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제7기(2016-2018년) 국민건강영양조사 자료를 이용한 한국 아동·청소년의 치아우식 위험요인 분석
정세환 ( Se-hwan Jung ) 대한예방치과·구강보건학회 2023 大韓口腔保健學會誌 Vol.47 No.2
Objectives: The purpose of this study was to assess the association between the prevalence of dental caries and the risk factors using data from the 7th National Health and Nutrition Examination Survey (KNHANES) for improving the dental caries risk assessment model in child continuing care program from the registered dentists. Methods: The oral examination integrated data of the 7th wave (2016-2018) were downloaded from KNHANES website. The subjects of analysis were children ages 1 to 5 years for the primary teeth caries and children ages 6 to 18 years for permanent teeth caries. Dental caries risk factors included socio-demographic status (age, gender, region, household income), oral health behaviors (brushing teeth frequency, brushing teeth before bed, daily intake of sugar), dental care utilization (dental examination, preventive dental care, unmet dental needs), and the prevalence of dental caries in the parents. Complex samples logistic regression models were used to analyze the data. Results: While the dental caries of children and adolescents were associated with age and gender, it was not associated with region and household income. In addition, there was no association between brushing teeth and dental caries, but it was found between daily sugar intake and primary teeth caries. The association between unmet dental needs and dental caries was clear, and the primary teeth caries were associated with dental examination or preventive dental care. The prevalence of dental caries in the parents was associated with primary and permanent dental caries in their children, respectively. Conclusions: Although the results of this study were obtained from the representative data in the national level, the evidence was limited because of cross-sectional study. Therefore, it is necessary to conduct follow-up studies, such as a cohort study or clinical trial for the development of dental caries assessment model that are evidence-based.
한국의료패널의 치과외래 이용 및 의료비 지출에 대한 4년간(2008-2011)의 변화추이
정세환(Se-Hwan Jung) 대한치과의사협회 2014 대한치과의사협회지 Vol.52 No.5
Korea Health Panel Survey (KHPS) has been conducted to provide nationally representative estimates of health care use and expenditures for non-institutionalized population in Korea since 2008. The aim of this study was to present estimates from KHPS on dental utilization and expenditures from 2008 to 2011. While weighted estimates were presented for each year from 2008 to 2011, the focus of this study was on the 2011 estimates and changes in dental utilization and expenditures between 2008 and 2011. Weighted estimates were obtained using population weights and statistical significances were analysed by independent t-test or ANOVA test using SPSS version 20 for Windows. In 2011, 21.1% of Korean population obtained outpatient dental services from dentists. From 2008 to 2011, the percent of people with a dental visit in each year increased slightly. In 2011, the mean number of dental visits was 4.46. While the mean number of dental visits remained stable by 2010, it increased slightly in 2011. The total annual dental expense in 2011 for people with a visit was about 460,000 Korean Won and 10% higher in 2008. In summary, this study results highlight low rates of dental utilization and high dental expenses in Korean population.
신뢰성 있는 멀티캐스트 전송을 위한 에러 제어 방법 설계
정세환(Se-hwan Jung),박용진(Yong-jin park) 한국정보과학회 2003 한국정보과학회 학술발표논문집 Vol.30 No.2Ⅲ
인터넷 멀티캐스트 서비스는 네트워크 자원의 효율적 사용이라는 장점과 15년 이상의 연구, 개발에도 불구하고 아직 보편화 되지 못하고 있다. 이는 멀티캐스트 서비스가 망에서 지원이 잘 되지 않고 있고, 멀티캐스트 망 관리의 어려움, Killer Application 부재 등 많은 문제점이 있고, 멀티캐스트 서비스의 신뢰성 보장이 되지 않고 있다는 것도 하나의 문제점 이라고 할 수 있다. 본 논문에서는 인터넷 멀티캐스트 서비스의 신뢰성 보장을 위한 방법으로 기존에 발표된 트리기반의 프로토콜인 RMTP (Reliable Multicast Transport Protocol)[1], [2]의 단점을 보완하여 신뢰성 있는 멀티캐스트 전송을 위한 방법을 제안하고자 한다.
정세환(Se-Hwan Jung) 대한치과의사협회 2016 대한치과의사협회지 Vol.54 No.11
The purpose of this study was to examine dental care utilization and expenditures among children aged 0 to 19 years using Korea Health Panel Survey (KHPS) data in 2008 - 2013. Weighted estimates were nationally representative and statistical significances were analysed by χ² test or adjusted Wald test using STATA 13 software. While dental care utilization increased steadily among children from 2008 through 2013, less than one-third the children received dental care in 2013. Compared with 2008, the proportion of restorative care, oral surgery, preventive care decreased and the proportion of orthodontic care, prosthetic care increased. While the proportion of amalgam markedly decreased, the proportion of resin increased. This study highlight socioeconomic disparities in dental utilization and expenditures among children. Especially the findings provide a baseline assessment for examining trends on dental care for children in the future.
강릉시 지역아동센터 치과주치의사업의 1년 후 성과평가 및 사업참여 아동의 중도탈락 이유
정세환 ( Se Hwan Jung ),신보미 ( Bo Mi Shin ),박덕영 ( Deok Young Park ),마득상 ( Deuk Sang Ma ) 대한예방치과·구강보건학회 2013 大韓口腔保健學會誌 Vol.37 No.2
Objectives: This study aimed to determine the effectiveness of the continuous dental care program of the Community Child Center in Gangneung city by evaluating one-year outcomes and determining the reasons for dropout. Methods: A total of 180 children in the study group were provided with continuous dental care in 2008. The control group consisted of 131 children whose 2009 dental records from Gangneung- Wonju National University Dental Hospital were retrospectively reviewed. The outcome of dental caries prevention was evaluated by prevalence rates and number of decayed teeth. The evaluation of dental care outcome was based on cost and frequency of dental care. A chi-square test and Mann-Whitney U test were used to assess differences between the study group and the control group. In addition, the dropout rate and the reasons for dropout by the time of dental service supply were investigated for 427 children who participated in this program in 2010. Results: Dental caries prevention results of the study group were better than those of the control group, but significant differences were found only in the dt rates of girls (P<0.001). The average frequency of dental care per child in the study group was lower than that of the control group. The average cost of dental care per child was 56,910 won per boy in the study group, 124,893 won per boy in the control group, 71,657 won per girl in the study group, and 127,296 won per girl in the control group. Significant differences in dental care results were found for both boys and girls (P<0.05). The reasons for dropout were leaving the center, absence, use of another dental clinic, parents` or child`s rejection of the program, and disability. Conclusions: On the basis of these results, we could logically assume that promoting oral health and reducing the cost of dental care might be achieved through the introduction of a continuous dental care program for vulnerable children and adolescents in the community.
정세환(Se-Hwan Jung),박고운(Ko-Woon Park),김철신(Cheoul-Sin Kim) 대한치과보험학회 2010 대한치과보험학회지 Vol.1 No.1
Objectves : The purpose of this study was to obtain the logical finance estimation data which was needed for National Health Insurance(NHI) coverage for Korean elderly"s denture service. Methods : For the estimation of the denture need, we used 2006 Korean National Oral Health Survey Data and estimated the finance for NHI corporation by using influenza vaccination rate (75.7%) among the elderly, contribution rate (70.0%) of NHI and custom fee (100.0% or 80.0%). Results and Conclussion : The requirements of full and partial denture for elderly people were 611,180 units and 1,645,636 units respectively. Health insurance budget needed about 1,783.4billion won in custom fee (100.0%) and 1,426.7billion won in custom fee (80.0%) for elderly over 65 year old.