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Changes in oral health indicators due to implementation of the National Health Insurance Services coverage for first molar dental sealant for children and adolescents in South Korea

BACKGROUND: In South Korea, dental sealant was included in the National Health Insurance Services (NHIS) coverage for the first molar for ages 6–14 in December 2009. The second molar was included in 2012, and the age of insurance coverage was extended to under 18 in 2013. This study aimed to verify...

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Autores principales: Choi, Jin-Sun, Ma, Deuk-Sang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7392644/
https://www.ncbi.nlm.nih.gov/pubmed/32727427
http://dx.doi.org/10.1186/s12903-020-01201-8
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author Choi, Jin-Sun
Ma, Deuk-Sang
author_facet Choi, Jin-Sun
Ma, Deuk-Sang
author_sort Choi, Jin-Sun
collection PubMed
description BACKGROUND: In South Korea, dental sealant was included in the National Health Insurance Services (NHIS) coverage for the first molar for ages 6–14 in December 2009. The second molar was included in 2012, and the age of insurance coverage was extended to under 18 in 2013. This study aimed to verify the effectiveness of an NHIS dental sealant coverage policy for children and adolescents by comparing the changes in first molar oral health indicators before and after policy implementation. METHODS: The Korea National Health and Nutrition Examination Survey data were analyzed; the fourth period (2007–2009) provided data for before and the sixth period (2013–2015) provided data for after policy implementation. The proportion of individuals with first-molar sealant, decay-missing-filled first molar permanent teeth, and single crowns in the group aged 11–20 years were calculated. Data were analyzed using chi-square for complex samples and the complex samples general linear model. In addition, complex-sample logistic regression analysis was performed to confirm the association between factors. Results: Compared with non-beneficiaries, among policy beneficiaries, sealant ownership increased by 7.7% (from 27.8 to 35.5, P < 0.001), and the number of permanent teeth with sealant per capita increased by approximately 0.4 to 0.8 (P < 0.001). The proportion of individuals with decay-missing-filled permanent teeth decreased by 9.1% (from 68.4 to 59.3, P < 0.001), and the average decay-missing-filled permanent teeth index per person decreased by approximately 2.0 to 1.5 (P < 0.001). The rate of single-crown holders decreased by 2.7% (from 8.7 to 6.0, P > 0.05), and the average single-crown index decreased by approximately 0.11 to 0.08 per person(P > 0.05). The number of sealants increased with age and household income (P < 0.001). The mother’s education level affected sealant experience (P < 0.05). The caries rate was higher in females and older respondents (P < 0.001). CONCLUSIONS: The sealant covered by NHIS contributed to decreasing dental caries in Korea. However, policies that can reduce oral health inequality should also be considered, and a follow-up study is required for long-term sealant maintenance in Korea.
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spelling pubmed-73926442020-08-04 Changes in oral health indicators due to implementation of the National Health Insurance Services coverage for first molar dental sealant for children and adolescents in South Korea Choi, Jin-Sun Ma, Deuk-Sang BMC Oral Health Research Article BACKGROUND: In South Korea, dental sealant was included in the National Health Insurance Services (NHIS) coverage for the first molar for ages 6–14 in December 2009. The second molar was included in 2012, and the age of insurance coverage was extended to under 18 in 2013. This study aimed to verify the effectiveness of an NHIS dental sealant coverage policy for children and adolescents by comparing the changes in first molar oral health indicators before and after policy implementation. METHODS: The Korea National Health and Nutrition Examination Survey data were analyzed; the fourth period (2007–2009) provided data for before and the sixth period (2013–2015) provided data for after policy implementation. The proportion of individuals with first-molar sealant, decay-missing-filled first molar permanent teeth, and single crowns in the group aged 11–20 years were calculated. Data were analyzed using chi-square for complex samples and the complex samples general linear model. In addition, complex-sample logistic regression analysis was performed to confirm the association between factors. Results: Compared with non-beneficiaries, among policy beneficiaries, sealant ownership increased by 7.7% (from 27.8 to 35.5, P < 0.001), and the number of permanent teeth with sealant per capita increased by approximately 0.4 to 0.8 (P < 0.001). The proportion of individuals with decay-missing-filled permanent teeth decreased by 9.1% (from 68.4 to 59.3, P < 0.001), and the average decay-missing-filled permanent teeth index per person decreased by approximately 2.0 to 1.5 (P < 0.001). The rate of single-crown holders decreased by 2.7% (from 8.7 to 6.0, P > 0.05), and the average single-crown index decreased by approximately 0.11 to 0.08 per person(P > 0.05). The number of sealants increased with age and household income (P < 0.001). The mother’s education level affected sealant experience (P < 0.05). The caries rate was higher in females and older respondents (P < 0.001). CONCLUSIONS: The sealant covered by NHIS contributed to decreasing dental caries in Korea. However, policies that can reduce oral health inequality should also be considered, and a follow-up study is required for long-term sealant maintenance in Korea. BioMed Central 2020-07-29 /pmc/articles/PMC7392644/ /pubmed/32727427 http://dx.doi.org/10.1186/s12903-020-01201-8 Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Research Article
Choi, Jin-Sun
Ma, Deuk-Sang
Changes in oral health indicators due to implementation of the National Health Insurance Services coverage for first molar dental sealant for children and adolescents in South Korea
title Changes in oral health indicators due to implementation of the National Health Insurance Services coverage for first molar dental sealant for children and adolescents in South Korea
title_full Changes in oral health indicators due to implementation of the National Health Insurance Services coverage for first molar dental sealant for children and adolescents in South Korea
title_fullStr Changes in oral health indicators due to implementation of the National Health Insurance Services coverage for first molar dental sealant for children and adolescents in South Korea
title_full_unstemmed Changes in oral health indicators due to implementation of the National Health Insurance Services coverage for first molar dental sealant for children and adolescents in South Korea
title_short Changes in oral health indicators due to implementation of the National Health Insurance Services coverage for first molar dental sealant for children and adolescents in South Korea
title_sort changes in oral health indicators due to implementation of the national health insurance services coverage for first molar dental sealant for children and adolescents in south korea
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7392644/
https://www.ncbi.nlm.nih.gov/pubmed/32727427
http://dx.doi.org/10.1186/s12903-020-01201-8
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