| Project/Area Number |
13672037
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
補綴理工系歯学
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| Research Institution | HIROSHIMA UNIVERSITY |
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Principal Investigator |
TAJI Tsuyoshi University Dental Hospital, Research Associate, 歯学部附属病院, 助手 (80284214)
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| Co-Investigator(Kenkyū-buntansha) |
YOSHIDA Mitsuyoshi Graduate school of Biomedical Sciences, Research Associate, 大学院・医歯薬学総合研究科, 助手 (50284211)
TSUGA Kazuhiro Graduate school of Biomedical Sciences, Associate Professor, 大学院・医歯薬学総合研究科, 助教授 (60217289)
AKAGAWA Yasumasa Graduate school of Biomedical Sciences, Professor, 大学院・医歯薬学総合研究科, 教授 (00127599)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2002: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2001: ¥2,200,000 (Direct Cost: ¥2,200,000)
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| Keywords | The elderly / Swallowing / Occlusion / Complete Denture |
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| Research Abstract |
Purpose : Purpose of this study was to examine swallowing in the elderly over 80y with 20 teeth to clarify the influence of aging.
Materials and Methods : Subjects were the dentulous elderly (12m, 7 f ; mean age 81.2y) and young colleagues (9 m, 5 f ; mean age 26.8y). The subjects complained of no symptoms related to dysphagia, neurologic impairments and degenerative diseases. They participated with informed consent. For videofiuorography (VF) examination, subjects were seated as usual and lateral images of the entire mouth, pharynx and larynx were obtained. Subjects were asked to swallow 10-mL barium sulphate solution (10 w/v %) on 3 times. Movement was recorded on X ray cinema film and digital video tape using a DSA system. Qualitative and quantitative estimations were performed.
Results : Oral transit time, pharyngeal transit time and pharyngeal delay time for the elderly were prolonged compared with those of young colleagues. Piecemeal deglutition, premature loss of liquid, oral and pharyngeal residue and laryngeal penetration significantly increased in frequency in the elderly.
Conclusion : The results of this study suggest that physiological functions are weaker in the normal dentulous elderly.
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