| Project/Area Number |
26463174
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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 |
Social dentistry
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| Research Institution | Osaka Dental University |
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Principal Investigator |
FUKAI Kakuhiro 大阪歯科大学, 歯学部, 講師(非常勤) (60538768)
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| Co-Investigator(Kenkyū-buntansha) |
神原 正樹 大阪歯科大学, 歯学部, 名誉教授 (90103085)
瀧口 徹 新潟医療福祉大学, 医療経営管理学部, 教授 (80115047)
安藤 雄一 国立保健医療科学院, 統括研究官 (80168046)
青山 旬 神奈川歯科大学, 歯学部, 非常勤講師 (70192870)
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| Research Collaborator |
UENE Masako
KINOSHITA Naohiko
MIYAKAWA Yoko
UEHARA Mariko
KIMURA Taichi
KAWAMITSU Takako
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 生命予後 / 現在歯数 / 機能歯数 / 口腔保健 / 地域住民 / コホート調査 / 疫学研究 / コホート踏査 / 高齢者 / 歯の保存状況 |
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| Outline of Final Research Achievements |
The purpose of this study was to investigate the relationship between number of teeth and mortality in adults and elderly community residents. The participants consisted of 5,742 (2,256 male; 3,486 female) residents of the Miyako and Tarama islands, age 40 and over. This cohort was followed for 28 years, from 1987 to 2015. Overall mortality of participants with 9 or fewer and 10 or more functional teeth was analyzed by gender and age. A Cox regression analysis indicated that participants with fewer teeth had shorter lives, after adjusting for confounding factors. . This relationship becomes clear as early as 40, so maintaining a high number of functional teeth, even from middle age, is an essential requirement for longevity.
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