ArticleBMC oral health2020
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.
Article in BMC oral health, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
10 citing papers in PubMed, 14 citations in OpenAlex.
- Are online search trends associated with changes in dental sealant utilization?: focusing on key influencing factors.BMC oral health · 2026Article
- Trends in Pit and Fissure Sealant Use and Decayed, Missing, and Filled Teeth Rates Among Korean Adolescents After Including Dental Sealants Under Insurance Coverage.Journal of public health dentistry · 2026Article
- Upstream Interventions to Promote Oral Health and Reduce Oral Health Inequalities: A Scoping Review.Community dentistry and oral epidemiology · 2026Article
- Effectiveness of dental sealant under insurance coverage in South Korea.Clinical oral investigations · 2025Article
- The influence factors on pit and fissure sealing behavior of 12-year-old children: a cross-sectional study in Zhejiang, China.BMC pediatrics · 2024Article
- Survival Analysis of Glass Ionomer Cement and Resin-Based Sealant Retention: A 10-Year Follow-Up Study.Medicina (Kaunas, Lithuania) · 2024Article
- Adjusting the british triage system for dental care in South Korean correctional institutions: a cross-sectional study.BMC oral health · 2023Article
- The association of food insecurity with tooth decay and periodontitis among middle-aged and older adults in the United States and Korea.Gerodontology · 2023Article
- Has the Health Insurance Coverage of Scaling Contributed Positively to Periodontal Health in Korea?International journal of environmental research and public health · 2020Article
- Does the Registered Dentists' Program Alleviate the Socioeconomic Gap in the Use of Dental Sealants?International journal of environmental research and public health · 2020Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundIn 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.
methodsThe 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.
resultsCompared 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).
conclusionsThe 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.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.