The University of Osaka · Dentistry
Professor Kodai Hatta's research lab focuses on the interplay between oral health and age-related physical and cognitive decline in older adults. The lab investigates how oral functions—such as occlusal force, masticatory performance, tongue pressure, and swallowing—impact physical frailty, mobility, and cognitive function in the elderly. Longitudinal studies are central to their work, aiming to identify early oral health indicators of sarcopenia, frailty, and dementia. The lab emphasizes the role of posterior occlusal support and oral function decline as potential predictors of functional and cognitive deterioration in aging populations.
Figures are computed from collected data and may differ slightly.
Relationships may exist between aspects of oral health and sarcopenia or its diagnostic factors. However, reports showing associations between oral health and sarcopenia are scarce, and definitive conclusions could not be drawn. Further longitudinal studies are necessary to confirm these relationships.
The present findings suggest that a lack of posterior occlusal support predicted the incidence of cognitive decline, even after adjusting for possible risk factors in community-dwelling old-old people. Geriatr Gerontol Int 2018; 18: 1439-1446.
Number of teeth and occlusal force predict cognitive decline over 3 subsequent years in Japanese older adults aged 70 and 80 years.
Grip strength and walking speed are considered to be important indicators of physical frailty. However, no study has contemporaneously examined any association of multiple oral functions with grip strength and walking speed. The purpose of this study was to examine which oral functions are associated with muscle strength (grip strength), physical performance (walking speed) or both. The study participants were 511 community-dwelling people (254 men and 257 women) aged 77-81 years old. Six oral f
Lack of posterior occlusal support at baseline independently predicted the incidence of reduced walking speed over 3 years.
Within the limitations of this retrospective cohort study, it was found that implants in free-end edentulous spaces may be beneficial in extending the longevity of adjacent teeth. Further research will be necessary to confirm this finding.
These findings suggest that tongue pressure significantly decreased over time, but occlusal force did not. Tongue-related muscles may be more susceptible to aging than masticatory muscles.
症例の概要：患者は，初診時81歳の女性で，下顎全部床義歯の動揺および咀嚼困難を主訴に来院した．患者の現義歯の状態と，触診や視診による唇頰側粘膜，舌の可動域等を精査し，下顎全部床義歯の床縁位置不良による維持・安定不良を原因とする咀嚼障害と診断した．閉口機能印象を行い，上下顎全部床義歯を製作した．
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