{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,13]],"date-time":"2026-04-13T12:17:08Z","timestamp":1776082628325,"version":"3.50.1"},"reference-count":44,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2022,8,5]],"date-time":"2022-08-05T00:00:00Z","timestamp":1659657600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["JP17K17389"],"award-info":[{"award-number":["JP17K17389"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J intellect Disabil Res"],"published-print":{"date-parts":[[2022,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>We investigated the number of teeth in middle\u2010aged and older individuals with intellectual disability and evaluated the related factors.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A questionnaire survey on oral health was administered to 604 persons over 40\u00a0years old with intellectual disabilities in Aichi Prefecture, Japan. The questionnaire designed for this study included items on diagnosis of disability, severity of intellectual disability and type of residence. As oral\u2010health\u2010related factors, the proxy\u2010reported number of teeth, family dentist, regular dental check\u2010ups, problems during dental treatment and tooth\u2010brushing frequency were evaluated. A multinomial logistic regression analysis was performed using the proxy\u2010reported number of teeth (\u226520, 10\u201319 or 0\u20139) as the dependent variable, and the odds ratios (ORs) and 95% confidence intervals (CIs) of independent variables were calculated. In addition, linear regression analysis was performed using the proxy\u2010reported number of teeth as the dependent variable.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>In the multivariate multinomial logistic regression analysis, age, diagnosis of disability and type of residence were significantly associated with having 10\u201319 versus \u226520 teeth. Participants with autism spectrum disorder had a significantly lower OR for 10\u201319 teeth compared with those with intellectual disability [OR (95% CI): 0.49 (0.22\u20131.08)]. Age, diagnosis of disability, regular dental check\u2010ups and tooth\u2010brushing frequency were significantly associated with having 0\u20139 versus \u226520teeth. Participants with Down syndrome had a significantly higher OR for 0\u20139 teeth compared with those with intellectual disability [OR (95% CI): 3.17 (1.09\u20139.23)]. The ORs for 0\u20139 teeth of participants who did not attend regular dental check\u2010ups and who brushed their teeth 1 time\/day compared with \u22653 times\/day were significantly high, and the OR (95% CI) was 2.37 (1.06\u20135.30) and 4.76 (1.09\u201320.77), respectively. [Corrections made on 22 August 2022, after first online publication: in the previous sentence, \u201cwho attend\u201d has been changed to \u201cwho did not attend\u201d.] In the multivariate linear regression analysis, age, diagnosis of disability and regular dental check\u2010ups were significantly associated with the proxy\u2010reported number of teeth. The proxy\u2010reported number of teeth was \u22120.42 less with each 1\u2010year increase in age. With autism spectrum disorder, the proxy\u2010reported number of teeth was 0.74 more compared with intellectual disability. In Down syndrome, the proxy\u2010reported number of teeth was \u22120.93 less compared with intellectual disability. The proxy\u2010reported number of teeth was \u22122.12 less for those who did not have regular dental check\u2010ups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The number of teeth in middle\u2010aged and older individuals with intellectual disability was related to age and the type of disability. Regular dental visits may be effective at preventing tooth loss in middle\u2010aged and older persons with intellectual disability.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jir.12967","type":"journal-article","created":{"date-parts":[[2022,8,5]],"date-time":"2022-08-05T08:54:02Z","timestamp":1659689642000},"page":"793-804","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Cross\u2010sectional study of the factors associated with the number of teeth in middle\u2010aged and older persons with intellectual disabilities"],"prefix":"10.1111","volume":"66","author":[{"given":"T.","family":"Nonoyama","sequence":"first","affiliation":[{"name":"Department of Preventive Dentistry and Dental Public Health, School of Dentistry Aichi Gakuin University  Nagoya Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"K.","family":"Nonoyama","sequence":"additional","affiliation":[{"name":"Department of Preventive Dentistry and Dental Public Health, School of Dentistry Aichi Gakuin University  Nagoya Japan"},{"name":"Nonoyama Dental Office  Togo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5555-3954","authenticated-orcid":false,"given":"Y.","family":"Shimazaki","sequence":"additional","affiliation":[{"name":"Department of Preventive Dentistry and Dental Public Health, School of Dentistry Aichi Gakuin University  Nagoya Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2022,8,5]]},"reference":[{"key":"e_1_2_11_2_1","unstructured":"8020 Promotion Foundation(2018)Reasons for tooth extractions in Japan: The second nationwide survey. Available at:https:\/\/www.8020zaidan.or.jp\/pdf\/Tooth\u2010extraction_investigation\u2010report\u20102nd.pdf(retrieved February 2022)."},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/cdoe.12746"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.1177\/0022034511414423"},{"key":"e_1_2_11_5_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12877\u2010021\u201002081\u20105"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/JPER.21-0415"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.2188\/jea.JE20120180"},{"key":"e_1_2_11_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jegh.2011.11.004"},{"key":"e_1_2_11_9_1","unstructured":"Cabinet Office(2020)Annual report on government measures for persons with disabilities. 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