| Project/Area Number |
26560228
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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 |
Biomedical engineering/Biomaterial science and engineering
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| Research Institution | Ritsumeikan University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
TANAKA Masahiro 大阪歯科大学, 歯学部, 教授 (60163573)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 嚥下 / 噛みしめ / 摂食・嚥下障害 / 曲率センサ / 咬筋 / 喉頭蓋 / 食道 / 歯列 / 柔軟ポリマー曲率センサ / 生物・生体工学 |
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| Outline of Final Research Achievements |
In this study, we have developed a portable monitor for measuring the movement of the lower jaw masseter uplift and the laryngeal prominence using a curvature sensor. In the experiments, healthy individuals were asked to swallow solid food mass of varying hardness. As a result, the period between the start swallowing and the trachea closure / the lower jaw fix was proved to confirm an inverse trend in time and chewing number of times. Hence, it was suggested that the aspiration will occur due to the disturbed series of swallowing process by aftereffect of cerebral vascular disease or functional decline of muscle strength and the nervous system associated with aging. Moreover, all healthy subjects could not swallow the bolus without clenching. Therefore, ingestion of food solid mass in comparison with the case of ingesting the liquid became clear that the lower jaw fixed is more important.
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