TODENTJ-25-03-2019_TODENTJ-13-85 1553507731 Bentham Open doi@benthamopen.net Bentham Open The Open Dentistry Journal TODENTJ 1874-2106 02 28 2019 13 1 Narmin Helal Osama Basri Lubabah Samir Gadi Amira Fahad Alhameed John Marshal Grady Background: Rapid Maxillary Expansion (RME) aims to re-establish balance between the widths of the jaws. It is mainly utilized to treat skeletal and dental manifestations associated with transverse maxillary constriction and to improve facial structures involving the nasal cavity. Objectives: This study aimed to investigate parents’ perceptions of breathing pattern changes after their child had undergone RME and the associated effects on sleep quality and fatigue. We also evaluated nasal cavity changes in three dimensions in six randomly selected patients. Methods: Ninety-one children aged 5-13 years with transverse maxillary deficiency and no major systemic diseases or syndromes were recruited. Their parents completed a 16-item questionnaire pre-treatment and 6 months post-treatment. The questionnaire included items pertaining to changes in (1) sleep apnea and breathing patterns, (2) sleep quality and fatigue, and (3) behavior. The cone beam computed tomography scans from six randomly chosen patients were also subjected to stereolithographic reconstruction of the midface pre-RME and post-RME. Results: Responses in the three domains exhibited good reliability. Significant improvements were observed in 59% of the items post vs. pre-RME. The overall rates of dry mouth in the morning, snoring half of the time, and heavy breathing decreased by ≥30%. The percentage change in headache in the morning, snoring loudly, and snoring half of the time was >80%. In addition, in the series of six cases, the mean difference in nasal cavity area post-RME was 4.1 mm2. Conclusion: Post-RME, parents perceived that their children exhibited improved behavior and were less fatigued during the day. Enhanced sleep quality and breathing patterns were also observed, but to a lesser extent. 02 28 2019 85 92 TODENTJ-13-85 1 10.2174/crossmark_policy opendentistryjournal.com benthamopen.com true Peer Reviewed Single blind Checked with iThenticate 2018-09-27 2019-01-04 2019-01-28 2019-02-28 https://creativecommons.org/licenses/by/4.0/legalcode 10.2174/1874210601913010085 1553507731 https://opendentistryjournal.com/VOLUME/13/PAGE/85/ https://opendentistryjournal.com/contents/volumes/V13/TODENTJ-13-85/TODENTJ-13-85.pdf https://opendentistryjournal.com/contents/volumes/V13/TODENTJ-13-85/TODENTJ-13-85.pdf https://opendentistryjournal.com/contents/volumes/V13/TODENTJ-13-85/TODENTJ-13-85.pdf https://opendentistryjournal.com/contents/volumes/V13/TODENTJ-13-85/TODENTJ-13-85.pdf https://opendentistryjournal.com/contents/volumes/V13/TODENTJ-13-85/TODENTJ-13-85.pdf https://opendentistryjournal.com/contents/volumes/V13/TODENTJ-13-85/TODENTJ-13-85.pdf https://opendentistryjournal.com/contents/volumes/V13/TODENTJ-13-85/TODENTJ-13-85.pdf https://opendentistryjournal.com/contents/volumes/V13/TODENTJ-13-85/TODENTJ-13-85.xml Angell EH. 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