{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T21:30:04Z","timestamp":1777411804418,"version":"3.51.4"},"reference-count":24,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2024,4,11]],"date-time":"2024-04-11T00:00:00Z","timestamp":1712793600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Neuropsychopharm Rep"],"published-print":{"date-parts":[[2024,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Aim<\/jats:title><jats:p>Oral function in patients with schizophrenia has not been well\u2010characterized. To address this, we performed a cross\u2010sectional study of oral function in Japanese inpatients with schizophrenia.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We measured oral function, including occlusal force, tongue\u2013lip motor function, tongue pressure, and masticatory function in 130 Japanese inpatients with schizophrenia. We then compared the frequency of clinical signs of oral hypofunction among 63 non\u2010elderly and 67 elderly inpatients with schizophrenia, as well as data from 98 elderly control participants from a previous Japanese study.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The frequency of reduced occlusal force was significantly higher in the elderly inpatients (76.2%) than in the non\u2010elderly inpatients (43.9%) and elderly controls (43.9%). The frequency of decreased tongue\u2013lip motor function in non\u2010elderly inpatients (96.8%) and elderly inpatients (97.0%) was significantly higher than that in elderly controls (56.1%). The frequency of decreased tongue pressure in non\u2010elderly inpatients (66.1%) and elderly inpatients (80.7%) was significantly higher than that in elderly controls (43.9%). Finally, the frequency of decreased masticatory function was highest in elderly inpatients (76.5%), followed by non\u2010elderly inpatients (54.8%) and elderly controls (15.3%).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Oral function was decreased in both non\u2010elderly and elderly Japanese inpatients with schizophrenia compared with elderly controls.<\/jats:p><\/jats:sec>","DOI":"10.1002\/npr2.12443","type":"journal-article","created":{"date-parts":[[2024,4,11]],"date-time":"2024-04-11T08:24:47Z","timestamp":1712823887000},"page":"356-360","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Decreased oral function in Japanese inpatients with schizophrenia"],"prefix":"10.1002","volume":"44","author":[{"given":"Yuichiro","family":"Watanabe","sequence":"first","affiliation":[{"name":"Department of Psychiatry Niigata University Graduate School of Medical and Dental Sciences  Niigata 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