| Project/Area Number |
25463193
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Orthodontics/Pediatric dentistry
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| Research Institution | Kagoshima University |
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Principal Investigator |
Ishitani Norihito 鹿児島大学, 医歯(薬)学総合研究科, 客員研究員 (90343368)
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| Co-Investigator(Kenkyū-buntansha) |
INADA Emi 鹿児島大学, 医歯学域 医学部・歯学部附属病院, 助教 (30448568)
SAITOH Issei 新潟大学, 医歯学総合研究科, 准教授 (90404540)
KAIHARA Yasutaka 広島大学, 大学病院, 助教 (60274106)
YOSHIHARA Toshihiro 北海道大学, 歯学研究科(研究院), 准教授 (60261319)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 口唇閉鎖力 / アンケート / 顔面形態計測 / 口呼吸 |
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| Outline of Final Research Achievements |
We examined the relevant factors for mouth breathing in children and aimed to assess the hypothesis that weaker lip-closing strength is related to mouth breathing. Furthermore, we examined the hypothesis that mouth breathing has an adverse effect on the formation of facial soft tissue in children.
A questionnaire was administered, which comprised of four sections on the general conditions prevalent; condition of the nose, throat, and ears; condition of the mouth and occlusion; and meal consumption, which may be associated with mouth breathing. Images of the subjects’ facial surface were obtained with a three-dimensional laser scanner, and their lip-closing strength was recorded. Our study concluded that allergosis and lip-closing strength is correlated with mouth breathing. Further, mouth breathers have an anteriorly prominent subnasale and lips and a flatter nose, and the adverse influence of mouth breathing on the facial form is evident before the age of three years.
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