| Project/Area Number |
11557152
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
補綴理工系歯学
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| Research Institution | KYUSHU UNIVERSITY |
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Principal Investigator |
OKIMOTO Kimie Faculty of Dentistry, Kyushu University, Assoc. Prof., 歯学研究院, 助教授 (00037532)
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| Co-Investigator(Kenkyū-buntansha) |
OOUTIDA Riichi Faculty of Dentistry, Kyushu University, Assis. Prof., 歯学研究院, 助手 (20325468)
MATSUO Kouichi Faculty of Dentistry, Kyushu University, Assis. Prof., 歯学研究院, 助手 (30229421)
TERADA Yoshihiro Faculty of Dentistry, Kyushu University, Prof., 歯学研究院, 教授 (30038898)
村井 久仁子 九州大学, 歯学部, 助手 (70243954)
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| Project Period (FY) |
1999 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥6,700,000 (Direct Cost: ¥6,700,000)
Fiscal Year 2001: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2000: ¥3,700,000 (Direct Cost: ¥3,700,000)
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| Keywords | elderly / masticatory ability / artificially-made texture / energy expression / absorption / 義歯 / 分光光度計 / テキスチャー / ATP顆粒 |
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| Research Abstract |
A variety of studies have been reported so far in an attempt to assess masticatory function. However, there have been a very few reports objective measurement and assessment of masticatory ability for the aged who wear the denture. In 1989, Nakashima studied the masticatory ability with the artificially-prepared texture for healthy adult subjects, defined as the joules of work performed. We call this texture as [basic capsule].
Based on the basic capsule, we developed newly soft artificially-made texture for the elderly enabling in measuring even the low level of mastication. We call this method and texture as [energy expression method] and [aged capsule].
The test materials consist of rubber capsule measuring 10 mm in diameter and 20 mm in length and of pigment 106 coated granules.
Expression with energy : The absorption of pigment leaking from pigment granules degraded during mastication was measured. The chewing ability was obtained by energy conversion formula showing a relationship between the absorption level obtained by the basic experiment and energy.
The energy conversion formula as follows ;
basic capsule Y=0.1206X, aged capsule Y=0.0655X
X : absorption, Y : energy (Joule)
Based on the obtained data, there was correlation between the joule-expression method and traditional methodsthe, sieve system and the food intake questionnaire by SPSS.
Furthermore we concluded the masticatory frequency of 20 was the optimum, and repetition of 3 times was appropriate by additional reserch.
Moreover, the joule-expression method provides 100 % recovery of the test material and simplicity and accuracy because the granules are contained in the capsule. Therefore, these suggest that the joule-expression method and aged capsule should be useful and effective in evaluating the masticatory function for the elderly.
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