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신현옥 배화여자대학 1999 培花論叢 Vol.18 No.-
The purpose of this study was to explore the relation between self-concept and creativity in preschool children. And this study investigated the differences of sex in self-concept and creativity. The subject of this study was sampled out from two of the kindergartens located in Seoul. One hundred-eight preschoolers(58 males and 50 females) ranging in age from 5.7 years to 6.7 years participated in the study. The tests used in this study were JPPST(Joseph Pre-school and Primary Self-concept Screening Test) and Creativity Scale' developed by Wallach and Kogan (1971). The data was analyzed in terms of Pearson's correlation and t-test. The results of this study were as follows: 1. There was a statistically significant correlation between preschool children's self-concept and creativity. 2. There was not a statistically significant difference according to sex in preschool children's self-concept. 3. There was a statistically significant difference according to sex in preschool children's creativity. In conclusion, It is related self-concept with creativity of preschool children inter-relatively, so that the formation of positive self-concept will effect the development of creative human being.
Shear Bond Strength Comparison of Different Adhesive Systems to Calcium Silicate-based Materials
신현옥,김미선,남옥형,이효설,최성철,김광철 대한소아치과학회 2018 大韓小兒齒科學會誌 Vol.45 No.4
The aim of this study was to measure the shear bond strength (SBS) of different adhesive systems to calcium silicatebased materials (Biodentine and RetroMTA). Eighty cylindrical acrylic blocks, with a hole (5.0 mm diameter, 2.0 mm height) in each, were prepared. The holes were filled with Biodentine (BD) and RetroMTA (RMTA), and the specimens were divided into 2 groups. Each group was classified into 4 subgroups: ClearfilTM SE (CSE) ; AQ bond (AQ) ; All bond universal Self-etch (ABU-SE) ; and All bond universal Total-etch (ABU-TE). After the application of different adhesive systems, composite resin (Z350) was applied over BD and RMTA. The SBS was measured using a universal testing machine, and the data were compared using the Kruskal-Wallis test and the Mann-Whitney test. The highest and lowest values of SBS were observed for BD-ABU-SE and RMTA-AQ, respectively. No significant differences were found in the SBS between ABU-TE and ABU-SE and between ABU-TE and CSE to BD and RMTA. According to the data, BD showed a higher SBS than did RMTA when BD and RMTA are compared in the same adhesive agents. Further, among all groups, composite resin with ABU-SE showed better bond strength to BD and RMTA.