• Journal of Technologic Dentistry
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• v.42 no.3
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• pp.202-207
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• 2020

Purpose: This study is a comparative analysis of the strain according to deposition in a constant temperature water bath after manufacturing ultraviolet (UV)-cured artificial teeth. Methods: As a control group, 10 ready-made artificial teeth were selected as the first molar on the right side of the maxilla (RT group). Silicone was used as a duplicate of the artificial denture teeth. Experimental teeth were prepared in two groups using the prepared silicone mold. In the first experimental group, the UV-cured resin was injected into the negative silicone, followed by irradiation with a UV-curing machine for 5 minutes (5M group). In the second experimental group, the UV-cured resin was injected into the negative silicone, and then irradiated for 30 minutes using a UV-curing machine (30M group). The one-way ANOVA was performed, and post-test was analyzed by Tukey. Results: When immersed in a water bath for 15 days, it was found to be -0.3% in the RT group, -0.6% in the 5M group, and -0.7% in the 30M group. The results revealed -0.2% in the RT group, 0.2% in the 5M group, and -0.2% in the 30M group when they were in the bath for 30 days. Conclusion: In the water bath, the swelling was greater when deposited for 1 to 15 days, but was less when deposited for 15 to 30 days.

• Journal of The Korean Association For Science Education
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• v.34 no.8
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• pp.787-794
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• 2014

The purpose of this study was to examine the science writing and perception of students who experienced the argument-based claim and evidence writing approach. One hundred and eight grade 11 students were assigned to an experimental group, while 99 grade 12 students were assigned to a comparative group in their earth science classes. Students' science writings on two science topics were scored using an analytic rubric developed in this study. The comparison of experimental and comparative groups in science writing was carried out using an independent two samples t-test. Students' perception on the instruction was examined using an open-ended survey. Science writing by the experimental group scored significantly higher than that by the comparative group, except for the big idea of 'green energy'. For six concepts in 'green energy' and four concepts in 'plate tectonics, there were more students in the experimental group than the comparative group who indicated them in their science writing. Students' perception on the instruction was positive in that they mentioned planning and conducting inquiry, citing of claims and evidence, and developing inquiry questions were helpful in science learning. The results of this study imply that the argument-based claim and evidence writing approach should be implemented in science classrooms for students to develop a conceptual framework for science.

• Proceedings of the KACD Conference
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• 2001.11a
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• pp.592.2-592
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• 2001

The purpose of this study was to evaluate the efficiency of the four obturation techniques. In this study, eighty teeth were instrumented and randomly divided into 4 groups of 20 teeth each, according to the obturation techniques Group A was used with Microseal. in Group B, Thermafil. in Group C, continuous wave techniques, in Group D cold lateral condensation methods were used. After obturation, the teeth were taken a digital radiograph in mesiodistal and buccolingual directions to study the quality of the obturation.(omitted)

• Clinics in Shoulder and Elbow
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• v.18 no.4
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• pp.221-228
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• 2015

Background: The The purpose of this study was to make a comparative analysis of the clinical outcomes after the operative treatment of refractory medial epicondylitis between the suture anchor group and the non-suture anchor group. Methods: We enrolled 20 patients (7 men and 13 women) with recalcitrant medial epicondylitis who were able to receive operative treatment in a minimum of an 18-month follow-up. The mean age was 48.6 years (range, 36-59 years). The patients were allocated into either the suture anchor group (7 patients) or the non-suture anchor group (13 patients). We evaluated clinical outcomes using the visual analog scale (VAS), the pain grading system of Nirschl and Pettrone, and postoperative grip strength. Results: The VAS score decreased from 8.8 to 2.0 for the suture anchor group and from 8.6 to 1.3 for the non-suture anchor group (p=0.16). The postoperative grip strength was 95%, 93% of the non-treated arm in both groups (p=0.32). The postoperative satisfaction level was good in 5 patients and fair in 2 for the suture anchor group and excellent in 5 patients, good, in 4, and fair, in 4 for the non-suture anchor group (p=0.43). The clinical outcomes did not show a statistically significant difference between the two groups. Conclusions: We found that patients with recalcitrant medial epicondylitis were treated reliably with satisfactory clinical outcomes whether or not suture anchors were used. We believe the use of suture anchors when more than 50% of the tendon origin is affected provides an effective and favorable treatment modality.

• Journal of Society of Preventive Korean Medicine
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• v.13 no.3
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• pp.101-112
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• 2009

Objectives : This comparative study aimed to identify the effect of the Buddeumi(cupping-and-moxibustion device) therapy and moxibustion-only therapy on treating constipation of stroke patients who were admitted in the hospital of oriental medicine. The research design was a nonequivalent control group pretest-posttest design. Methods : The subjects of the study consisted of 23 stroke patients, and they were divided into two groups : one was the experimental group of 11 patients and the other was the control group of 12 patients. The Buddeumi therapy and the moxibustion-only therapy were given respectively. Each Buddeumi and moxibustion-only therapies on the 天樞(ST25, right & left) in abdomen were administered to the each group for 40 minutes a total at 10 times. The posttest included the frequency of defecation with the Constipation Assessment Scale every day for one week after the experiment. The data were analyzed by the $x^2$ test, t-test, Fisher exact test, and repeated measures ANCOVA using SPSS/WIN 12.0 program. Results : The results were as follows : First, Hypothesis 1 : 'The patients who are given the Buddeumi therapy in the experimental group have a lower Constipation Assessment Scale than the control group.' was supported(F=4.367, P=0.049). Second, Hypothesis 2 : 'The patients who are given meridian acupressure in the experimental group have a higher frequency of defecation per week than the control group.' was supported(F=0.947, P=0.034). Accordingly, 'The patients who are given the Buddeumi therapy in experimental group have a higher effect on constipation than the control group.' was supported. Conclusion : The Buddeumi therapy reduced the constipation assessment scale of stroke patients and increased the frequency of their defacation per week. Therefore, the Buddeumi therapy could be an effective treatment for constipation of stroke patients.

• Journal of Korean Physical Therapy Science
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• v.9 no.1
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• pp.61-68
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• 2002

The purpose of this dissertation was to analyze the effect of trunk extension strengthening exercise on muscle performance of the upper limb in adolescent baseball player. The twenty people were studied : experimental group(10), comparative group(10). The experimental group has done trunk extension strengthening exercise for 8 weeks. The study analyzes isometric maximal strength of shoulder internal rotation. shoulder external rotation, elbow flexion, elbow extension, forearm pronation, forearm supination and ball speed. All of subjects were tested for 3 times ; pre, mid, post. The results were as follows; 1. Maximal isometric strength of upper limb, during trunk extension strengthening exercise in experimental group, shoulder internal rotation and external rotation showed it has slightly increased and comparative group showed it has no change, but not significant elbow flexion and extension significantly(p<0.05) increased after exercise either for 4 or 8 weeks compared with that of control group. Forearm pronation showed not significantly changed in both group, but significantly different between group either for 4 or 8 weeks. Forearm supination, significantly((p<0.05) increased after 8 weeks in experimental group. 2. Ball speed showed slightly increased but not significantly in experimental group. These results it may expect improvement of upper limb muscle performance of upper limb in adolescent baseball player. However, in case of shoulder a point of view of bunk extension strengthening exercise of this study hasn't a significant influence. More experimental studies are needs, hereafter which will use more experimental subjects and various methods of exercise and new application of treatment term to define significant change.

• Korean Journal of Community Nutrition
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• v.12 no.3
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• pp.284-298
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• 2007

This study was performed by a comparative analysis of nutritional knowledge, dietary attitudes and nutrient intakes of dietitians and non-dietitians. The subjects of this study were 103 dietitians and 166 non-dietitians working in the Chonnam area. The general characteristics, nutrition knowledge and dietary attitudes of the subjects were surveyed using a self-administered questionnaire, and nutrient intakes were examined using 24-hour recall method. The results were as follows: Dietitian group ($15.17{\pm}3.88$) scored significantly (p<0.0001) higher than non-dietitian group ($13.34{\pm}3.31$) in nutrition knowledge. Dietitian group ($69.58{\pm}10.67$) scored significantly higher on dietary attitudes than the non-dietitian group ($63.97{\pm}11.18$). The correlation between nutritional knowledge scores and dietary attitudes scores were statistically significance on job, age ($20{\sim}39$), education level (below university), marital status and work experience ($2{\sim}5$, above 10). The dietitian group was significantly higher than the non-dietitians in body weight and BMI of anthropometric data. The prevalence of obesity was 5.8% from the dietitian group and 6.6% from the non-dietitian group when judged by BMI and therefore obesity rate was significaltly (p<0.001) different between the two groups. In case of the dietitian group, the average intake of vitamin A, vitamin $B_1$, vitamin $B_6$, niacin, vitamin E, phosphorous, zinc were above the Korean RDA whereas the average intake of vitamin C, calcium, iron, folic acid were below the Korean RDA. The average intake of most nutrients, except vitamin $B_1$, vitamin $B_6$, phosphorus, were below the Korean RDA in the non-dietitian group. Therefore the non-dietitian group needs nutrition education in order to improve their nutritional status.

• Journal of Families and Better Life
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• v.25 no.4
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• pp.57-66
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• 2007

This study purposed to examine the effects of integrated activities based on wordless picture books on increase in children's creativity. As for the subject of this study, 20 five-year old children(9 boys and 11 girls), who go to D Kindergarten in Ulsan-si, were selected as a experimental group and 20 five-year old children(8 boys and 12 girls) as comparative group, who attend B Kindergarten in Ulsan-si. For this study, all children of the groups were taken pre-test. After this experiment, difference in creativity of two groups was examined through post-test. The total of 42 sessions were conducted for 14 weeks from the first week of April to the second week of July, 2005. The test tool for this study was Creativity Scale developed by Kim Sang-yun (2003). To verify study questions, the mean of the two groups and the standard deviation were calculated and independent-sample t-test was carried out using SPSS WIN 11.5. The results of this study were as the following: First, integrated activities based on wordless picture books showed statistically significant difference in children's creativity between the experimental group and the comparative one(p<.001), which suggested that the activities affected increase in children's creativity in general. Second, integrated activities centering around wordless picture books indicated statistically significant difference in fluency(p<.05), flexibility(p<.01) and originality(p<.001), sub-factors of children's creativity, between the experimental group and the comparative one. This result revealed that these activities were effective. Third, integrated activities based on wordless picture books did not show significant difference in elaboration, a sub-factor of children's creativity, between the two groups. As the result of this study, integrated activities based on wordless picture books had positive effects on increase in children's creativity.

• Korean Journal of Childcare and Education
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• v.16 no.1
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• pp.51-74
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• 2020

Objective: This study tried to find out if a teacher education program that supports professionalism for beginning child care teachers in toddler classes is effective in professionalism, self-respect, and efficacy in teaching. Methods: The study subjects were 40 beginning child care teachers in toddler classes teaching in day care centers in Seoul, Incheon, and Gwangmyeong Gyeonggi-do. They were divided into an experimental group (20 teachers) and a comparative group (20 teachers). The collected data were applied to the SPSS 22.0 program. To find homogeneity of the two groups, a t-test was conducted. To analyze an intergroup difference, ANCOVA was conducted in the way of setting a pre-test score as a covariate. Results: The experimental group which participated in the program showed more positive effects than the comparative group in terms of professionalism, self-respect, and efficacy in teaching. Conclusion/Implications: Based on the results of this study, the program is expected to be meaningful in the field of early childhood education, and to lay the foundation for beginning child care teachers in toddler classes to become experts in their field.

• Korean Journal of Childcare and Education
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• v.12 no.5
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• pp.17-45
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• 2016

This study aimed to investigate the effect of a young children's happiness program in relation with the Nuri curriculum on young children's happiness and self-esteem. Study subjects included 37 children aged 5 (experimental group 20, comparative group 17) enrolled in A day care center and D day care center located in K district, Seoul. As for the research procedure, an experiment was conducted 48 times in 18 weeks, and the experimental group carried out the children's happiness program linked with the Nuri curriculum. In contrast, the comparative group conducted general activities focusing on the subjects according to the Nuri curriculum. Study results show that there was a significant difference amongst 9 sub-domains related to young children's happiness (health, emotion, immersion, recognition and achievement, parent-child relationship, teacher-child relationship, peer relationship, spirituality, life satisfaction) and 3 sub-domains related to self-esteem (start and spirit of independence, sociality emotionality, academic achievement). Results of this study prove that the children's happiness program in relation with the Nuri curriculum is effective for increasing young children's happiness and self-esteem, and could be used as preliminary data for the possibility of a happiness program in early childhood education settings and happiness education in the future.