냉간 정수압 성형법으로 제작된 지르코니아 코어의 적합도에 관한 연구

서윤정,윤귀덕,김현승,박상원,Seo, Yoon-Jeong,Yun, Kwi-Dug,Kim, Hyun-Seung,Park, Sang-Won 대한치과보철학회 2010 대한치과보철학회지 Vol.48 No.2

연구목적: 본 연구의 목적은 냉간 정수압 성형법 (cold isostatic press forming)을 이용한 새로운 지르코니아 블록의 제조와 이를 이용한 코어와 완전 도재관의 적합도를 비교 평가하여 임상적 이용 가능성을 평가 하고자 함이다. 연구 재료 및 방법:지르코니아 분말 (KZ-3YE Type A)을 단일 압축 성형하여 블록의 형태로 제작 한 후, 냉간 정수압 성형하여 블록을 제작하고, 성형이 끝난 지르코니아 블록은 $1040^{\circ}C$의 온도에서 반 소결하였다. 대조군은 상용 제품 ($Everest^{(R)}$, KAVO, Biberach/$Ri{\beta}$.)을 이용하였다. $1450{^{\circ}C}$의 온도에서 완전 소결된 실험군 블록과 대조군 블록의 수축률을 측정하고 비교하였다. CAD/CAM을 이용하여 총 21개의 코어를 제작하고 세 그룹으로 나누었다. Group I은 대조군 블록을 이용해 7개의 코어를 제작하고, Group II는 실험군 블록을 이용해 7개의 코어를 제작하였다. Group III은 실험군 블록을 이용해 7개의 코어를 제작하고 도재 ($Cerabien^{TM}$)를 축성하여 완전 도재관을 제작하였다. 제작된 코어와 완전 도재관을 모형에 합착한 후 레진으로 매몰하여 치관 장축의 협설과 근원심 방향을 따라 절단하고 지대치와 코어 사이의 변연 간격과 내부 축면 간격 그리고 내부 교합면 간격을 SEM ($S-4700^{(R)}$)을 이용해 측정하였다. 모든 측정값은 평균과 표준편차를 계산하고, one-way ANOVA test를 시행하여 실험 결과를 분석하였고, 95%유의 수준으로 검정하였다. 결과:실험군과 대조군 블록의 수축률을 측정한 결과 실험군 블록의 수축률은 19.00%였고, 대조군 블록의 수축률은 20.09%로 실험군 블록의 수축률이 더 낮은 것으로 나타났다. 적합도 측정 결과 변연 간격의 측정값에서 Group II의값($29.67{\pm}6.58 {\mu}m$)이 Group I의값($36.84 {\pm}7.18 {\mu}m$)보다 통계적으로 유의하게 작은 것으로 나타났다. 또한 Group II와 Group III의 값 사이에서는 유의한 차이가 없었다. 내부 측면 간격의 측정값에서 Group III의값($32.23{\pm}6.33 {\mu}m$)이 Group I와 Group II의내부측면간격의값($37.57{\pm}6.81{\mu}m$, $38.14{\pm}6.81{\mu}m$)보다 큰 것으로 나타났다. 각 부위의 간격 측정결과 내부 교합면 간격의 값이 변연 간격 및 내부 축면 간격의 값보다 유의하게 큰 것으로 나타났다. 결론: 현재 상용중인 대조군 블록과 비교하여 냉간 정수압 성형법으로 제조된 실험군 블록의 적합도는 유의한 차이를 보이지 않았다. 변연 적합도는 실험군에서 더 우수하였으며 도재를 축성한 완전 도재관의 적합성이 약간 더 향상되는 경향을 보였다. 변연 적합도는 대조군과 실험군 모두에서 임상적으로 허용되는 양호한 수치를 보였다. Purpose: The purpose of this study is to fabricate the new zirconia block (CNU block) and to evaluate fit of core and porcelain veneered zirconia crown. Material and methods: The experimental blocks were fabricated from the commercial ytrria-stabilized zirconia powder (KZ-3YE Type A). The powder was uniaxial pressing and the green bodies were conducted using the Cold Isostatic Pressing. The zirconia blocks were presintered at $1040^{\circ}C$ and the final sintering was performed at $1450^{\circ}C$. The Kavo Everest ZS $blank{(R)}$ (KaVo, Biberach/ $Ri{\beta}$.) was used as a control group. The linear shrinkage of CNU block and Kavo block were compared. Twenty-one cores for porcelain veneered crowns were fabricated with CAD/CAM system ($Everest{(R)}$, Biberach/ $Ri{\beta}$.). Group I; seven cores fabricated from Kavo blocks, Group II; seven cores fabricated from CNU blocks, Group III; seven cores from CNU blocks and porcelain veneering for crowns. All specimens were cemented and sectioned into two planes; diagonal and bucco-lingual. The measurement of the marginal, internal, and occlusal fit was carried out using SEM ($S-4800^{(R)}$) at $30{\times}$. The results were analyzed by one-way ANOVA test. Results: The linear shrinkage of the CNU block and the KaVo block was 19.00% and 20.09%. The marginal gap of cores ($29.67{\pm}6.58{\mu}m$) fabricated from CNU blocks showed significantly smaller than that of the cores of Kavo blocks ($36.84{\pm}7.18{\mu}m$) (P < .05). The internal gaps of the porcelain veneered crowns ($32.23{\pm}6.33{\mu}m$) were larger than those of the other two groups ($37.57{\pm}6.81{\mu}m$ and $38.14{\pm}6.81{\mu}m$). Conclusion: No statistically significant difference was found in between experimental groups and control group. The experimental groups in marginal gap showed significantly smaller than the control group.

CFA에 의해 유도된 백서(白鼠)모델 관절염(關節炎)에서 대강활탕(大羌活湯)의 진통효과(鎭痛效果)

서윤정,구성태,양윤정,김산,유인식,임규상,Seo, Yoon-Jung,Koo, Sung-Tae,Yang, Yoon-Jung,Kim, San,Yoo, In-Sik,Lim, Kyu-Sang 경락경혈학회 2004 대한침구의학회지 Vol.21 No.4

Objectives : Daeganghwal-Tang(DGHT) is one of the prescriptions used for the treatment of rheumatoid arthritis(RA) in oriental medicine. The present study aimed to examine the analgesic effect of DGHT on a rat model of CFA-induced arthritis, and the relations between DGHT-induced analgesia and endogenous nitric oxide(NO) and inducible NO synthase(iNOS)/neuronal NOS. Methods : CFA-induced arthritis model used to test the effect of DGHT was chronic pain model. After the induction of arthritis, rats subsequently showed a reduced stepping force of the affected limb for at least the next 18 days. the reduced stepping force of the limb was presumably due to a painful knee. DGHT dissolved in water was orally administrated. After the treatment, behavioral tests measuring stepping force were periodically conducted during the next 4 hours. Results : DGHT produced significant improvement of stepping force of the hindlimb affected by the arthritis lasting at least 2 hours. DGHT produced the improvement of stepping force of the affected hindlimb in a dose-dependent manner. Both NO production and nNOS/iNOS protein expression which is increased by arthritis were suppressed by DGHT administration. Conclusions : The data suggest 1) that DGHT produces a potent analgesic effect on the chronic knee arthritis pain model in the rat and 2) that DGHT-induced analgesia modulate endogenous NO through the suppression of nNOS/iNOS protein expression.

항생제 투여중 발생한 설사 환자 치험 1례

서윤정,박성운,최현정,류재환,Seo, Yoon-jeong,Park, Sung-woon,Choi, Hyun-jeong,Lew, Jae-hwan 대한한방내과학회 2017 大韓韓方內科學會誌 Vol.38 No.2

Objectives: The aim of this clinical study is to describe the case of a patient with antibiotic-associated diarrhea, which was improved by treatment with herbal medicine. Methods: The antibiotic-associated diarrhea improved following treatment with Boikyangwi-tang and Opae-san for two months. During this period, western medicine, including antibiotics, was also administered. To evaluate the effect of the treatment, the Bristol Stool Form Scale was used. Results: During the treatment, the Bristol Stool Form Scale changed from type 7 to type 5. Conclusion: The results suggest that traditional Korean medicine may be an effective treatment for antibiotic-associated diarrhea.

Erratum to: 모음 연장 발성이 보이는 연령대별 음향음성학적 특성 연구

서윤정,신지영,Seo, Yoon-Jeong,Shin, Jiyoung 한국음성학회 2019 말소리와 음성과학 Vol.11 No.1

납형의 크기와 형태가 티타늄의 주조성에 미치는 영향

서윤정,오계정,이효일,신유진,김홍주,박상원,Seo, Yoon-Jeong,Oh, Gye-Jeong,Lee, Hyo-Il,Shin, Yoo-Jin,Kim, Hong-Joo,Park, Sang-Won 대한치과보철학회 2013 대한치과보철학회지 Vol.51 No.4

연구 목적: 본 연구는 납형의 크기 및 형태 변화가 티타늄의 주조성에 어떠한 영향을 미치는지 확인하고자 하였다. 연구 재료 및 방법: 납형의 크기에 따라 Small Pattern군과 Large Pattern군으로 나누었고, 각각 Flat, Semicircular, Horse-shoe 및 V-shape형으로 납형의 형태에 따라 4개의 하위군으로 나누어 총 8개의 군으로 분류하였다. 모든 납형의 주입선은 Runner-bar형으로 하였다. 티타늄 주조 전용 매몰재인 실리카계 매몰재(Rematitan Plus$^{(R)}$, Dentarum, Germany)를 이용하여 매몰하였고, 아크용융 방식의 원심 주조기(Ti Cast Super R$^{(R)}$, Selec, Japan)를 사용하여 주조하였다. 주조성 평가는 완전한 형태로 주조 된 격자의 개수를 척도로 재현 정도를 확인하였다. 통계처리는 SPSS ver. 19.0 for WIN (SPSS. Inc. Chicago, IL, USA)를 사용하였다. 납형의 크기 및 형태에 따른 티타늄의 주조성을 이원변량 분산분석(Two-way ANOVA)을 이용하여 분석하였다. 결과:납형의 평균 재현율은 Small Pattern군은 95.14%, Large Pattern군은 94.30%로 Small Pattern군의 주조성이 유의하게 높았다(P<.05). 납형의 형태 변화에 따른 주조성은 Small Pattern군에서 Semicircular군 133.20개(96.52%), Horse-shoe군 132.40개(95.94%), Flat군 132.00개(95.65%), V-shape군 127.60개(92.46%) 순으로 감소하였다. Large Pattern군은 Flat군 198.60개(95.94%), V-shape군 197.80개(95.56%), Semicircular군 196.40개(94.88%), Horse-shoe군 188.00개(90.82%)순으로 감소하였다. Small Pattern군과 Large Pattern군 모두에서 납형의 형태변화에 따른 주조성은 유의할 만한 차이를 보이지 않았다(P>.05). 결론:주조체의 크기가 작을수록 주조성이 높아짐을 알 수 있었고 형태에 따른 주조성에서는 큰 영향을 받지 않는 것을 알 수 있었다. Purpose: The purpose of this study was to investigate the effect of geometrically different wax pattern shapes and sizes on the castability of Grade2 Cp-Ti (commercially pure titanium). Materials and methods: Total of 40 mesh wax pattern ($61mm{\times}24mm$, 207 grids), ($61mm{\times}17mm$, 138 grids) was cast in this experiment. Depending on the geometrical shape of the wax pattern, 8 groups was organized; Flat, Semicircular, Horse-shoe and V-shape, each consisting 5 samples. Runner-bar sprue was used in all patterns. The number of completely cast grid in wax pattern served as a measure for the castability of comercially pure titanium. Results: The mean value of square count in each group was as followed; 133.20 squares in group SS (96.52%), 132.40 squares in group SH (95.94%), 132.00 squares in group SF (95.65%), 127.60 squares in SV (91.43%), 198.60 squares in group LF (95.94%), 197.80 squares in group LV (95.56%), 196.40 squares in group LS (94.88%), and 188.00 squares in group LH (90.82%). Conclusion: Within the limitations of this study the results indicate that there were no sttistically significant difference in castability of titanium regarding wax pattern shape (P>.05). However, Small size wax patterns were showing the noticeable castability more than Large size pattern.

CFA에 의해 유도된 백서(白鼠)모델 관절염(關節炎)에서 대강활탕(大羌活湯)의 진통효과(鎭痛效果)

서윤정 ( Yoon Jung Seo ),구성태 ( Sung Tae Koo ),양윤정 ( Yoon Jung Yang ),김산 ( San Kim ),유인식 ( In Sik Yoo ),임규상 ( Kyu Sang Lim ) 대한경락경혈학회 2004 Korean Journal of Acupuncture Vol.21 No.4

Objectives: Daeganghwal-Tang(DGHT) is one of the prescriptions used for the treatment of rheumatoid arthritis(RA) in oriental medicine. The present study aimed to examine the analgesic effect of DGHT on a rat model of CFA-induced arthritis, and the relations between DGHT-induced analgesia and endogenous nitric oxide(NO) and inducible NO synthase(iNOS)/neuronal NOS. Methods: CFA-induced arthritis model used to test the effect of DGHT was chronic pain model. After the induction of arthritis, rats subsequently showed a reduced stepping force of the affected limb for at least the next 18 days. The reduced stepping force of the limb was presumably due to a painful knee. DGHT dissolved in water was orally administrated. After the treatment, behavioral tests measuring stepping force were periodically conducted during the next 4 hours. Results: DGHT produced significant improvement of stepping force of the hindlimb affected by the arthritis lasting at least 2 hours. DGHT produced the improvement of stepping force of the affected hindlimb in a dose-dependent mariner. Both NO production and nNOS/iNOS protein expression which is increased by arthritis were suppressed by DGHT administration. Conclusions: The data suggest 1) that DGHT produces a potent analgesic effect on the chronic knee arthritis pain model in the rat and 2) that DCHT-induced analgesia modulate endogenous NO through the suppression of nNCS/iNOS protein expression.

전통ㆍ향토음식을 활용한 푸드투어리즘 개발

서윤정(Yoon-Jung Seo),조록환(Lok-Hwan),이웅규(Woong-Kyu Lee) 한국농어촌관광학회 2011 농어촌관광연구 Vol.18 No.1

The study aims to rediscover the value of Food-tourism to using Traditional & local food. Food tourism is researched as a form which is summed up from first industry, secondary industry and third industry This study proceeded to 3 types of division. First stage, found Food-tourism theory base on theoretical basis. Second stage, draw the foundation of Food-tourism from various local tourism types. Third stage, the development of Food-tourism uses three types of view.(point, Line, Zone). For commercialization of Food-tourism, to develop competitive Traditional & local food and stratagemically use it. It is very important factor to secure competitive traditional food and stratagemically use it for reviving local economy.

A Study on the Factors Influence on the Culture Tourism Resource Interpretation based on Cultural Tourism Motivation

Seo Yun-Jeong(서윤정),Lee Sung-Gag(이성각) 대한관광경영학회 2009 觀光硏究 Vol.24 No.4

본 연구에서는 문화관광자원해설의 중요성을 파악하여 문화관광동기에 따른 자원해설의 영향관계를 알아보고자 하였다. 이러한 연구목적을 달성하기 위하여 문화관광자원해설에 대한 이론적 연구를 거쳐 실증분석을 위한 측정척도를 도출, 가설을 설정하였다. 그 결과 문환관광동기의 ‘학습/지식습득’요인은 문화관광자원해설의 ‘교육성’, ‘흥미성’, ‘이해용이성’, ‘정보성’ 요인에 높은 영향을 미치며, ‘자기계발’요인은 ‘교육성’요인을 제외한 ‘흥미성’, ‘이해용이성’, ‘정보성’요인에 높은 영향을 미치는 것으로 나타났다. ‘기분전환’요인은 ‘이해용이성’, ‘정보성’요인에 높은 영향을 미치며, 상대적으로 ‘교육성’, ‘흥미성’요인에는 영향을 미치지 않는 것으로 조사되었다. 또한 ‘가족친화/친목도모’요인은 ‘교육성’ 요인을 제외한 ‘흥미성’, ‘이해용이성’, ‘정보성’요인에 높은 영향을 미치는 것으로 나타났다. 이상과 같은 결과로 볼 때 관광객의 문화관광동기에 따라 문화관광자원해설의 내용을 교육적이고 이해하기 쉽도록 초점을 맞추어 접근한다면 보다 효과적인 영향력을 가진다는 것으로 해석할 수 있다. The aim of paper is to figure that the relation of resource interpretation along the cultural tourism motives by understanding the importance of the cultural tourism asset interpretation. To accomplish this purpose through the theoretical study on the cultural tourism motives and the cultural tourism asset interpretation were applied, the hypothesis was applied by deducting a measure for evidence analysis. As a result, the factor of learning/information acquirement in the cultural tourism motives have influence on education, interesting, understandable, and informative factors in the cultural tourism asset interpretation. I figured that the self education highly influenced on the interesting and understandable and informative factors excluding the educational factor. I understanded that the recreational factor highly influenced on the understandable and informative factors, relatively, never influenced on the educational and interesting factor. Also, I analysed that the family-friendly/promoting friendship were highly influenced in the interesting and understandable and informative factor except the educational factors. With respect to the result above, this paper comes out that focusing on making the interpretation on cultural tourism asset, accompanying with the cultural tourism motive of tourists, educational and understandable exercise its influence effectively.

해외 사례 고찰을 통한 지자체 노인요양시설 인증 체계 및 조사원 고도화 방안

서윤정 ( Seo Yun Jeong ),이순성 ( Lee Soonsung ),서동민 ( Seo Dong-min ),윤주영 ( Yoon Ju Young ),사공혜 ( Sagong Hae ),김다은 ( Kim Da Eun ) 서울대학교 간호과학연구소 2018 간호학의 지평 Vol.15 No.2

Purpose: This study aimed to suggest strategies for advancing local-government-based accreditation systems and surveyor training in long-term care facilities in Korea. Methods: A comprehensive review of the literature including research papers and official reports issued by governments from the United States, Australia, and Japan was conducted to explore domestic and international policies related to long-term care facility certification and accreditation systems. Results: The USA has two types of care quality assurance systems including mandatory certification (5-star rating system) by the Centers for Medicare and Medicaid Services and voluntary accreditation by the Joint Commission on Accreditation of Healthcare Organizations. Australia operates a government-based mandatory accreditation system for all long-term care facilities through the Australian Aged Care Quality Agency. Japan, particularly the Tokyo district, operates a third-party evaluation system that involves the voluntary participation of long-term care facilities. Conclusion: This study provides several strategies to enhance accreditation processes and surveyors’expertise. For instance, motivating facilities to voluntarily participate in accreditation is necessary by 1) providing sufficient and continuous consultations and feedback about how to improve care quality, 2) differentiating accreditation domains and indicators from the national health insurance certification system, and 3) actively utilizing accreditation results and providing incentives.

지역특화농업의 실태와 산업화 전략

서윤정(Yoon-jeong Seo),이진홍(Jin-Hong Lee),한상연(Sang-Yeun Han),박정운(Jeong-Un Park),조록환(Rok-Hwan Cho) 한국농어촌관광학회 2012 농어촌관광연구 Vol.19 No.2

This study was performed in order to derive a specific strategic direction for Schisandra chinensis Baill grown in A and B area. Through using location data from the Agriculture, Forestry, Ministry for Food, and data-growing areas of A and B index, growth rate difference analysis was performed. The results of this study are as follows: 1) The industry of the Schisandra chinensis Baill relatively more arable land increased. Industry density also increases. 2) There is a qualitative difference between the two areas on the quality of the local growth. In the medium to longer term, the omiza of the two areas is predicted to grow in the growing local products(B) and a competitive local products(A). The result might be used when the region’s agricultural policy set maintenance for approach in the area and the market.