Tongue function is important for masticatory performance in the healthy elderly: a cross-sectional survey of community-dwelling elderly |
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| Authors: | Keiichiro Sagawa Hiroyasu Furuya Yuki Ohara Mitsuyoshi Yoshida Hirohiko Hirano Katsuya Iijima Takeshi Kikutani |
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| Affiliation: | 1. The Nippon Dental University, Graduate School of Life Dentistry, Division of Clinical Oral Rehabilitation, Tokyo, Japan;2. The Nippon Dental University, Tama Oral Rehabilitation Clinic, Division of Rehabilitation for Speech and Swallowing Disorders, Tokyo, Japan;3. Tokyo Medical and Dental University, Department of Oral Health Care Education, Graduate School of Medical and Dental Sciences, Tokyo, Japan;4. Hiroshima University Graduate School of Biomedical Sciences, Department of Advanced Prosthodontics, Hiroshima, Japan;5. Tokyo Metropolitan Institute of Gerontology, Research Team for Promoting Independence of the Elderly, Tokyo, Japan;6. The University of Tokyo, Institute of Gerontology (IOG), Tokyo, Japan |
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| Abstract: | PurposeThe aim of this study was to determine the influences of oral motor function such as tongue function and bite force on masticatory performance in the elderly.MethodsWe randomly selected 245 subjects who has 28 natural teeth among community-dwelling elderly. We evaluated masticatory performance using a gummy jelly, and also measured bite force, tongue muscle force, and the speed of tongue movement.ResultsWe found that reduced masticatory performance to be associated with decreased the speed of tongue movement and/or tongue muscle force, indicating that reduced oral motor function also influences masticatory performance.ConclusionsThese results suggest that keeping oral motor function, as well as maintenance of occlusal support, to be important for maintaining masticatory function in the elderly. |
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| Keywords: | Elderly Oral function Masticatory function Tongue muscle force Speed of tongue movement Bite force |
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