) and post-treatment (T2) low-dose CT images were acquired. Sixteen untreated Class III patients with a mean age of 7.03\u2009\u00b1\u20090.56\u00a0years had previously two low-dose CT scans within a one year of follow-up. Volumetric and minimal cross-sectional area measurements were obtained to assess the oropharyngeal airway changes. Quantitative mean, minimum, and maximum displacement of superimposed 3D models were estimated from a point-based analysis. Paired-samples t-tests were used for the intragroup comparisons, and an independent samples t-test and the Mann\u2013Whitney U tests were carried out for the intergroup comparisons.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      A statistically significant increase in the total and retropalatal volumes oropharyngeal airway volume were observed in the control group (302.23\u2009\u00b1\u2009345.58 and 145.73\u2009\u00b1\u2009189.22 mm\n                      <jats:sup>3<\/jats:sup>\n                      , respectively). In the FM group, statistically significant increases in the total and retropalatal volumes were observed (738.86\u2009\u00b1\u20091109.37 mm\n                      <jats:sup>3<\/jats:sup>\n                      and 388.63\u2009\u00b1\u2009491.44 mm\n                      <jats:sup>3<\/jats:sup>\n                      , respectively). However, no statistically significant differences were found between the two groups, except for the maximum part analysis which was significantly greater in the FM group (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.007).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>FM therapy appeared to have no additional effects on the oropharyngeal airway other than those induced by growth.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s40510-021-00391-3","type":"journal-article","created":{"date-parts":[[2021,12,22]],"date-time":"2021-12-22T19:15:13Z","timestamp":1640200513000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["Three-dimensional oropharyngeal airway changes after facemask therapy using low-dose computed tomography: a clinical trial with a retrospectively collected control group"],"prefix":"10.1186","volume":"22","author":[{"given":"Amr H.","family":"Husson","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ahmad S.","family":"Burhan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0640-1297","authenticated-orcid":false,"given":"Mohammad Y.","family":"Hajeer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fehmieh R.","family":"Nawaya","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,12,23]]},"reference":[{"issue":"3","key":"391_CR1","doi-asserted-by":"publisher","first-page":"346","DOI":"10.1093\/ejo\/cjp092","volume":"32","author":"T Baccetti","year":"2010","unstructured":"Baccetti T, Franchi L, Mucedero M, Cozza P. 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