{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T23:34:13Z","timestamp":1781566453769,"version":"3.54.5"},"reference-count":18,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2026,1,19]],"date-time":"2026-01-19T00:00:00Z","timestamp":1768780800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"},{"start":{"date-parts":[[2026,1,19]],"date-time":"2026-01-19T00:00:00Z","timestamp":1768780800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Oral Rehabilitation"],"published-print":{"date-parts":[[2026,5]]},"abstract":"ABSTRACT<\/jats:title>\n \n Background<\/jats:title>\n Oral hypofunction (OHF) is a multidimensional condition representing a subclinical decline in oral function. Cross\u2010national comparisons using standardised criteria remain limited.<\/jats:p>\n <\/jats:sec>\n \n Objectives<\/jats:title>\n This study aimed to compare the prevalence and characteristics of OHF among community\u2010dwelling adults in Japan and Switzerland and to examine age\u2010related patterns using standardised assessments.<\/jats:p>\n <\/jats:sec>\n \n Methods<\/jats:title>\n A cross\u2010sectional study was conducted in community settings in Japan (153 participants) and in a university dental clinic in Switzerland (117 participants). OHF assessments were performed between May 2023 and January 2024 in Japan and between December 2023 and January 2024 in Switzerland. Data were collected by trained and calibrated examiners from both countries following standardised protocols. OHF was diagnosed when three or more of the seven oral function domains, including oral hygiene, oral dryness, occlusal force, tongue\u2010lip motor function, tongue pressure, masticatory function, and swallowing function, were impaired. Multiple logistic regression analyses were performed with OHF as the outcome after adjusting for country, age, and covariates. Interactions between country and age were also investigated.<\/jats:p>\n <\/jats:sec>\n \n Results<\/jats:title>\n \n The prevalence of OHF was 30.7% in Japanese participants and 49.6% in Swiss participants (\n p<\/jats:italic>\n \u2009=\u20090.002). The Swiss participants demonstrated significantly better oral hygiene (\n p<\/jats:italic>\n \u2009<\u20090.001), while the Japanese participants showed better tongue pressure (\n p<\/jats:italic>\n \u2009=\u20090.026), lip\u2010tongue motor function (\n p<\/jats:italic>\n \u2009<\u20090.001), maximum occlusal force (\n p<\/jats:italic>\n \u2009=\u20090.002), and masticatory function (\n p<\/jats:italic>\n \u2009<\u20090.001). In logistic regression, OHF was associated with Swiss nationality (odds ratio [OR]: 3.85, 95% confidence interval [CI]: 1.85\u20138.00,\n p<\/jats:italic>\n \u2009<\u20090.001), age \u2265\u200970\u2009years (OR: 5.73, 95% CI: 1.67\u201319.68,\n p<\/jats:italic>\n \u2009=\u20090.006, compared to those in their 20s), lower hand grip strength (OR: 0.91, 95% CI: 0.87\u20130.96,\n p<\/jats:italic>\n \u2009=\u20090.001), and fewer teeth (OR: 0.94, 95% CI: 0.89\u20130.98,\n p<\/jats:italic>\n \u2009=\u20090.008). A significant interaction between country and age indicated differing age\u2010related OHF progression between the Japanese and Swiss populations.\n <\/jats:p>\n <\/jats:sec>\n \n Conclusion<\/jats:title>\n Both populations exhibited age\u2010related declines in oral function; however, functional impairment was more prevalent and progressive in Switzerland. These findings support the cross\u2010cultural applicability of the OHF criteria and underscore the need for population\u2010specific preventive strategies.<\/jats:p>\n <\/jats:sec>","DOI":"10.1111\/joor.70144","type":"journal-article","created":{"date-parts":[[2026,1,19]],"date-time":"2026-01-19T12:45:39Z","timestamp":1768826739000},"page":"960-971","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Comparative Analysis of Oral Hypofunction in Community\u2010Dwelling Adults in Japan and Clinic\u2010Recruited Community\u2010Dwelling Adults in Switzerland: A Cross\u2010Sectional Study"],"prefix":"10.1111","volume":"53","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1398-0450","authenticated-orcid":false,"given":"Risako","family":"Mikami","sequence":"first","affiliation":[{"name":"Department of Advanced Biomaterials Graduate School of Medical and Dental Sciences, Institute of Science Tokyo Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matsuo","family":"Koichiro","sequence":"additional","affiliation":[{"name":"Department of Oral Health Sciences for Community Welfare Graduate School of Medical and Dental Sciences, Institute of Science Tokyo Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lisa","family":"Takeshita","sequence":"additional","affiliation":[{"name":"Clinic of General, Special Care and Geriatric Dentistry, Center for Dental Medicine University of Z\u00fcrich Zurich Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Misaki","family":"Tanaka","sequence":"additional","affiliation":[{"name":"Department of Oral Health Sciences for Community Welfare Graduate School of Medical and Dental Sciences, Institute of Science Tokyo Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6812-4849","authenticated-orcid":false,"given":"Claudio Rodrigues","family":"Leles","sequence":"additional","affiliation":[{"name":"Clinic of General, Special Care and Geriatric Dentistry, Center for Dental Medicine University of Z\u00fcrich Zurich Switzerland"},{"name":"Federal University of Goi\u00e0s Goiania Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6170-5053","authenticated-orcid":false,"given":"Dusit","family":"Nantanapiboon","sequence":"additional","affiliation":[{"name":"Clinic of General, Special Care and Geriatric Dentistry, Center for Dental Medicine University of Z\u00fcrich Zurich Switzerland"},{"name":"Dental Material Research and Development Center, Department of Operative Dentistry, Faculty of Dentistry Chulalongkorn University Bangkok Thailand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rena","family":"Hidaka","sequence":"additional","affiliation":[{"name":"Department of Oral Health Sciences for Community Welfare Graduate School of Medical and Dental Sciences, Institute of Science Tokyo Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Manabu","family":"Kanazawa","sequence":"additional","affiliation":[{"name":"Department of Gerodontology Graduate School of Medical and Dental Sciences, Institute of Science Tokyo Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3365-576X","authenticated-orcid":false,"given":"Murali","family":"Srinivasan","sequence":"additional","affiliation":[{"name":"Clinic of General, Special Care and Geriatric Dentistry, Center for Dental Medicine University of Z\u00fcrich Zurich Switzerland"},{"name":"Center of Excellence in Precision Medicine and Digital Health, International Program in Geriatric Dentistry and Special Patients Care, Faculty of Dentistry Chulalongkorn University Bangkok Thailand"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,1,19]]},"reference":[{"key":"e_1_2_13_2_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12903-016-0209-9"},{"key":"e_1_2_13_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/ggi.14846"},{"key":"e_1_2_13_4_1","doi-asserted-by":"publisher","DOI":"10.1093\/gerona\/glx225"},{"key":"e_1_2_13_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/jgs.14355"},{"key":"e_1_2_13_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/ger.12347"},{"key":"e_1_2_13_7_1","doi-asserted-by":"publisher","DOI":"10.1155\/ijod\/8852345"},{"issue":"4","key":"e_1_2_13_8_1","first-page":"209","article-title":"Cross\u2010Cultural Differences in Oral Impacts on Daily Performance Between Greek and British Older Adults","volume":"18","author":"Tsakos G.","year":"2001","journal-title":"Community Dental 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Prosthodontics"},{"key":"e_1_2_13_16_1","doi-asserted-by":"publisher","DOI":"10.1111\/joor.12319"},{"key":"e_1_2_13_17_1","doi-asserted-by":"publisher","DOI":"10.3390\/ijerph17041376"},{"key":"e_1_2_13_18_1","doi-asserted-by":"publisher","DOI":"10.1111\/ger.70003"},{"key":"e_1_2_13_19_1","doi-asserted-by":"publisher","DOI":"10.1111\/ger.12602"}],"container-title":["Journal of Oral Rehabilitation"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/joor.70144","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/joor.70144","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/joor.70144","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,7]],"date-time":"2026-04-07T04:12:54Z","timestamp":1775535174000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/joor.70144"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,1,19]]},"references-count":18,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2026,5]]}},"alternative-id":["10.1111\/joor.70144"],"URL":"https:\/\/doi.org\/10.1111\/joor.70144","archive":["Portico"],"relation":{"has-review":[{"id-type":"doi","id":"10.1111\/JOOR.70144\/v1\/decision1","asserted-by":"object"},{"id-type":"doi","id":"10.1111\/JOOR.70144\/v1\/review1","asserted-by":"object"}]},"ISSN":["0305-182X","1365-2842"],"issn-type":[{"value":"0305-182X","type":"print"},{"value":"1365-2842","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,1,19]]},"assertion":[{"value":"2025-08-07","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication 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