{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T23:53:09Z","timestamp":1790639589499,"version":"4.1.0"},"reference-count":60,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2025,2,10]],"date-time":"2025-02-10T00:00:00Z","timestamp":1739145600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Japan Ministry of Health, Labor, and Welfare","award":["20H03873"],"award-info":[{"award-number":["20H03873"]}]},{"name":"Japan Ministry of Health, Labor, and Welfare","award":["20H03899"],"award-info":[{"award-number":["20H03899"]}]},{"name":"JSPS KAKENHI","award":["20H03873"],"award-info":[{"award-number":["20H03873"]}]},{"name":"JSPS KAKENHI","award":["20H03899"],"award-info":[{"award-number":["20H03899"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>Background\/Objectives: Undernutrition increases the mortality risk in older persons requiring long-term care; further, it is associated with oral functions such as swallowing and chewing. Moreover, occlusion affects oral function and is crucially involved in nutritional intake. The present study aimed to examine the association between the number of molar occlusions and undernutrition according to body mass index (BMI) in older persons requiring long-term care. Methods: Japanese older persons requiring long-term care were categorized based on BMI (&lt;20 kg\/m2 vs. 20 kg\/m2). We examined the association between undernutrition and the number of molar occlusions (one in each of the left and right premolars and molars, for a total of four). Results: Among 893 included participants, 440 (49.3%) had BMI &lt; 20 kg\/m2 and 453 (50.7%) had BMI &gt; 20 kg\/m2. Binomial logistic regression analysis revealed that BMI &lt; 20 kg\/m2 was significantly associated with increased number of molar occlusions (odds ratio: 0.52\u20130.70, 95% CI: 0.28\u20131.00). This indicated that a decrease in the number of molar occlusions was associated with malnutrition as determined through BMI in older persons requiring long-term care and residing in long-term care insurance facilities in Japan. Conclusions: Our findings suggest that maintaining occlusal support may help maintain nutritional status in older persons requiring long-term care.<\/jats:p>","DOI":"10.3390\/nu17040630","type":"journal-article","created":{"date-parts":[[2025,2,12]],"date-time":"2025-02-12T08:05:42Z","timestamp":1739347542000},"page":"630","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Association Between Undernutrition and the Number of Molar Occlusions in Older Persons Requiring Care in Long-Term Care Insurance Facilities"],"prefix":"10.3390","volume":"17","author":[{"given":"Koji","family":"Takahashi","sequence":"first","affiliation":[{"name":"Gerodontology, Department of Oral Health Science, Faculty of Dental Medicine, Hokkaido University, Sapporo 060-8586, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4983-2399","authenticated-orcid":false,"given":"Yutaka","family":"Watanabe","sequence":"additional","affiliation":[{"name":"Gerodontology, Department of Oral Health Science, Faculty of Dental Medicine, Hokkaido University, Sapporo 060-8586, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takuma","family":"Okumura","sequence":"additional","affiliation":[{"name":"Gerodontology, Department of Oral Health Science, Faculty of Dental Medicine, Hokkaido University, Sapporo 060-8586, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yasushi","family":"Tamada","sequence":"additional","affiliation":[{"name":"Gerodontology, Department of Oral Health Science, Faculty of Dental Medicine, Hokkaido University, Sapporo 060-8586, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Misuzu","family":"Sato","sequence":"additional","affiliation":[{"name":"Department of Preventive Dentistry, Faculty of Dental Medicine and Graduate School of Dental Medicine, Hokkaido University, Sapporo 060-8586, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5739-2936","authenticated-orcid":false,"given":"Masanori","family":"Iwasaki","sequence":"additional","affiliation":[{"name":"Department of Preventive Dentistry, Faculty of Dental Medicine and Graduate School of Dental Medicine, Hokkaido University, Sapporo 060-8586, Japan"},{"name":"Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo 173-0015, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2478-8202","authenticated-orcid":false,"given":"Maki","family":"Shirobe","sequence":"additional","affiliation":[{"name":"Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo 173-0015, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hirohiko","family":"Hirano","sequence":"additional","affiliation":[{"name":"Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo 173-0015, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2858-1260","authenticated-orcid":false,"given":"Yoshihiro","family":"Kugimiya","sequence":"additional","affiliation":[{"name":"Department of Dentistry and Oral Surgery, National Center for Geriatrics and Gerontology, Obu 474-8511, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masako","family":"Kishima","sequence":"additional","affiliation":[{"name":"Department of Dentistry, Wakakusa-Tatsuma Rehabilitation Hospital, Daito 574-0012, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7511-3945","authenticated-orcid":false,"given":"Kayoko","family":"Ito","sequence":"additional","affiliation":[{"name":"Oral Rehabilitation, Niigata University Medical and Dental Hospital, Niigata 951-8520, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yasuyuki","family":"Iwasa","sequence":"additional","affiliation":[{"name":"Department of Dentistry, Haradoi Hospital, Fukuoka 813-8588, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8050-5943","authenticated-orcid":false,"given":"Yoshihiko","family":"Watanabe","sequence":"additional","affiliation":[{"name":"Department of Healthcare Management, Tohoku Fukushi University, Sendai 981-8522, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1512-1270","authenticated-orcid":false,"given":"Shinsuke","family":"Mizutani","sequence":"additional","affiliation":[{"name":"Section of Geriatric Dentistry and Perioperative Medicine in Dentistry, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Fukuoka 812-8582, Japan"},{"name":"OBT Research Center, Faculty of Dental Science, Kyushu University, Fukuoka 812-8582, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5572-4159","authenticated-orcid":false,"given":"Kazuharu","family":"Nakagawa","sequence":"additional","affiliation":[{"name":"Department of Dysphagia Rehabilitation, Division of Gerontology and Gerodontology, Graduate School of Medical and Dental Sciences, Institute of Science Tokyo, Tokyo 113-8510, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shigekazu","family":"Komoto","sequence":"additional","affiliation":[{"name":"Department of Health Care Policy, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Hokkaido 060-8638, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yutaka","family":"Yamazaki","sequence":"additional","affiliation":[{"name":"Gerodontology, Department of Oral Health Science, Faculty of Dental Medicine, Hokkaido University, Sapporo 060-8586, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,2,10]]},"reference":[{"key":"ref_1","unstructured":"Ministry of Internal Affairs and Communications (2024). 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