認知過程에 따른 歷史敎科의 探究方法 硏究

鄭善影(Chung Sun-Young) 역사교육연구회 1979 歷史敎育 Vol.25 No.-

고농도 과산화수소와 플라즈마 아크를 이용한 미백 치료에 있어서 불소의 효과

정선영 ( Sun Young Chung ),이영은 ( Young Eun Lee ),안상헌 ( Sang Hun Ahn ),양해영 ( Hae Young Yang ),전은숙 ( Eun Suk Jeon ),최연희 ( Youn Hee Choi ),송근배 ( Keun Bae Song ) 한국치위생과학회 2011 치위생과학회지 Vol.11 No.4

This study evaluated whether fluoride treatment can affect recovery of the irregularity of enamel surface after tooth whitening with a high concentration of hydrogen peroxide (HP) activated by plasma arc light. A total of 36 bovine teeth stained with coke were used in this experiment. The specimens were classified into following three groups (two different commercial plasma arc groups and a control group without light curing source): (1) 35% HP gel only, (2): 35% HP gel and Plasma arc A, and (3) 35% HP gel and Plasma arc B. To measure color changes and surface morphologies before and after the bleaching, colorimeter and scanning electron microscopy were used, respectively. When the specimens were bleached with hydrogen peroxide and plasma arc lights, the bleaching effect was greater than when only hydrogen peroxide gels were used (Kruskal-Wallis test, p<0.05). In addition, plasma arc B showed the more color changes than plasma arc A (Bonferroni post-hoc test, p<0.05). The surfaces of the teeth treated with fluoride gel after the whitening treatment came to be smooth. Therefore, the results of this study suggested that the fluoride application for patients who got tooth whitening therapy with a high concentration of hydrogen peroxide gels activated by plasma arc light will be effective to recover rough enamel surfaces.

임플란트 만족도와 치료 의사 결정에 대한 영향 요인 연구

정선영 ( Sun Young Chung ),조진현 ( Jin Hyun Cho ),조철호 ( Chul Ho Cho ),최연희 ( Youn Hee Choi ),송근배 ( Keun Bae Song ) 대한예방치과·구강보건학회 2011 大韓口腔保健學會誌 Vol.35 No.2

Objectives. This study was designed to examine the causal relationships between factors associated with satisfaction of implant treatment and willingness towards retreatment, as well as willingness to recommend others mediated by treatment satisfaction. Methods. A total of 257 participants aged 18 to 79 years that had visited 6 dental clinics located in Daegu city participated in this cross-sectional study. For the baseline, information on demographic status and treatment characteristics were obtained from each participant and 6 months after the implant surgery was completed, the patients` satisfaction was surveyed. Using four latent variables related to implant therapy such as functional aspects, maintenance aspects, aesthetic aspects and monetary aspects, a structural equation modeling analysis was performed. Results. Functional aspects, maintenance aspects and aesthetic aspects had a positive effect on treatment satisfaction, whereas the monetary aspect shows no significant effect on treatment satisfaction. Functional aspects (β=0.562, p<0.05) and aesthetic aspects (β=0.454, p<0.05) had a stronger effect on treatment satisfaction compared to maintenance aspects (β=0.149, p<0.05). In addition, treatment satisfaction critically influenced the willingness towards retreatment (β=0.711, p<0.05) and willingness to provide recommendations (β=0.743, p<0.05). Conclusions. The results obtained from this study may contribute to enhanced treatment satisfaction for patients, as well as improve efficiency of treatment for dentists following implant surgery based on factors related to treatment satisfaction and causal relationships between those factors and retreatment, as well as recommendation mediated by treatment satisfaction.

다양한 탄수화물 배양 조건에 따른 xylitol-resistant Streptococcus mutans와 xylitol-resistant Streptococcus sobrinus의 독력 비교

정선영 ( Sun Young Chung ),김지혜 ( Ji Hye Kim ),최연희 ( Youn Hee Choi ),송근배 ( Keun Bae Song ) 대한예방치과·구강보건학회 2011 大韓口腔保健學會誌 Vol.35 No.1

Objective. This study aimed to compare the cariogenic traits in xylitol-resistant (XR) mutans streptococci (MS) exposed to various carbohydrates. Methods. To select the XR MS, S. mutans KCTC 3065 and S. sobrinus KCTC 3308 were cultured in TYE medium containing 0.5% glucose and 1% (66 mM) xylitol at 37℃, 10% CO2 conditions for 30 days. Both the strains were divided into the following 4 groups in terms of the culture medium that was used: (1) 0.5% glucose containing basal culture medium (BCM), (2) BCM plus 0.5% sucrose (BCM-S), (3) BCM plus 0.5% fructose (BCM-F), and (4) BCM plus 0.5% maltose (BCM-M). To examine the cariogenic traits, cell growth, acid production, mRNA expressions related to glucan synthesis, and the formation of extracellular polysaccharides (ECPs) in each culture media, they were measured by ELISA, pH meter, real-time RT-PCR, and TEM, respectively in the 4 culture media. Results. The characteristics of xylitol-resistant MS were identified by confirming that the growth curve on glucose in the presence of xylitol was identical to that in its absence. Both the S. mutans and S. sobrinus expressed the final pH without any significant differences depending on carbohydrate sources. Cell growth, gene expression levels and the formation of ECPs were apparently distinct in S. mutans depending on sugar sources whereas these were not different in S. sobrinus except for BCM-S. Conclusions. The virulence of XR S. mutans responded differently when grown in various carbohydrates, yet the virulence of XR S. sobrinus, in general, showed no difference depending on sugar sources except for BCM-S. Further study is needed to explain the metabolite mechanism related to carbohydrate sources inside the XR MS cells.

Victoria 초기 영국의 빈민교육

정선영(Sun Young Chung) 단국사학회 1983 史學志 Vol.17 No.1

N/A

다양한 탄수화물 함유 배지 사용에 따른 자일리톨 감성 및 내성 Streptococcus mutans의 독력 비교

정선영 ( Sun Young Chung ),이영은 ( Young Eun Lee ),안상헌 ( Sang Hun Ahn ),김혜영 ( Hye Young Kim ),최연희 ( Youn Hee Choi ),송근배 ( Keun Bae Song ) 대한예방치과·구강보건학회 2011 大韓口腔保健學會誌 Vol.35 No.4

연구목적. Streptococcus mutans ( S. mutans)는 치아 우식의 중요한 병인 중 하나로, S. mutans가 자일리톨에 장기간 노출되었을때 자일리톨에 대한 감수성을 잃고 자일리톨에 의한 성장 억제를 보이지 않는 자일리톨 내성균주가 형성된다고 보고된 바 있다. 본 연구는 자일리톨 내성균주와 자일리톨 감성균주가 다양한 탄수화물 조건에서 배양되었을 때의 독력 인자 발현 양상을 비교하고자 하였다. 연구방법. S. mutans KCTC3065를 포도당이 포함된 TYE 배지에 1% 자일리톨을 처리하여 자일리톨 내성균주를 형성한 후, 자일리톨 감성균주와 함께 포도당 단독 및 포도당에 자당, 과당, 엿당이 각각 포함된 배지에서 배양하였다. S. mutans의 독력과 관련이 있는 성장과 산생성, 글루칸 합성 관련 유전자 발현 및 세포외 다당류 합성을 살펴보았다. 연구결과. 자일리톨 내성규주는 감성균주와 비교하여 pH의 차이 없이 최종 성장, 글루칸 합성 관련 유전자 발현 및 세포외 다당류 합성이 모두 저하된 양상을 나타내었다. 탄수화물 종류별 특성을 살펴보면, 자일리톨 감성균주와 내성균주 모두 포도당과 비교하여 포도당과 엿당이 혼합된 배지에서 최종 성장이 증가한 반면, gtfB와 gtfD의 발현은 감소하였다. 또한 포도당과자당 그리고 포도당과 과당이 혼합된 배지에서 최종 성장이 감소한 반면, gtfB와 gtfD의 발현은 증가하였다. 그러나 감성균주와 내성균주 모두 배양 조건과 관계없이 산생성에서는 차이를 보이지 않았다. 투과전자현미경 관찰 결과, 포도당과 엿당이 혼합된 배지에서 특히 자일리톨 내성균주의 세포외 다당류 합성이 저하된 것을 확인할 수 있었다. 결론. 자일리톨 내성균주는 감성균주에 비해 우식원성이 저하되어 있으며, 탄수화물 종류에 따라 자일리톨 내성균주와 감성균주의 독력인자가 다르게 발현되었다.

한국 성인의 지역적 요인에 따른 치주 상태 비교

정선영 ( Sun Young Chung ),정성화 ( Seong Hwa Jeong ),빈성오 ( Sung Oh Bin ),최연희 ( Youn Hee Choi ),송근배 ( Keun Bae Song ) 대한예방치과·구강보건학회 2010 大韓口腔保健學會誌 Vol.34 No.4

연구목적. 치주질환은 성인의 구강 상태에 영향을 미치는 주요한 요인으로, 최근 사회경제적 요인이나 지역적 차이에 따른 구강상태에 대한 관심이 증가하고 있다. 본 연구는 2000년 전국민 구강건강실태조사 자료를 활용하여 한국 성인을 대상으로 거주지역 요인과 치주 상태와의 관련성을 알아보고자 하였다. 연구방법. 국민구강건강실태조사2000 데이터베이스에서 18세에서 90세 6,525명의 자료를 선별하여 지역(대도시, 중소도시, 농촌)에 따라 구분하였다. 구강검사는 세계보건기구(WHO) 기준에 따라 실시하였고, 치주 상태는 지역사회 치주지수(CPI)에 근거하여 결정하였다. 다중회귀분석을 통해 지역적 요인과 치주 상태와의 관련성을 분석하였으며, 통계 분석은 SAS 9.1.3을 이용하였다. 연구결과. 지역에 따른 치주염 유병률은 대도시, 중소도시, 농촌에서 각각 21.4%, 30.0%, 32.6%로 나타났다(p<0.01). 지역적 요인과 치주 상태와의 관련성을 살펴본 결과 다른 지역과 비교하여 농촌에서 치주염 유병률이 높은 것으로 나타났으나 (OR=1.776, 95% CI [1.562, 2.020]), 사회경제적 요인, 주관적 건강 인식, 건강 관련 행동, 전신질환 유무의 혼란 변수를 보정한 결과, 중소도시에서 가장 높은 것으로 나타났다(OR=1.218, 95% CI [1.026, 1.446]). 결론. 우리나라 성인의 치주 상태는 거주 지역 요인과 관련이 있는 것으로 나타났으며, 본 연구 결과는 구강건강의 지역적 불평등 해소를 위한 대책 마련에 기여할 수 있을 것으로 기대한다.

한국 성인의 미충족 치과 치료와 DMFT index와의 관련성

정선영 ( Sun-Young Chung ),조자원 ( Ja-Won Cho ),정윤숙 ( Yun-Sook Jung ),김혜영 ( Hye-Young Kim ),김지영 ( Ji-Young Kim ),최연희 ( Youn-Hee Choi ),송근배 ( Keun-Bae Song ) 대한예방치과·구강보건학회 2017 大韓口腔保健學會誌 Vol.41 No.4

Objectives: Unmet needs for dental treatment are one of the potential contributing factors to poor oral health because oral health problems worsen if left untreated. This study aimed to demonstrate the prevalence of and the causes for unmet dental needs, and to evaluate the association between unmet needs for dental treatment and oral health status. Methods: Data on 3,883 subjects aged ≥18 years from the Korean National Oral Health Survey 2006 were analyzed. Information regarding unmet needs for dental treatment was obtained using standardized questionnaires. Eight trained dentists examined decayed, missing, or filled teeth (DMFT). Multiple regression models were built to assess the association between unmet needs for dental treatment and the DMFT scores. Results: The prevalence of perceived unmet needs for dental treatment was 34.7% among the adult Korean population. Economic constraints were the main cause (38.6%) for unmet dental needs. The average DMFT scores were higher in the subjects with unmet needs for dental treatment than in those without. In individuals with unmet needs for dental treatment within the past 1 year, the number of decayed teeth after adjusting for confounders was likely to be greater by 0.58 and that of missing teeth by 0.27 compared to that in their counterparts with no unmet dental needs in the past 1 year. Conclusions: Perceived unmet needs for dental treatment were significantly associated with poor oral health status among the adult Korean population. Further studies are needed to clarify the direct and indirect effects of unmet needs for dental treatment on an individual’s oral health status by investigating critical variables of the causal pathways among perceived dental needs, dental care utilization, and oral health status.

충북지역 결혼이민여성의 실태와 결혼만족도

정선영(Sun Young Chung),윤혜미(Hye Mee Yoon) 충북대학교 생활과학연구소 2007 생활과학연구논총 Vol.11 No.1

This study explored the characteristics and marital satisfaction of marriage-based immigrant women with young children in Chungbuk Province. Data were collected from 150 inter-married women with questionnaires translated into English, Japanese and Chinese. Women with southeast Asian origin were 37.7%, Japanese, 34.2% and Chinese origin was 17.5%. 55.3% lived in rural area, 32.5% lived with in-laws. Most of women(79.8%) were full-time housewives, 84% were under the poverty line. Their overall marital satisfaction was above average, 22.7% of variance explained by couple cohesiveness, parenting stress and fluency of Korean language. Implications for policy making and field services were discussed.

歷史敎育에서의 一般化問題 硏究

鄭善影(Chung Sun Young) 역사교육연구회 1984 歷史敎育 Vol.35 No.-