{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T12:24:13Z","timestamp":1782390253163,"version":"3.54.5"},"reference-count":26,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2023,5,11]],"date-time":"2023-05-11T00:00:00Z","timestamp":1683763200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"JSPS KAKENHI","award":["JP20K10080"],"award-info":[{"award-number":["JP20K10080"]}]},{"name":"Dental Research Center, Nihon University School of Dentistry","award":["JP20K10080"],"award-info":[{"award-number":["JP20K10080"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>Providing a normal diet to a care recipient who is unable to form an adequate bolus may cause suffocation or aspiration pneumonia. We investigated whether differences in kinematic data of mandibular movements during mastication can be used as an indicator of the need for a dysphagia diet in the elderly in long-term care facilities. We included 63 participants who were provided with solid food in two long-term care facilities. The primary outcome variable was the kinematic data on mandibular movement during cracker chewing. The analysis results were compared between the normal and dysphagia diet groups. Logistic regression analysis and receiver operating characteristic curve analyses were performed. Significant differences were observed in the masticatory time, cycle frequency, total change amount, number of linear motions, and circular motion frequency between the normal and modified diet groups. The odds ratio for the circular motion frequency was \u22120.307, and the calculated cutoff value was 63%, with a sensitivity of 71.4%, a specificity of 73.5%, and an area under the curve of 0.714. Thus, these characteristics may be useful for detecting care recipients who need to be provided with a dysphagia diet. Moreover, the circular motion frequency could be used as a screening test to identify people who need a dysphagia diet.<\/jats:p>","DOI":"10.3390\/nu15102273","type":"journal-article","created":{"date-parts":[[2023,5,11]],"date-time":"2023-05-11T05:05:02Z","timestamp":1683781502000},"page":"2273","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Kinematic Features of Mandibular Movement during Mastication in Geriatric Individuals Who Are Provided with a Dysphagia Diet at Long-Term Care Facilities"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6392-0547","authenticated-orcid":false,"given":"Enri","family":"Nakayama","sequence":"first","affiliation":[{"name":"The Department of Dysphagia Rehabilitation, Nihon University School of Dentistry, Tokyo 101-8310, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haruka","family":"Tohara","sequence":"additional","affiliation":[{"name":"Department of Dysphagia Rehabilitation, Division of Gerontology and Gerodontology, Tokyo Medical and Dental University, Tokyo 113-8549, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mayu","family":"Sakai","sequence":"additional","affiliation":[{"name":"The Department of Dysphagia Rehabilitation, Nihon University School of Dentistry, Tokyo 101-8310, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masato","family":"Iida","sequence":"additional","affiliation":[{"name":"The Department of Dysphagia Rehabilitation, Nihon University School of Dentistry, Tokyo 101-8310, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kimiko","family":"Abe","sequence":"additional","affiliation":[{"name":"The Department of Dysphagia Rehabilitation, Nihon University School of Dentistry, Tokyo 101-8310, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Koichiro","family":"Ueda","sequence":"additional","affiliation":[{"name":"The Department of Dysphagia Rehabilitation, Nihon University School of Dentistry, Tokyo 101-8310, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,5,11]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Cichero, J.A.Y. (2018). Age-related changes to eating and swallowing impact frailty: Aspiration, choking risk, modified food texture and autonomy of choice. Geriatrics, 3.","DOI":"10.3390\/geriatrics3040069"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"53","DOI":"10.1111\/joor.12861","article-title":"Food bolus-forming ability predicts incidence of aspiration pneumonia in nursing home older adults: A prospective observational study","volume":"47","author":"Hase","year":"2020","journal-title":"J. Oral. Rehabil."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"808","DOI":"10.1046\/j.1365-2842.2003.01124.x","article-title":"Relationship between cognitive function and mastication in elderly females","volume":"30","author":"Miura","year":"2003","journal-title":"J. Oral. Rehabil."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"1007","DOI":"10.1111\/ggi.12399","article-title":"Relationship between chewing ability and sarcopenia in Japanese community-dwelling older adults","volume":"15","author":"Murakami","year":"2015","journal-title":"Geriatr. Gerontol. Int."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"981","DOI":"10.2319\/011910-33.1","article-title":"The influence of malocclusion on masticatory performance. A systematic review","volume":"80","author":"Pereira","year":"2010","journal-title":"Angle Orthod."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"419","DOI":"10.1016\/j.jpor.2017.01.001","article-title":"Relationship between masticatory performance using a gummy jelly and masticatory movement","volume":"61","author":"Uesugi","year":"2017","journal-title":"J. Prosthodont. Res."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"9","DOI":"10.1016\/j.jpor.2016.04.004","article-title":"Assessment of masticatory performance by means of a color-changeable chewing gum","volume":"61","author":"Tarkowska","year":"2017","journal-title":"J. Prosthodont. Res."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"144","DOI":"10.1111\/1460-6984.12332","article-title":"The test of masticating and swallowing solids (TOMASS): Reliability, validity and international normative data","volume":"53","author":"Huckabee","year":"2018","journal-title":"Int. J. Lang. Commun. Disord."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"558","DOI":"10.1111\/1460-6984.12613","article-title":"The test of masticating and swallowing solids (TOMASS): Reliability and validity in patients with dysphagia","volume":"56","author":"Todaro","year":"2021","journal-title":"Int. J. Lang. Commun. Disord."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"106","DOI":"10.1016\/j.archger.2017.10.010","article-title":"A new evaluation of masticatory ability in patients with dysphagia: The Saku-Saku Test","volume":"74","author":"Tagashira","year":"2018","journal-title":"Arch. Gerontol. Geriatr."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"5095","DOI":"10.1038\/s41598-018-23486-0","article-title":"Non-invasive quantification of human swallowing using a simple motion tracking system","volume":"8","author":"Hashimoto","year":"2018","journal-title":"Sci. Rep."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1831","DOI":"10.1016\/S0140-6736(05)63658-6","article-title":"Insurance for long-term care planned in Japan","volume":"350","author":"Arai","year":"1997","journal-title":"Lancet"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"415","DOI":"10.1016\/S0261-5614(03)00098-0","article-title":"ESPEN guidelines for nutrition screening 2002","volume":"22","author":"Kondrup","year":"2003","journal-title":"Clin. Nutr."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"18","DOI":"10.1111\/ggi.13552","article-title":"Development of a novel convenient Alzheimer\u2019s disease assessment scale, the ABC Dementia Scale, using item response theory","volume":"19","author":"Mori","year":"2019","journal-title":"Geriatr. Gerontol. Int."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"85","DOI":"10.1159\/000486956","article-title":"ABC Dementia Scale: A Quick Assessment Tool for Determining Alzheimer\u2019s Disease Severity","volume":"8","author":"Mori","year":"2018","journal-title":"Dement. Geriatr. Cogn. Dis. Extra"},{"key":"ref_16","first-page":"1831","article-title":"\u00dcber eine Gruppeneinteilung der L\u00fcckengebisse f\u00fcr die Prothetik","volume":"10","author":"Eichner","year":"1955","journal-title":"Dtsch Zahnartzl Z"},{"key":"ref_17","first-page":"52","article-title":"Examination about the relation of meal form, tongue pressure, grip and walking state in inpatient and elderly residents","volume":"19","author":"Tanaka","year":"2015","journal-title":"Jpn. J. Dysphagia Rehabil."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"578","DOI":"10.1177\/154405910408300713","article-title":"Particle size distribution of food boluses after mastication of six natural foods","volume":"83","author":"Peyron","year":"2004","journal-title":"J. Dent. Res."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"90","DOI":"10.1111\/ger.12596","article-title":"Masticatory movements and food textures in older patients with eating difficulties","volume":"39","author":"Kato","year":"2022","journal-title":"Gerodontology"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"65","DOI":"10.2186\/jjps.49.65","article-title":"The relationship between masticatory path pattern and masticatory efficiency in gumi-jelly chewing","volume":"49","author":"Unno","year":"2005","journal-title":"Nihon Hotetsu Shika Gakkai Zasshi"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"1043","DOI":"10.1007\/s00134-003-1761-8","article-title":"A readers\u2019 guide to the interpretation of diagnostic test properties: Clinical example of sepsis","volume":"29","author":"Fischer","year":"2003","journal-title":"Intensive Care Med"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"577","DOI":"10.1111\/ggi.12137","article-title":"National survey of the prevalence of swallowing difficulty and tube feeding use as well as implementation of swallowing evaluation in long-term care settings in Japan","volume":"14","author":"Sugiyama","year":"2014","journal-title":"Geriatr. Gerontol. Int."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"209","DOI":"10.1016\/j.archger.2017.02.006","article-title":"Relationship between chewing ability and cognitive impairment in the rural elderly","volume":"70","author":"Kim","year":"2017","journal-title":"Arch. Gerontol. Geriatr."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1","DOI":"10.2220\/biomedres.28.1","article-title":"Influences of reduced masticatory sensory input from soft-diet feeding upon spatial memory\/learning ability in mice","volume":"28","author":"Tsutsui","year":"2007","journal-title":"Biomed. Res."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"187","DOI":"10.1007\/BF02493469","article-title":"Coordination of mastication and swallowing","volume":"7","author":"Palmer","year":"1992","journal-title":"Dysphagia"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"255","DOI":"10.1016\/S0006-8993(01)02410-6","article-title":"Effects of soft-diet feeding on synaptic density in the hippocampus and parietal cortex of senescence-accelerated mice","volume":"902","author":"Yamamoto","year":"2001","journal-title":"Brain Res."}],"container-title":["Nutrients"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-6643\/15\/10\/2273\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T19:32:52Z","timestamp":1760124772000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-6643\/15\/10\/2273"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,5,11]]},"references-count":26,"journal-issue":{"issue":"10","published-online":{"date-parts":[[2023,5]]}},"alternative-id":["nu15102273"],"URL":"https:\/\/doi.org\/10.3390\/nu15102273","relation":{},"ISSN":["2072-6643"],"issn-type":[{"value":"2072-6643","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,5,11]]}}}