| Project/Area Number |
24390472
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Social dentistry
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| Research Institution | Kyushu Dental College |
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Principal Investigator |
TAKATA Yutaka 九州歯科大学, 歯学部, 教授 (40163208)
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| Co-Investigator(Kenkyū-buntansha) |
ANSAI Toshihiro 九州歯科大学, 歯学部, 教授 (80244789)
SOH Inho 九州歯科大学, 歯学部, 助教 (10285463)
AWANO Shuji 九州歯科大学, 歯学部, 講師 (20301442)
NAKAMICHI Ikuo 九州歯科大学, 歯学部, 助教 (60419570)
YOSHIDA Akihiro 九州歯科大学, 歯学部, 助教 (20364151)
SONOKI Kazuo 九州歯科大学, 歯学部, 准教授 (50316155)
GOTO Kenichi 九州歯科大学, 歯学部, 助教 (30549887)
FUJII Hiroki 九州歯科大学, 歯学部, 助教 (50623063)
AKIFUSA Sumio 九州歯科大学, 歯学部, 教授 (40295861)
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
Fiscal Year 2015: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2014: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2013: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 予防歯学 / 死亡率 / 高齢者 / 予防歯科学 |
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| Outline of Final Research Achievements |
We performed prospective cohort studies of 17-year follow-up in an 80-year-old resident and of 12-year follow in an 85-year-olds, in which an association between life span and tooth number or chewing was examined. Of 824 80-year-olds, 88 were alive, 662 were dead. Of 662 deaths, cardiovascular deaths were 167, respiratory 134, and cancer 99 (15.0%). In 80-year-olds, a difference in survival rates was found between best chewing ability group and worst chewing for all subjects. Similarly, in men, survival rates were higher in best chewing group than in worst, in best chewing than in slightly worse, and in slightly better group than in worst, while no associations were found between chewing group and survival rate in women. Number of teeth was not related to survival rates in all subjects, men, or women. In 85-year-olds, no significant association were found between survival rate and chewing or number of teeth in all subjects, men, or women.
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