DLP방식의 치과용 3D프린팅 임시치아 소재의 기계적 특성

정효경 ( Hyo-kyung Jung ),이승희 ( Seung-hee Lee ),정효경 ( Hyo-kyung Jung ) 한국산업융합학회 2021 한국산업융합학회 논문집 Vol.24 No.3

Tested the flexural strength and maximum load of two types of dental 3D printed temporary tooth materials of the DLP method. The average flexural strength was 206.98 MPa in the test group and 139.77 MPa in the control group. The average flexural strength of the experimental group was 67.21 MPa higher than that of the control group. In the maximum load experiment, an average of 44.16N in the experimental group and 37.31N in the control group were measured. The average value of 6.85N was higher in the experimental group, and the durability of the artificial tooth restoration was improved.

연교(連翹)와 금은화(金銀花) 에탄올 추출물의 항염증 효능 연구

류효경,정민재,최유진,양승정,조성희,Ryu, Hyo-Kyung,Jung, Min-Jae,Choi, Yu-Jin,Yang, Seung-Jeong,Cho, Seong-Hee 대한한방부인과학회 2020 大韓韓方婦人科學會誌 Vol.33 No.3

Objectives: The purpose of this study was to investigate the anti-inflammatory effects of ethanol extracts from Forsythia viridissima Lindley's fructus and Lonicera japonica Thunberg's flos in vitro, which has been frequently used in inflammatory diseases. Methods: In this experiment, the anti-inflammatory effects of ethanol extracts from Forsythia viridissima Lindley's fructus and Lonicera japonica Thunberg's flos were evaluated by checking the following substances of LPS-activated Raw264.7 cell: Prostaglandin E₂ (PGE₂), Nitric oxide (NO), Cyclooxygenase-2 (COX-2), inducible Nitric oxide synthase (iNOS), Interlukine-1β (IL-1β), Interlukine-6 (IL-6), Tumor necrosis factor-α (TNF-α), mitogen-activated protein kinase (MAPK), Inhibitor of kappa B-α (IκBα), Nuclear factor kappa B (NF-κB). And additionally measured reactive oxygen species (ROS) and free radicals to check the antioxidant effect of ethanol extracts from Forsythia viridissima Lindley's fructus and Lonicera japonica Thunberg's flos which affect inflammatory responses. Results: As a result of measuring anti-inflammatory efficacy, PGE2, NO, IL-1β, IL-6, TNF-α production amounts were reduced in the ethanol extracts from Forsythia viridissima Lindley's fructus and Lonicera japonica Thunberg's flos groups compared with the control group, and decreased the amount of COX-2 mRNA, iNOS mRNA gene expression. Expression of MAPK (ERK, JNK, p38) pathway was decreased. Expression of IκBα was increased and NF-κB was decreased. It is demonstrated that ethanol extracts from Forsythia viridissima Lindley's fructus and Lonicera japonica Thunberg's flos, by reducing NF-κB, regulate the expression of the inflammatory genes and reduce the inflammatory mediators. Ethanol extracts from Forsythia viridissima Lindley's fructus and Lonicera japonica Thunberg's flos also decreased ROS production and free radicals, which shown to have antioxidant efficacy and influence anti-inflammatory effects. Conclusions: These data suggest that ethanol extracts from Forsythia viridissima Lindley's fructus and Lonicera japonica Thunberg's flos can be used to treat various inflammatory diseases.

치기공사의 임파워먼트 수준

정효경 ( Hyo Kyung Jung ),장기환 ( Ki Whan Chang ),박남규 ( Nam Gyu Park ) 한국위생과학회 2009 한국위생과학회지 Vol.15 No.2

보건소 금연클리닉 6개월 금연성공자의 재흡연과 관련요인

손효경,정운영,박기수,감신,박선균,이원기,Son, Hyo-Kyung,Jung, Un-Young,Park, Ki-Soo,Kam, Sin,Park, Sun-Kyun,Lee, Won-Kee 대한예방의학회 2009 예방의학회지 Vol.42 No.1

Objectives : This study was conducted to examine the factors implicated when people start smoking again after a 6 month cessation, and was carried out at the smoking cessation clinic of a public health center. Methods : The study subjects were 191 males who had attended the smoking cessation clinic of a public health center for 6 months in an attempt to quit smoking. Data was collected, by phone interview, regarding individual smoking habits, if any, over the 6 month study period. The factors which may have caused an individual to smoke again were examined. This study employed a health belief model as it theoretical basis. Results : Following a 6 month cessation, 24.1% of the study group began to smoke again during the 6 month test period. In a simple analysis, the factors related to individuals relapsing and smoking again included barriers of stress reduction, body weight gain and induction of smoking by surroundings among perceived barriers factor of our health belief model(p<0.05). In multiple logistic regression analysis for relapsed smoking, significant factors included barriers of stress reduction and induction of smoking by surroundings(p<0.05). The most important reason of for an individual to relapse into smoking was stress(60.9%) and the most likely place for a relapse to occur was a drinking establishment(39.1%). Conclusions : Our results indicate that both regular consultations and a follow-up management program are important considerations in a public health center program geared towards maintaining smoking cessation.

구강보건 보조 인력의 자기 효능감과 직무만족도의 관계연구

정효경 ( Hyo Kyung Jung ),김선칠 ( Seon Chil Kim ) 대한예방치과·구강보건학회 2010 大韓口腔保健學會誌 Vol.34 No.4

Objectives. The purpose of this study was to determine the effect of Job Satisfaction on Self-Efficacy of dental technicians and dental hygienists. We examined self-efficacy and job satisfaction of dental technicians and dental hygienists to determine methods for raising job satisfaction. Methods. Subjects included dental technicians and dental hygienist in the metropolitan areas of the cities of Daegu and Gyeong-buk. Surveys were filled out by consenting dental technicians and dental hygienists. Statistical analysis was done using the Statistical Package for Social Sciences (SPSS) version 17.0 for Windows. We determined frequencies and percentage, calculating means, and standard deviations, and determining statistical significance using t-tests, analysis of variance, Pearson`s correlation coefficient, and multiple regression analysis. Results. Dental hygienists reported higher self-efficacy and job satisfaction than dental technicians. Dental technicians showed differences in self-efficacy associated with age, marital status, education, career, and monthly salary. Dental hygienists showed differences in self-efficacy associated with gender, age, education, career, and monthly salary. Differences in job satisfaction was also associated with general characteristics of the study population. Dental technicians showed job satisfaction levels associated with age, marital status, education, career, work hours, and monthly salary. Dental hygienists showed job satisfaction levels associated with age, marital status, education, career, work hours, and monthly salary. Conclusions. Self-efficacy and job satisfaction are high among dental technicians and hygienists. The degree of job satisfaction is high because of a high sense of self-efficacy.

소면적 재배 작물 미나리와 쪽파 중 dimethomorph와 fludioxonil의 잔류특성

박효경(Hyo Kyoung Park),노현호(Hyun Ho Noh),이재윤(Jae Yun Lee),정혜림(Hye Rim Jeong),이정우(Jung Woo Lee),조승현(Seung Hyeon Jo),경기성(Kee sung Kyung) 한국농약과학회 2018 농약과학회지 Vol.22 No.3

치과보철 치료의 기능적 만족도에 영향을 미치는 요인 -대구,경북지역 중심으로-

정효경 ( Hyo Kyung Jung ),김한곤 ( Han Gon Kim ) 대한예방치과·구강보건학회 2011 大韓口腔保健學會誌 Vol.35 No.1

Objectives. The main purposes of this study were to describe dental patients` dental prostheses and the treatment required to install those prostheses and to explore factors that affect patient satisfaction. Methods. This study was done in the Deagu and Gyungbook areas of Korea. It was based on a survey of dental patients that was conducted between July 1st, 2006 and August 31st, 2006. Originally, 700 questionnaires were distributed and 640 were collected. UItimately, 626 questionnaires were used for the statistical analysis. Descriptive and inferential statistics, such as frequencies and multiple regression analysis, were introduced. In the multiple regression analysis, twenty two independent variables were employed to explore factors that had an impact on satisfaction. Results. The results of this study are were as follows: In the multiple regression analysis, patients` interest in dental personnel (β=0.179), their remaining teeth (β=0.109), the condition of their health(β=0.148), and their expectations for dental prosthesis installation (β=0.195) had statistically significant positive relationships with satisfaction with treatment for dental prostheses. No other independent variable had a significant impact on satisfaction. Conclusions. Some suggestions for future studies and policy implications to improve the satisfaction of dental patients with installation of dental prostheses are introduced and discussed.

맥문동 중 Dimethoate와 Pyraclostrobin의 잔류 특성

박효경 ( Hyo Kyoung Park ),노현호 ( Hyun Ho Noh ),이재윤 ( Jae Yun Lee ),정혜림 ( Hye Rim Jeong ),이정우 ( Jung Woo Lee ),진미지 ( Me Jee Jin ),최황 ( Hwang Choi ),홍수명 ( Su Myeong Hong ),경기성 ( Kee Sung Kyung ) 한국환경농학회 2016 한국환경농학회 학술대회집 Vol.2016 No.-

소면적 재배 작물인 맥문동 중 dimethoate(46% EC)와 pyraclostrobin(11% SC)의 잔류특성을 구명하기 위하여 충남 청양에 위치한 맥문동 포장에서 시험을 수행하였다. Dimethoate는 1,000배 희석하여 수확 50일전부터 10일 간격으로 20일전까지 토양 관주 처리하였으며(50-40, 40-30, 30-20), pyraclostrobin 의 경우 수확 50일전부터 7일전까지(50-40-30, 40-30-21, 30-21-14, 21-14-7) 4,000배 희석액을 경엽살포하였다. 시료는 수확 예정일에 일시 수확하였으며, 채취한 시료는 고압 분무기로 세척하고 60℃ 순환식 열풍 건조기에서 48시간 건조하여 건조 맥문동을 조제한 후 잔류농약을 분석하였다. 또한 수확 예정일에 인접하여 살포한 처리구(dimethoate:30-20, pyraclostrobin:21-14-7)의 경우 건조 전 맥문동도 잔류농약을 분석한 후 건조 전과 후의 잔류량 비를 이용하여 가공계수를 산출하였다. 맥문동 중 dimethoate 의 회수율은 85.8-94.1%이었으며, pyraclostrobin과 대사체(BF 500-3)의 회수율은 각각 86.5-118.1과 90.4-117.1%이었다. 건조 맥문동 중 dimethoate의 잔류량은 50-40 처리구에서 검출한계인 0.004 mg/kg 이하이었고 40-30과 30-20 처리구에서 각각 0.012-0.013과 0.025-0.026 mg/kg이었다. 토양 관주처리한 침투성 pyraclostrobin은 뿌리에서 검출되었으며, 수확일에 인접하여 살포할수록 잔류량은 증가하였다. 또한, 최종 약제살포 처리구에서 수확한 시료의 가공계수는 0.104-0.107로 열풍 건조 과정을 거치면서 잔류량은 감소하였다. 이는 열을 가하면 분해되는 dimethoate의 이화학적 특성 때문인 것으로 판단되었다. 건조 전 맥문동 중 pyraclostrobin과 대사체의 잔류량은 각각0.006-0.007 mg/kg이었으나 건조 맥문동 중 잔류량은 모든 처리구에서 검출한계인 0.001과 0.0002 mg/kg 미만이었다. 잎에 살포될 경우 국부 침투성을 가지는 pyraclostrobin은 경엽 살포한 농약이 지하부 뿌리에서 일부 검출되었으며, 가공계수는 0.14-0.16으로 열풍 건조 과정을 거치면서 잔류량은 감소하였다. 이는 비교적 낮은 녹는점 (63.7-65.2℃)과 습한 조건에서 반감기가 짧은 농약의 특성 때문인 것으로 판단되었다.

대학생들의 식습관과 구강상태에 관한 연구

정효경 ( Hyo Kyung Jung ),박남규 ( Nam Gyu Park ),김덕희 ( Duck Hee Kim ) 한국위생과학회 2007 한국위생과학회지 Vol.13 No.2

치과기공사에 대한 인식정도와 이미지 조사 - 대구지역을 중심으로 -

정효경,김정숙,이승희,Jung, Hyo-Kyung,Kim, Jeong-Sook,Lee, Seung-Hee 대한치과기공학회 2010 대한치과기공학회지 Vol.32 No.2

Purpose : The purpose of study was 500 people who are not related to dentistry in order to survey image about dental technicians. Methods : The subjects were composed of 500 people who are not related in Daegu Metropolitan city. This study was done using the Statistical Package for Social Sciences 17.0 for Windows. As for the analysis methods, the study used the frequency analysis, percentage, mean, t-test, analysis of variance. Results : The score on the image of dental technicians declined in the order of occupational image(2.98), work image(3.14), personal image(3.26), social image(2.87). 'It is hard and stressful' in the occupational image had the highest score with 3.69, 'Dentist and companionship are strong' in the occupational image had the lowest score with 2.21. 'It need expert knowledge and a skilled technology' in the work image had the highest score with 3.69, 'Health medical treatment side of health technique is occupation.' in the work image had the lowest score with 3.69. 'It always work busily' in the personal image had the highest score with 3.69, 'It is value and is effect work.' in the personal image had the lowest score with 3.69. 'An employment is easy after license acquisition.' in the social image had the highest score with 3.69, 'It admit independence' in the social image had the lowest score with 3.69. Conclusion : Dental technition research in order to image improvement and recognition, as the medical professional must construct the desirable dental technition image and recognition.