{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T07:54:38Z","timestamp":1790841278629,"version":"4.1.0"},"reference-count":22,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T00:00:00Z","timestamp":1790726400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T00:00:00Z","timestamp":1790726400000},"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":["Gerodontology"],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>To describe nationwide temporal trends in insurance\u2010covered denture claims in Japan and examine their associations with prefectural socioeconomic indicators and population aging using the National Database of Health Insurance Claims and Specific Health Checkups (NDB).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Japan is experiencing rapid population aging while tooth retention among older adults is improving. How these demographic and oral\u2010health changes are reflected in the provision of insurance\u2010covered complete dentures and removable partial dentures (RPDs) remains unclear.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and Methods<\/jats:title>\n                    <jats:p>A prefecture\u2010level time\u2010series analysis of NDB dental claims from 2013 to 2018 was conducted. The primary outcome was the annual number of total denture claims per dental clinic. Category\u2010specific claims per clinic were also analysed for resin\u2010base complete dentures and resin\u2010base RPDs replacing 1\u20134, 5\u20138, 9\u201311 or 12\u201314 missing teeth. Prefectural income per capita, gross domestic product (GDP) per capita, and the proportion of residents aged \u2265\u200965\u2009years were linked with annual claim data. Temporal trends, Pearson correlations, and category\u2010specific multivariable linear regression models adjusted for calendar year were examined.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Total denture claims per clinic declined nationwide during the study period, from an average of 177 to 159 claims per clinic; complete denture claims showed the largest decrease (16%). The proportional share of complete dentures decreased, whereas the share of RPDs replacing 1\u20134 missing teeth increased. Total denture claims per clinic showed moderate negative correlations with income per capita (\n                      <jats:italic>r<\/jats:italic>\n                      \u2009=\u2009\u22120.518) and GDP per capita (\n                      <jats:italic>r<\/jats:italic>\n                      \u2009=\u2009\u22120.411), and a weak positive correlation with the proportion of residents aged \u2265\u200965\u2009years (\n                      <jats:italic>r<\/jats:italic>\n                      \u2009=\u20090.344). In category\u2010specific multivariable models, the proportion of residents aged \u2265\u200965\u2009years was positively associated with claims in all denture categories, and calendar year was negatively associated with claims.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Total insurance\u2010covered denture claims per clinic declined in Japan during 2013\u20132018, with regional variation and a larger relative contribution of small\u2010span RPD claims. These findings suggest that geriatric denture service planning should account for both population aging and regional socioeconomic context.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/ger.70125","type":"journal-article","created":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T06:54:43Z","timestamp":1790837683000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Trends in Denture Insurance Claims and Their Association With Socioeconomic Indicators and Population Aging in Japan"],"prefix":"10.1111","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-5270-7772","authenticated-orcid":false,"given":"Yu","family":"Yonezawa","sequence":"first","affiliation":[{"name":"Division of Removable Prosthodontics and Oral Rehabilitation, Department of Prosthodontics, School of Dentistry Iwate Medical University  Morioka Iwate Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Akiko","family":"Asano","sequence":"additional","affiliation":[{"name":"Division of Dental Education Department of Oral Medicine Iwate Medical University  Morioka Iwate Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8999-0132","authenticated-orcid":false,"given":"Yukinori","family":"Kuwajima","sequence":"additional","affiliation":[{"name":"Division of Orthodontics, Department of Developmental Oral Health Science, School of Dentistry Iwate Medical University  Morioka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hiroki","family":"Sato","sequence":"additional","affiliation":[{"name":"Division of Orthodontics, Department of Developmental Oral Health Science, School of Dentistry Iwate Medical University  Morioka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Saori","family":"Yonezawa","sequence":"additional","affiliation":[{"name":"Division of Removable Prosthodontics and Oral Rehabilitation, Department of Prosthodontics, School of Dentistry Iwate Medical University  Morioka Iwate Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shigemi","family":"Nagai","sequence":"additional","affiliation":[{"name":"Department of Restorative Dentistry and Biomaterials Sciences Harvard School of Dental Medicine  Boston Massachusetts USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takuya","family":"Kobayashi","sequence":"additional","affiliation":[{"name":"Division of Removable Prosthodontics and Oral Rehabilitation, Department of Prosthodontics, School of Dentistry Iwate Medical University  Morioka Iwate Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,9,30]]},"reference":[{"key":"e_1_2_13_2_1","volume-title":"Global Oral Health Status Report: Toward Universal Health Coverage for Oral Health by 2030","author":"World Health Organization","year":"2022"},{"key":"e_1_2_13_3_1","doi-asserted-by":"publisher","DOI":"10.1177\/0022034514537828"},{"key":"e_1_2_13_4_1","first-page":"2022","volume-title":"Survey of Dental Diseases","author":"Ministry of Health","year":"2023"},{"key":"e_1_2_13_5_1","doi-asserted-by":"publisher","DOI":"10.31662\/jmaj.2023\u20100007"},{"key":"e_1_2_13_6_1","doi-asserted-by":"publisher","DOI":"10.37737\/ace.24011"},{"key":"e_1_2_13_7_1","unstructured":"Ministry of Health Labour and Welfare \u201cOpen Data Japan NDB \u201d Updated (2022)."},{"key":"e_1_2_13_8_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1532\u2010849X.2009.00437.x"},{"key":"e_1_2_13_9_1","doi-asserted-by":"publisher","DOI":"10.1155\/2013\/498305"},{"key":"e_1_2_13_10_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00784\u2010013\u20101032\u20108"},{"key":"e_1_2_13_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0020\u20106539(20)34095\u20108"},{"key":"e_1_2_13_12_1","doi-asserted-by":"publisher","DOI":"10.1097\/PSY.0b013e318246dffb"},{"key":"e_1_2_13_13_1","doi-asserted-by":"publisher","DOI":"10.1186\/1744\u20109081\u20106\u201077"},{"key":"e_1_2_13_14_1","doi-asserted-by":"publisher","DOI":"10.1111\/ger.12670"},{"key":"e_1_2_13_15_1","doi-asserted-by":"publisher","DOI":"10.2186\/jpr.JPR_D_21_00161"},{"key":"e_1_2_13_16_1","doi-asserted-by":"publisher","DOI":"10.1177\/2380084420968742"},{"key":"e_1_2_13_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.mad.2004.07.011"},{"key":"e_1_2_13_18_1","unstructured":"National Institute of Population and Social Security Research \u201cPopulation Projections for Japan \u201d accessed December 29 2025."},{"key":"e_1_2_13_19_1","unstructured":"Ministry of Health Labour and Welfare \u201cSurvey of Medical Institutions (\u533b\u7642\u65bd\u8a2d\u8abf\u67fb) \u201d accessed December 29 2025."},{"key":"e_1_2_13_20_1","unstructured":"Ministry of Health Labour and Welfare \u201cElectronic Claims Computerization Diffusion Status (\u96fb\u5b50\u30ec\u30bb\u30d7\u30c8\u8acb\u6c42\u306e\u96fb\u5b50\u5316\u666e\u53ca\u72b6\u6cc1\u7b49) \u201d accessed December 29 2025."},{"key":"e_1_2_13_21_1","doi-asserted-by":"publisher","DOI":"10.3390\/bdcc9020043"},{"key":"e_1_2_13_22_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12877\u2010022\u201002985\u2010w"},{"key":"e_1_2_13_23_1","doi-asserted-by":"publisher","DOI":"10.3390\/healthcare10112173"}],"container-title":["Gerodontology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/ger.70125","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/ger.70125","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/ger.70125","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T06:54:46Z","timestamp":1790837686000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/ger.70125"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,9,30]]},"references-count":22,"alternative-id":["10.1111\/ger.70125"],"URL":"https:\/\/doi.org\/10.1111\/ger.70125","archive":["Portico"],"relation":{},"ISSN":["0734-0664","1741-2358"],"issn-type":[{"value":"0734-0664","type":"print"},{"value":"1741-2358","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,9,30]]},"assertion":[{"value":"2026-03-05","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-09-15","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-09-30","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"ger.70125"}}