{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T07:06:09Z","timestamp":1792479969545,"version":"4.5.0"},"reference-count":30,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2019,8,3]],"date-time":"2019-08-03T00:00:00Z","timestamp":1564790400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>We evaluated the effect of the National Health Insurance (NHI) policy including dental sealant on changes in the prevalence of sealant and caries, and examined how NHI affected sealant utilization and untreated caries in children from diverse income groups in South Korea. We used a multivariate logistic regression analysis to explore the effects of three stages of dental sealant policy (pre-policy: 2007\u20132009, first post-policy: 2010\u20132012, and second post-policy: 2013\u20132015) on the prevalence of dental sealant and untreated caries. Participant data (N = 8161, aged 6\u201314 years) were derived from the Korea National Health and Nutrition Examination Survey (2007\u20132015). We also conducted subgroup analysis to determine the effects of the NHI policy on dental sealant and untreated caries by income level. Implementation of dental insurance coverage was associated with higher likelihood of using dental sealant (odds ratio (OR) = 1.39 (95% confidence interval (CI): 1.18\u20131.63) for the first period and OR = 1.58 (95% CI: 1.33\u20131.87) for the second period) and lower odds of having untreated caries (OR = 0.79 (95% CI: 0.64\u20130.98) for the first period and OR = 0.65 (95% CI: 0.51\u20130.83) for the second period) after controlling for covariates. Results revealed that there was a greater prevalence of dental sealant and a lower prevalence of untreated caries in both middle- and low-income households compared to high-income households. The higher prevalence of dental sealant and lower untreated caries after the policy implementation. Moreover, we demonstrated children from low-or middle-income households were more associated with increasing dental sealant use and a declining prevalence of caries.<\/jats:p>","DOI":"10.3390\/ijerph16152773","type":"journal-article","created":{"date-parts":[[2019,8,5]],"date-time":"2019-08-05T03:25:22Z","timestamp":1564975522000},"page":"2773","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Children\u2019s Dental Sealant Use and Caries Prevalence Affected by National Health Insurance Policy Change: Evidence from the Korean National Health and Nutrition Examination Survey (2007\u20132015)"],"prefix":"10.3390","volume":"16","author":[{"given":"Minsung","family":"Sohn","sequence":"first","affiliation":[{"name":"Department of Health and Care Administration, The Cyber University of Korea, 106 Bukchon-ro, Jongno-gu, Seoul 03051, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sujin","family":"Park","sequence":"additional","affiliation":[{"name":"Division of Hospital Management Support, Seoul Health Foundation, 31 Maebongsan-ro, Mapo-gu, Seoul 03909, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sungwon","family":"Lim","sequence":"additional","affiliation":[{"name":"School of Nursing, University of Washington, Health Sciences Building, Room T-507, 1959 NE Pacific Street, Seattle, WA 98195, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6789-9247","authenticated-orcid":false,"given":"Hee-Jung","family":"Park","sequence":"additional","affiliation":[{"name":"Department of Dental Hygiene, College of Health Science, Kangwon National University, 346 Hwangjo-gil, Dogye-up, Samcheok-si, Gangwon-do 25945, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2019,8,3]]},"reference":[{"key":"ref_1","first-page":"54","article-title":"Use of dental care and effective preventive services in preventing tooth decay among U.S. Children and adolescents\u2014Medical Expenditure Panel Survey, United States, 2003\u20132009 and National Health and Nutrition Examination Survey, United States, 2005\u20132010","volume":"63","author":"Griffin","year":"2014","journal-title":"MMWR Suppl."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"132","DOI":"10.1111\/j.1752-7325.2007.00036.x","article-title":"Oral health-related quality of life of children by dental caries and fluorosis experience","volume":"67","author":"Do","year":"2007","journal-title":"J. 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Hyg."}],"container-title":["International Journal of Environmental Research and Public Health"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1660-4601\/16\/15\/2773\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T13:12:56Z","timestamp":1760188376000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1660-4601\/16\/15\/2773"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,8,3]]},"references-count":30,"journal-issue":{"issue":"15","published-online":{"date-parts":[[2019,8]]}},"alternative-id":["ijerph16152773"],"URL":"https:\/\/doi.org\/10.3390\/ijerph16152773","relation":{},"ISSN":["1660-4601"],"issn-type":[{"value":"1660-4601","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,8,3]]}}}