Many countries provide preventive dental care for children to reduce inequalities. In Korea, the registered dentists’ program was implemented to promote oral health and prevent oral diseases in primary school students. This study aimed to evaluate the registered dentist program through the sealant utilization rate using national cohort data and to compare the socioeconomic gap of the cohorts by participation. The sample cohort data were obtained from the National Health Insurance Sharing Service (NHISS) in South Korea. The utilization of dental sealants was analyzed using the chi-square test according to the independent variables of each year. To identify the independent effects of participation in the registered dentists’ program, a panel logistic regression analysis of the utilization of dental sealants was performed. The participants were 1.35 times more likely to have dental sealants than non-participants. The significance of income quintiles disappeared in the case groups. The gap became more obvious in the employees of the control group even after adjusting for all variables. Implementing oral health programs can alleviate inequality with a relative increase in utilization in vulnerable populations.
This study aimed to estimate the financial budget of light-curing composite resin fillings based on the expanded coverage of the National Health Insurance Service (NHIS), called "Moon Care." Methods: The estimated population with dental caries and the amount of light-curing composite resins used were determined. The fees for the resin fillings per tooth were considered for the calculations. The expected budget for the next five years for children and adolescents aged 5-12 and 5-19 years were calculated. Results: During the first year of the coverage, the budget for children and adolescents aged <19 years was estimated to be 201.8 billion South Korean won (5-9 years, 17.9 billion South Korean won; 10-14 years, 76.6 billion South Korean won; and 15-19 years, 107.3 billion South Korean won). The total budget for the next five years for children and adolescents aged <19 years was estimated at 946.4 billion South Korean won. Likewise, the budget for children aged <12 years during the first year of the coverage was estimated at 63.9 billion South Korean won (5-9 years, 17.9 billion South Korean won and 10-12 years, 46 billion South Korean won), and the total budget for the next five years was estimated at 315.9 billion South Korean won. Conclusions: Government healthcare plans should be established based on treatment needs and financial estimations. All the items in the NHIS, including the light-curing composite resin filling, should be considered based on their contribution to oral health promotion. Furthermore, in the long term, the coverage for preventive health services should be included in the health insurance.
This study aimed to evaluate the registered dentists' program, from the dentist's perspective, before its nationwide implementation. Methods: In-depth interviews were conducted with 18 dentists who had participated in the registered dentists' program in G Province. A questionnaire was prepared based on previous research. The data were collected by transcription of interview recordings. Qualitative research methodology was implemented and the data were coded according to the grounded theory. A paradigm model was presented and the core categories were indicated. Results: The findings were organized into 6 categories, 25 subcategories, and 315 codes, based on open coding of the first categorization of collected data. The central phenomenon was found to be the experience of dissatisfaction with the program. The causal conditions were shown as problems of the program, while contextual and intervening conditions were shown as passive participation of dentists and positive effects of the program, respectively. The action/interaction strategies were summarized as an improvement plan and the consequence was an increased intention to participate. Conclusions:The study proposes the need to strengthen primary dental care through this registered dentists' program, by performing continuous evaluations. The standards and guidelines, cooperation of participants, and appropriate compensation should be considered to promote successful implementation.
Tetragonal BaTiO3 with a high dielectric property is used as the principal material for multilayer ceramic capacitors (MLCCs), a core component of state-of-the-art electronic devices. However, Ba2+ at BaTiO3 surfaces can be dissolved in aqueous-based media, and such chemical instability has been a major obstacle to environmentally friendly aqueous-based MLCC processes. To understand the behavior of Ba2+ dissolution, we investigated H2O(l) and (H+ + Cl–)(aq.) adsorption on the single crystal surfaces of BaTiO3(100), (111), and (110) using density functional theory calculations. We found that the onset pH for Ba2+ dissolution is 1.65, 2.46, and 3.18 for BaTiO3(100), (111), and (110), respectively, indicating that the thermodynamics of Ba2+ dissolution are facet dependent. The onset pH and the coordination number (CN) of Ba on each surface shows a linear correlation, suggesting that the CN of Ba is a critical factor that can predict the Ba2+ dissolution thermodynamics.
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