Zirconia-Frit composites의 소결 및 물성에 미치는 MgO 첨가의 영향

권은자,이규선 대한치과기공학회 2010 대한치과기공학회지 Vol.32 No.1

Purpose : This study sought to apply different MgO additions to Zirconia (20wt % Frit) and thereby determine its mechanical properties depending upon variation of temperature, as a part of elementary study. Methods : First, in terms of sintering density depending on sintering conditions, it was found that sintering density increased as temperature varied from 1100°C to 1300°C. Results : As the addition of MgO increased, it was found that sintering density tended to decrease at each temperature. For the maximum sintering density obtained from pellet, it was found that 3wt% MgO addition specimens sintered at 1300°C had its maximum sintering density as high as 97.39%. Conclusion : This study measured mechanical properties of these specimens, and it was found that their bending strength tended to decrease as the content of MgO addition increased. And it was found that their bending strength reached up to 162 MPa when 3wt% MgO was added to them for sintering process at 1300°C. It was also found that those specimens had Vickers microhardness up to 4.6 GPa when 5wt% MgO was added to them for sintering process at 1,300℃.

치과기공사의 직무만족 요인이 이직의사에 미치는 영향 분석

권은자,최에스더,한민수,Kwon, Eun-Ja,Choi, Esther,Han, Min-Soo 대한치과기공학회 2020 대한치과기공학회지 Vol.42 No.3

Purpose: This study aimed to determine dental technicians' job satisfaction levels and to assess its influence on turnover intention. Methods: We included 230 dental technicians who work within Seoul, Incheon, Daejeon, the Gyeonggi Province, and the Chungcheongnam-do Province. We carried out a self-reported survey using a structured questionnaire. Results: As a result of assessing the research subjects' job satisfaction level, we found that there was a significant difference in working hours and a dental-work continuing plan sphere (p<0.05). Achievement & self-realization factors, the human relation factor, and growth & development factors were reported to be major job satisfaction indices. The whole average of the job satisfaction level came to 3.11, thereby appearing to be relatively high. In analyzing the research subjects' turnover intention, there was a significant difference in age, task field, dental-work career, working hours, incumbency, and dental-work continuing plan sphere (p<0.05). The question average for turnover intention was 2.88. As a result of assessing a correlation between job satisfaction and turnover intention, a significant negative (-) correlation was found between job satisfaction and turnover intention. Thus, a higher job satisfaction level was observed to lead to a lower turnover intention. Conclusion: As a result of conducting a regression analysis in order to assess the influence of job satisfaction on a turnover intention, a working condition factor, a human relation factor, and a recognition factor each appeared to have a high impact.

치과기공사의 직무스트레스 요인이 직무만족도에 미치는 영향

권은자,한민수,최에스더 대한치과기공학회 2019 대한치과기공학회지 Vol.41 No.4

Purpose: The purpose of this study was to analyze dental technicians’ job stress and Job satisfaction level and to examine its correlation. Methods: A self-administered survey was conducted from September 2 to October 2, 2019, on 230 selected dental technicians. The collected data were statistical data on frequency and percentage were obtained, and t-test, one-way ANOVA, correlation analysis and regression analysis were carried out. Results: When the job stress was analyzed, there were significant differences according to their field of work, working hours(p<.05). Their average score in the items about a job stress was 3.57. As a result of analyzing the job satisfaction of the dental technicians, there were significant differences according to their working hours, plan for task continuity in dental technician(p<.05). The average score in job satisfaction items was 3.11. Conclusion: As a result of research, that as for the correlation between a job stress and job satisfaction, a higher the job stress led to lower the job satisfaction, as every variable had a significant reverse correlation with each other. In addition, physical environment, heavy workload, conflict during the work performance, personal matters were identified as the factor that exerted the influence on both of job satisfaction.

치과기공사의 직업윤리의식이 직무만족도와 조직시민행동에 미치는 영향

권은자,최에스더,한민수,Kwon, Eun-Ja,Choi, Esther,Han, Min-Soo 대한치과기공학회 2018 대한치과기공학회지 Vol.40 No.2

Purpose: The purpose of this study was to examine the influence of dental technicians sense of work ethics on their organizational effectiveness such as job satisfaction and organizational citizenship behavior. Methods: A self-administered survey was conducted from August 25 to September 15, 2017, on 220 selected dental technicians. The collected data were analyzed by SPSS Win 19.0. Statistical data on frequency and percentage were obtained, and t-test, one-way ANOVA, correlation analysis and regression analysis were carried out. Results: When the subjects' sense of work ethics was analyzed, there were significant differences according to their field of work, position, dental technician career and monthly income(p<.05). Their average score in the items about a sense of work ethics was 3.80, which was a high score. As a result of analyzing the organizational effectiveness of the dental technicians, there were significant differences according to their field of work, position, dental technician career and monthly income(p<.05). The average score in job satisfaction items was 3.14, and that in organizational citizenship behavior items was 3.55. Conclusion : As a result of research, the above-mentioned findings of the study imply that as for the correlation between a sense of work ethics and organizational effectiveness, a better sense of work ethics led to better organizational effectiveness, as every variable had a significant positive correlation with each other. In addition, interpersonal relationships were identified as the factor that exerted the largest influence on both of job satisfaction and organizational citizenship behavior.

치과기공사의 업무스트레스에 관한 연구

권은자,김지환,Kwon, Eun-Ja,Kim, Ji-Hwan 대한치과기공학회 2002 대한치과기공학회지 Vol.23 No.2

This study was designed to grasp the degree of job stress affecting dental technicians and the degree of the symptoms of their job stress. With this in mind, the researcher selected a total of 170 dental technicians living in Seoul and Incheon, conducting a research in a period ranging from August 1,2001, to August 20, 2001. The researcher made use of a structured questionnaire whose reliability and feasibility are proved. The questionnaire is composed of a total of 55 questions: thirteen questions related to the subjects' general characteristics; 28 questions connected to the measurement of job stress and fourteen questions linked with the measurement of job-stress symptoms. The researcher analyzed the findings with the aid of SPSS(Statistical Package for Social Sciences). The research came to draw the following conclusions on the basis of frequency, percentage, T-test, and F-test, multiple regression. I. The analysis into the job stress of the subjects indicates that there is a significant difference in difficult questions among their work places, working hours, academic background, job satisfaction and jobs(P<.05). The job stress stands at 3.48 on the average, and the area of conflict among too much work and job performance turns out to be highly perceived. 2. The analysis into the degree of the symptoms of the job stress of the subjects shows that there is a significant difference in work place, working hours, job satisfaction and the continual maintenance of job(P<.05). The symptoms of job stress accounts for 2.65 on the average. Physical symptoms turn out to be highly perceived; The response 'My arms and legs are killing me' proves to stand for 3.03. 3. The correlation between job stress and the symptoms of job stress turns out to be significant(r=0.519, P<0.001), and there is a significant correlation between the average points of each job-stress area and the average points of the symptoms of job stress. All in all, it is necessary that dental technicians themselves should make positive efforts to control and relieve stress and that more efficient programs should be implemented with a view to dealing with stress.

치과기공사의 이직에 관한 연구

권은자,배상목 대한치과기공학회 2003 대한치과기공학회지 Vol.25 No.1

This study mainly intends to determine the factors for which dental technicians are satisfied withtheir jobs and how much the resulting job transfer rate is and thus to identify the correlationbetween them.For these purpose, 200 subjects were sampled out of dental technicians in Seoul and Incheon, andthe survey was performed from July 19, 2002 to August 15 (for 25 days) with self-administeredquestionnaire. Out of all collected questionnaires, 131 pieces(65.5%) were addressed for this study. As for the tools for this study, the structured questionnaire was used with its proven reliabilityand feasibility, and the contents of questionnaire consisted of 32 questions on the basis of relatedreferences. The contents of questionnaire were categorized into 3 sections: General attribute of subjects;Factors for which dental technicians are satisfied with their jobs; and their intention of job transfer.The questionnaire consisted of total 32 questions which included general attribute of subjects(10questions), factors of their satisfaction with jobs(17 questions) and intention of job transfer(5questions). The data analysis was processed by computerized system with SPSS(Statistical Package forSocial Sciences). Statistical analysis techniques included frequency, percentage, T-test, F-testanalysis and regression analysis. As a result of those analyses, the conclusion can be summarized as follows: 1. As a result of analyzing the factors for which the subjects were satisfied with their jobs, it wasfound that there were significant differences in career and job title out of question items(P<0.001).It was also shown that the factors of subjects' satisfaction averaged 3.43, which was considerablyhigher value than I expected. It was found that job and management factors were major jobsatisfaction factors. 2. As a result of analyzing the intention of subjects to decide their job transfer, it was found thatthere were significant differences in job title and marital status out of question items(P〈0.001).It was shown that the total average of the intention of their job transfer amounted to 3.06. It wasshown that dental technicians have relatively higher intention of job transfer from their currentwork place. 3. It was found that there was inverse correlation between the factors of subjects' satisfaction withtheir jobs and their intention of job transfer(r=-0.490, P〈0.05). Likewise, it was also found thatthere was inverse correlation mostly between the evaluation value for each independent variableregion in term of each factor of job satisfaction and the value for the intention of job transfer. Inview of these correlations, it was concluded that higher job satisfaction likely led to lower jobtransfer. 4. As a result of regression analysis so as to determine the influences of job satisfaction factorson the intention of job transfer, it was found that the highest influential factor was managementfactor. And it was shown that the test values of model were statistically significant and itsexplanatory power amounted to 54.6%.

치과기공사 이미지와 전공만족도가 치기공과 학생의 중도탈락의도에 미치는 영향

권은자,Chang-Hee Kim,Hyeong-Mi Kim 대한치과의료관리학회 2022 대한치과의료관리학회지 Vol.10 No.1

This study was carried out to understand the influence of dental technicians’ image and major satisfaction on dental technology students’ dropout intention. A questionnaire survey was administered to 273 students in the Department of Dental Technology. Frequency analysis, independent sample t-test, one-way ANOVA, and multiple regression analysis were performed. The results are as follows: The image of dental technicians differed significantly depending on factors such as school year, personality, whether a family member is a dental technician or not, reason for choosing a department, difficulty in one’s own academic life, and disciplinary life adaptation (p<0.05). The image of dental technicians was seen to be positively perceived when the respondent had an affirmative personality, or had a dental technician among family members or chose the department for its uniqueness, or found no difficulty in academic life, and adapted well to a situational or environmental change. Major satisfaction of dental technicians was seen a meaningful difference in items such as school year, personality, awareness of dental technicians, reason for choosing a department, the difficulty in own academic life, and the disciplinary life adaptation (p<0.05). Individuals with high major satisfaction and low dropout intention included those with a positive personality, who think affirmatively about dental technicians, who chose a department owing to suiting the aptitude and interest or to the uniqueness of the major. The influential factors on dropout intention included general satisfaction out of major satisfaction, perspective and self-confident image among dental technicians, and an awareness of dental technicians. The establishment of a desirable image of dental technicians and the improvement in major satisfaction are considered likely to contribute to reducing the dropout intention of dental technology students.

치과기공소의 작업환경이 이직의도에 미치는 영향

권은자,한민수,오선미,Kwon, Eun-Ja,Han, Min-Soo,O, Seon-Mi 대한치과기공학회 2010 대한치과기공학회지 Vol.32 No.3

Purpose: The purpose of this study was to analyze dental laboratory's working environment and turnover intention level and to examine its correlation. Methods: 180 dental technicians in Seoul, Incheon, and Chungnam area were selected. Survey was carried out from April 6, 2009 to May 20, 2009 by using self-administered questionnaire. As for the tools for this study, the structured questionnaire was used with its proven reliability and feasibility, and the contents of questionnaire consisted of 43 questions on the basis of related references. The questionnaire consisted of total 32 questions which included general attribute of subjects(14 questions), working Environment(20 questions) and turnover intention(9 questions). The data analysis was processed by computerized system with SPSS 12.0. Statistical analysis techniques included frequency, percentage, T-test, F-test analysis and regression analysis. Results: As a result of analyzing the research subjects' working environment level, there was significant difference in the item of health(P<0.05). The average in the working environment was indicated to be high with 1.53. As a result of analyzing the research subjects' turnover intention level, there was difference in the item of working hours a day(Hour), job satisfaction level, plan for task continuity, most difficulty given task(P<0.05). The average of turnover intention was indicated to be high with 2.85. Conclusion: Correlation between working environment and turnover intention, most of variables were indicated to have reverse correlation, thereby having been shown that the worse working environment leads to the more turnover intention.

치기공과 전공 선택에 관한 연구

권은자,최에스더 彗田大學 2006 論文集 Vol.24 No.-

치과기공사의 직무만족도와 삶의 질의 관련성

권은자,한민수,Kwon, Eun-Ja,Han, Min-Soo 대한치과기공학회 2012 대한치과기공학회지 Vol.34 No.3

Purpose: This study was carried out in order to examine the relationship of job satisfaction and quality of life on the dental technicians and to analyze its influence. Methods: A self-reported questionnaire survey was carried out by having convenience sampling as 220 dental technicians who work in Seoul Metropolis, Gyeonggi-do Province, Daejeon and Chungnam Province from March 12, 2012 to April 13. A research tool was used questionnaire that was proved reliability and validity. It was prepared with totally 50 questions such as 12 items for subjects' general characteristics, 18 items for job satisfaction measurement, and 20 items for life quality measurement. An analysis of the collected data was computationally processed by using SPSS Win 17.0 program. An analytical technique was made by using statistical techniques such as frequency & percentage, T-test or One-way ANOVA analysis. The following are the analytical results of the collected materials. Results: As a result of analyzing research subjects' job satisfaction level, there was significant difference(P<0.05) in items of religion, hobby life, working environment, and rest time out of daily work. The whole mean in job satisfaction was indicated to be relatively high with 3.13. However, job satisfaction with social recognition, salary, and safety was indicated lowly. As a result of analyzing research subjects' life quality level, there was significant difference(P<0.05) in items of religion, hobby life, working environment, and rest time out of daily work. The whole mean in quality of life was indicated to be relatively high with 3.10. However, the satisfaction was indicated lowly in the whole life quality and the life environment sphere. As a result of analyzing correlation between job satisfaction and life quality, all variables were indicated to be positive correlation in high significance level, thereby having been indicated that the higher job satisfaction leads to the higher life quality. Conclusion: As a result of research, the dental technicians' job satisfaction was indicated to have high correlation with quality of life. An effort is judged to be necessary for establishing fair compensation system, improving welfare policy and enhancing social recognition and position in order to promote dental technicians' quality of life.