ArticleScientific reports2020
Did expanded access to denture services improve chewing ability in the Korean older population? Results of a regression discontinuity analysis.
Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 7 citations in OpenAlex.
- Upstream Interventions to Promote Oral Health and Reduce Oral Health Inequalities: A Scoping Review.Community dentistry and oral epidemiology · 2026Article
- The Effects of the Expansion of Dental Care Coverage for the Elderly.Healthcare (Basel, Switzerland) · 2024Article
- Dental Services Use: Medicare Beneficiaries Experience Immediate And Long-Term Reductions After Enrollment.Health affairs (Project Hope) · 2023Article
- Age period cohort analysis of chewing ability in Korea from 2007 to 2018.Scientific reports · 2021Article
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Authors and funding
2 authors at 1 institution in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The Korean National Health Insurance expanded the dental insurance in 2012 to cover denture services for older adults. We analyzed whether the new policy improved of chewing ability in the eligible population. We used regression discontinuity (RD), a quasi-experimental design, to analyze the effects of the expanded dental insurance. We analyzed data from the Korea National Health and Nutrition Examination Survey conducted in 2010 and 2015. The study population consisted of two groups: the treatment group, aged 65 and above who were eligible; and the control group, under 65 years of age who were not eligible for the dental insurance benefit. The main outcome evaluated was self-reported chewing difficulty. The RD analysis showed that in 2015, the chewing difficulty in aged above 65 was 2.2% lower than in those aged under 65. However, the difference was not statistically significant (P = 0.76). The results from the falsification testing of predetermined covariates, placebo cut-offs, and bandwidths validated our main conclusion. The expansion of dental insurance benefits to include dentures for the older adults did not improve the chewing ability in the eligible population. Future studies should evaluate long-term outcomes of oral health as well as the social impacts on the elderly.
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