| Project/Area Number |
25670878
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Orthodontics/Pediatric dentistry
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| Research Institution | Kagoshima University |
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Principal Investigator |
TOMONORI Iwasaki 鹿児島大学, 医歯(薬)学総合研究科, 准教授 (10264433)
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| Co-Investigator(Kenkyū-buntansha) |
YAMASAKI Youichi 鹿児島大学, 医歯学総合研究科, 教授 (30200645)
KAJI Tatsuru 鹿児島大学, 医歯学総合研究科, 准教授 (50315420)
HARADA Mizue 鹿児島大学, 医歯学総合研究科, 助教 (20585103)
早崎 治明 新潟大学, 医歯学系, 教授 (60238095)
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| Co-Investigator(Renkei-kenkyūsha) |
KANOMI Ryuzou 鹿児島大学, 医歯学総合研究科, 研究員 (70411444)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | airway pressure / Class II / 漏斗胸 / 上気道 / 通気障害 |
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| Outline of Final Research Achievements |
Introduction: The pharyngeal airway inspiration pressure may influence maxillofacial form. This study tested the null hypothesis that pharyngeal airway respiration pressures in children with malocclusion due to different anterior-posterior skeletal patterns do not differ. Methods: Sixty-two average-FMA-angle children were divided into Class I, Class II, and Class III malocclusion groups. Cone-beam computed tomography data was used to reconstruct 3-dimensional shapes of the nasal and pharyngeal airways. Airflow pressure was simulated using computational fluid dynamics to calculate the pharyngeal airway pressure during inspiration. Results: The pharyngeal airway inspiration pressure in the Class II (-247.64 Pa) group was larger than that in the Class I (-43.51 Pa) and Class III (-31.81 Pa) groups. Conclusion: The large negative inspiratory pharyngeal airway pressure due to nasal obstruction in Class II children is related to their retrognathia.
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