ArticleOral diseases2026
Socioeconomic Inequalities in Oral Frailty and Its Components.
Duc Sy Minh Ho, Yusuke Matsuyama, Sakura Kiuchi, Tatsuo Yamamoto, Jun Aida
Abstract read
In one paragraphArticle in Oral diseases, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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What it found
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2 · The registryThe trial behind it
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3 · Its place in the literatureWho cites it
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4 · The recordCorrections and comments
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5 · Who and what moneyAuthors and funding
5 authors.
Yusuke MatsuyamaDepartment of Dental Public Health, Graduate School of Medical and Dental Sciences, Institute of Science Tokyo, Tokyo, Japan.
Sakura KiuchiDepartment of Dental Public Health, Graduate School of Medical and Dental Sciences, Institute of Science Tokyo, Tokyo, Japan.
Tatsuo YamamotoDepartment of Preventive Dentistry and Dental Public Health, Kanagawa Dental University, Yokosuka, Japan.
Funding
FUTOKUKAI FoundationGrant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) 19H03860Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) 19H03861Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) 20H00557Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) 20K10540Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) 21H03196Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) 21K17302Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) 21K19635Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) 22H00934Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) 22H03299Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) 22K04450Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) 22K10285Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) 22K13558Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) 22K17409Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) 23H00449Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) 23K09500Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) 23K21500Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) 23K27807Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) 24K02658Health Labour Sciences Research Grants 19FA1012Health Labour Sciences Research Grants 19FA2001Health Labour Sciences Research Grants 21FA1012Health Labour Sciences Research Grants 22FA1010Health Labour Sciences Research Grants 22FA2001Health Labour Sciences Research Grants 22FG2001Health Labour Sciences Research Grants 23FA1022Health Labour Sciences Research Grants 25FA1013Japan Health Promotion and Fitness FoundationNational Research Institute for Earth Science and Disaster ResilienceResearch Institute of Science and Technology for Society from the Japan Science and Technology (JST) JPMJOP1831
6 · The paper itselfAbstract
objectivesOral frailty, an intermediate stage between healthy and declined oral function, involves impairments such as tooth loss and chewing difficulty. Socioeconomic conditions may influence oral frailty risk. This study examined the socioeconomic inequalities in oral frailty and its components among older adults in Japan.
methodsThis cross-sectional study used 2022 questionnaire data from the Japan Gerontological Evaluation Study of adults aged ≥ 65 years. Dependent variables included oral frailty and its five components. Oral frailty was defined as having ≥ 2 of the following: fewer teeth, dry mouth, and difficulty in chewing, swallowing, or speaking. Independent variables were socioeconomic factors, comprising educational attainment, income, wealth, and pension type. Age and sex were adjusted as confounders. The Slope Index of Inequality (SII) and Relative Index of Inequality (RII) were estimated after applying multiple imputation to address missing data.
resultsA total of 21,924 older adults were included. The prevalence of oral frailty was 33.6%. Significant inequalities were identified across all socioeconomic factors. Wealth showed the greatest inequality, with an adjusted SII of 0.17 (95% confidence interval (CI): 0.14-0.20) and RII of 1.66 (95% CI: 1.52-1.82).
conclusionsSubstantial socioeconomic inequalities in oral frailty were observed, with wealth being the most influential factor.
Indexed as
Frail ElderlyFrailtyAgedAged, 80 and overCross-Sectional StudiesFemaleHumansJapanMalePrevalenceSocioeconomic Disparities in HealthSocioeconomic FactorsXerostomiahealth inequalitiesoral frailtysocioeconomic factors
Identifiers
PMID41403051
PMCPMC13457687
What OpenQuestion holds
Textmetadata
LicenceCC BY
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