의료시장 개방에 따른 국내병원 대응에 대한 치위생과 학생들의 견해에 관한 연구

윤현서 ( Hyun Seo Yoon ),김동열 ( Dong Yeol Kim ) 한국치위생과학회 2009 치위생과학회지 Vol.9 No.4

해조류를 이용한 치아(우치)미백효과

윤현서(Yoon HyunSeo) 한국구강보건과학회 2019 한국구강보건과학회지 Vol.7 No.2

Objective: The purpose of this study was to verify the whitening effect of algae by using the rainy season as a preclinical step to develop functional whitening detergent using algae. Method: The algae were stained for 7 days using algae, and the sample was treated over 14 days for 24 hours. The tooth color was measured using VITA Easyshade V. Results: The color changes depending on the type of beverage, coffee, green tea, or grape juice were highest for coffee. As shown, leaf Kosiregi and green gold continued to brighten on the 14th day. The amount of color change was most effective in the green seaweed regardless of its concentration, and in the order of starfish, leaf stalk, and spine. The higher the concentration of the sample, the better the whitening effect. The higher the concentration of turnips, the higher the color change was, at 100 for foliar and green laver at 250. Conclusion: Therefore, as a result of this study, there was a difference in the concentration and application time of the four kinds of seaweeds, but all showed a tooth whitening effect.

이종망간 핸드오버를 위한 적응적 핸드오버 결정 기법

윤현서(Hyun-Seo Yoon),박순준(Soon J. Park),강충구(Chung G. Kang) 한국통신학회 2009 한국통신학회 학술대회논문집 Vol.2009 No.6

해조류를 함유하는 천연세치제의 치아미백효과 임상시험 연구

윤현서(Hyun-Seo Yoon),박충무(Chung-Mu Park) 한국구강보건과학회 2020 한국구강보건과학회지 Vol.8 No.3

Objectives: To verify the tooth whitening effect of toothpaste containing seaweed and establish a basis for the development of functional toothpaste that whitens teeth using natural extracts. Methods: Clinical trials were conducted with the participation of 70 volunteers. There was a negative control group (general toothpaste), positive control group (commercially available whitening toothpaste), and test groups A and B. They were examined before and 6 weeks and 12 weeks after their use of VITA Easyshade V for transposition to assess their tooth color and BB Checke to assess them for halitosis. Moreover, with the use of Dentobuff strips, their pH and stimulated saliva were measured; each measurement was conducted three times, and the average value was recorded. Results: The findings verified that the tooth whitening effect of the toothpaste containing algae was similar to, if not slightly better than, that of a commercially available whitening toothpaste. In addition, the toothpaste containing seaweed reduced all halitosis, and saliva outflow became more effective as the seaweed content concentration increased. Conclusions: The effects of natural extracts on tooth whitening have been gradually demonstrated, but when used in products such as toothpaste, the effects are unlikely to appear immediately; it takes about 6 months for the effects to show. Therefore, clinical trials should be advanced, and the number of representatives should be increased. Nevertheless, the demand for tooth whitening is increasing, and it is sensible to whiten teeth using natural extracts to form a basis for developing functional toothpaste that will alleviate bad breath.

일부지역 대학생의 치과 의료기관 선택요인에 관한 연구

윤현서(Hyun-Seo Yoon),강현영(Hyun-Young Kang),홍인경(In-Kyoung Hong),김혜진(Hye-Jin Kim),이민경(Min-Kyung Lee),이정화(Jung-Hwa Lee),진혜정(Hye-Jung Jin) 한국구강보건과학회 2014 한국구강보건과학회지 Vol.2 No.1

The purpose of this study was to examine the selection factors of college students in the region of Busan for dental institution. A survey was conducted by visiting the selected students in September, 2013, and an online survey was additionally conducted. The answer sheets from 300 respondents were analyzed. They relied on their past experience(3.85) in terms of information search, and they took considerations on how long it took to get to the dental institution(3.97) in terms of traffic convenience. As for physical environments, they gave priority to cleanness(4.66). Concerning the image of dental institution, they took reputation into account(4.25). In terms of external qualifications, they placed importance on the academic credential of dentist(3.22). As to dental service for the selection of dental institution, they gave weight to dentist ability(seven). In regard to basic elements, they took considerations on treatment cost(4.12), and they especially placed the most importance on dentist ability. The male and female students gave 4.32 and 4.48 respectively to dental service for the selection of dental institution, and the gender difference was significant. Among the selection factors of dental institution, there was a weak positive correlation between traffic convenience and physical environments, between physical environments and the image of dental institution and between dental service and basic elements. Therefore various efforts should be made to offer quality medical service by keeping track of what s considered in choosing a dental institution.

Anti-inflammatory activity of various seaweeds in LPS-PG stimulated HGF-1 cells

윤현서(Hyun-Seo Yoon),김혜진(Hye Jin Kim),박충무(Chung-Mu Park) 한국구강보건과학회 2020 한국구강보건과학회지 Vol.8 No.4

Objectives: Many seaweeds are considered important natural resources since their abundant bioactive compounds. The present study tried to analyze the anti-inflammatory activity of several seaweeds in the human gingival fibroblast (HGF)-1 cells. Methods: Lipopolysaccharide from Porphyromonas gingivalis (LPS-PG), one of the main causes in the progression of periodontal inflammation, was applied to induce inflammatory response in HGF-1 cells. Nitric oxide (NO) was used as one of the hallmarks for inflammation, which was analyzed by the Griess reaction. The protein expression level of inducible NO synthase (iNOS) was identified by the Western blot analysis. Results: Inhibitory effect of NO production was investigated in the ethanol extracts of Asparagopsis taxiformis Trevisan de Saint-Léon (ATEE), Distromium decumbens (Okamura) Levring (DDEE), Galaxaura fastigiata (GFEE), Hypnea japonica Tanaka (HJEE), Myelophycus simplex (Harvey) Papenfuss (MSEE), and Scytosiphon canaliculatus (Setchell & N.L. Gardner) Kogame (SCEE) in LPS-PG stimulated HGF-1 cells. As a result, ATEE and HJEE the most potently inhibited while GFEE and SCEE slightly ameliorated NO production without any cytotoxicity. But, DDEE and MSEE did not exhibit the extraordinary NO inhibitory effect in LPS-PG induced HGF-1 cells. Western blot analysis was also conducted to identify the inhibitory effect of both extracts, ATEE and HJEE that sharply attenuated NO production, in LPS-PG induced HGF-1 cells. ATEE and HJEE mitigated iNOS expression in a dose dependent manner, which was in accordance with the result of NO production. Conclusions: ATEE and HJEE in the algal extracts used in this study drastically reduced the LPS-PG-induced inflammatory response in HGF-1 cells. All of this ATEE and HJEE will be used as candidate substances for treatment and prevention of periodontal disease.

Porphyromonas gingivalis에 대한 레몬그라스 오일 및 레몬그라스 에탄올 추출물의 항균 활성

윤현서(Hyun-Seo Yoon),박충무(Chung-Mu Park) 한국구강보건과학회 2023 한국구강보건과학회지 Vol.11 No.1

Objectives: This study analyzed the antibacterial effects of LGEE and LGEO against P. gingivalis, thus the potential utility was evaluated as the functional materials for oral healthcare. Methods: Nitric oxide (NO) assay and cytotoxicity were analyzed by the Griess reaction and WST-1 assay, respectively. Antibacterial activity against P. gingivalis was evaluated by disk diffusion method and proliferation inhibition assay. Results: LGEO and LGEE significantly inhibited NO production as well as the proliferation of P. gingivalis in a dose dependent manner. Conclusions: LGEO and LGEE inhibited potently NO production and P. gingivalis proliferation, which means they could be used as a numerous lines of functional materials for improving oral health.

지역사회 주민들의 주관적 건강인식과 행복지수의 관련성(2014년도 지역사회 건강조사 경남지역 자료이용)

윤현서 ( Hyun Seo Yoon ),전진호 ( Jin-ho Chun ),채유정 ( You Jung Chae ) 대한예방치과·구강보건학회 2017 大韓口腔保健學會誌 Vol.41 No.3

Objectives: Health is closely related to an individual`s assessment of their quality of life and their subjective level of happiness. The aim of this study was to investigate the association between happiness index and self-rated health by utilizing a community health survey in Korea. Methods: The study participants were 17,937 people living in Gyeongsangnam-do, Korea, who completed a community health survey in 2014. The non-subjective variables included in the statistical analysis were sex, age, region, education, income, and economic activity. The subjective awareness variables included self-rated health, self-rated oral health, chewing difficulty, pronunciation difficulty, and happiness index. Statistical analysis of the data was done using the SPSS 21.0 program. Results: Evaluation of the subjective awareness levels revealed that the respondents that were better educated, whose income levels were higher, and those who engaged in an economic activity found themselves to be in better physical health and oral health. In contrast, the respondents that were female, older, and with residence in the counties reported a higher incidence of chewing difficulty. There was a positive correlation between happiness index and subjective awareness level, and a negative correlation between chewing difficulty and pronunciation difficulty. Happiness index was influenced the most by subjective health levels, followed by income, age, pronunciation difficulty, subjective oral health, chewing difficulty, academic credential, region, and sex. Conclusions: Therefore, in order to improve the happiness index of community residents, regular health checkups and systematic oral health education should be prepared in order to improve awareness of subjective health and reduce discomfort in the oral cavity, and efforts should be made to reduce the gap between regions.

중성화 실험을 통한 실물크기 철근 콘크리트 구조물의 화재 손상도 분석

윤현아(Yoon, Hyun Ah),강지연(Kang, Ji Yeon),민해원(Min, Hae Won),김희선(Kim, Hee Sun),신영수(Shin, Yeong Soo) 한국콘크리트학회 2015 한국콘크리트학회 학술대회 논문집 Vol.2015 No.10

산업장 근로자들의 구강건강 행위에 따른 행복지수

윤현서(Hyun-Seo Yoon) 한국콘텐츠학회 2013 한국콘텐츠학회논문지 Vol.13 No.11

본 연구는 경북지역 294명의 근로자들을 대상으로 행복지수에 구강건강 행위와, 주관적 구강건강인식의 영향을 파악하여 이를 바탕으로 산업장 근로자들을 위한 구강보건계획을 수립하는 기초자료로 활용하고자 하였다. 구강건강 행위에 따른 행복지수를 살펴보면 1년 내 정기검진여부에서는 정기검진을 받는 경우 단일문항 행복지수(p=0.002), 5문항 행복지수(0.012)에서 모두 높게 나타났고, 1년 내 스켈링을 받은 경우 단일문항 행복지수(p<0.001), 5문항 행복지수(p=0.003)모두 높게 나타났다. 칫솔질 횟수에서는 칫솔질 횟수가 많은 경우 단일문항 행복지수(p<0.001), 5문항 행복지수(p=0.023)으로 높았으며, 구강보건교육을 받은 경험이 있는 경우 단일문항 행복지수(p=0.041), 5문항 행복지수 모두에서 높게 나타났다. 근무지에 칫솔을 보관하는 경우에는 단일문항 행복지수(p=0.001), 5문항 행복지수(p<0.001) 모두에서 높게 나타났으며, 아플 때 즉시 치과방문이 가능한 경우 단일문항 행복지수(p<0.001), 5문항 행복지수(p<0.001)모두에서 높게 나타났다. 이상의 결과에서 산업장 근로자들의 행복지수를 높이기 위한 체계적인 구강건강프로그램이 마련되어야할 것이다. The purpose of this study was to examine the impact of the oral health behavior and self-rated oral health of workers on their happiness indexes in an attempt to provide information on oral health planning geared toward industrial workers. The subjects in this study were 294 workers in North Gyeongsang Province. As a result of analyzing the relationship between their health behavior and happiness indexes, the workers who got regular health checkups had higher happiness indexes for both single items(p=0.002) and entire five items(0.012), and those who had their teeth cleaned over the past year had higher happiness indexes for both single items(p<0.001) and entire five items(p=0.003). As for a toothbrushing frequency, the respondents who brushed their teeth more frequently had higher happiness indexes for both single items(p<0.001) and entire five items(p=0.023), and those who had ever received oral health education had higher happiness indexes for both single items(p=0.041) and entire five items. The workers who kept their toothbrushes at work had higher happiness indexes for both single items(p=0.001) and entire five items, and the respondents who could afford to visit a dental clinic immediately in case of having a toothache had higher happiness indexes for both single items(p<0.001) and entire five items(p<0.001). The findings of the study suggest that the preparation of systematic oral health programs is required to boost the happiness indexes of industrial workers.