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치근면 활택 방법 및 수종의 치근면 처리 약제의 효과에 대한 비교 연구
강승모,홍기석,임성빈,정진형,Kang, Seung-Mo,Hong, Ki-Seok,Lim, Sung-Bin,Chung, Chin-Hyung 대한치주과학회 2005 Journal of Periodontal & Implant Science Vol.35 No.3
The purpose of this study was to compare the effect of tetracycline HCL, Citric acid and PrefGel applied on the root surfaces that planed with periodontal curret with Roto bur. In this study, 20 extracted teeth with advanced periodontal disease were used. The teeth were root planing with periodontal curette and Roto bur. Following root planing, each agents was burnished on the prepared root surface for 3 minutes to find opened dentinal tubules. And then, each specimens were investigated using scanning electron microscope. Amount of remained cementum by loss of tooth substance index and the number of opened dentinal tubules were evaluated to each specimens The results were as follows. 1. Groups treated with periodontal curette were almost seemed no removed. Other groups treated with Roto bur showed partially opened dentinal tubule orifices. 2. Loss of tooth substance index were compared between groups. There was no statistically difference between periodontal curette groups. Between Roto bur groups was alike. But there were statistically differences between periodontal curette and Roto bur groups. 3. At comparing with various root conditioning agents, Tetracycline HCL group took statistically higher than Citric acid and PrefGel in opened dentinal tubules. On the other hand, there was no statistically difference between Citric acid group and PrefGel group. As a result of this study, groups treated with Roto bur showed more cementum removed than groups treated with periodontal curette. In a treatment for regeneration of periodontal tissue, it was regarded that Roto bur should be used and that Tetracycline HCL would be more effective as chemical root conditioning agent.
강승모,류수연,임경원 공주대학교 특수교육연구소 2023 특수교육논집 Vol.28 No.2
Purpose: The purpose of this study was to analyze the overall trend of qualitative case studies in the field of special education listed in domestic education-related journals and to present the direction of future research. Method: The papers to be analyzed are 51 qualitative case studies in the field of special education listed 31 domestic education-related journals, and analysis factors were used to analyze trends by year and journal, trends by research topic, and characteristics of research methods. The research findings through data analysis are as follows. Results: As a result of the studies, qualitative case studies in the field of special education in Korea have conducted in the field of various special education, treatment education, general education, and social welfare, with the research of subject education and instruction-learning strategy and the research related to family support accounting for the largest portion. Single-total case studies and technical - descriptive studies were the most common research design and type in research methods, and interview studies were the most frequently conducted in special schools for special education teachers and students with intellectual disabilities. In addition, it was found that various methods were used to secure the trustworthiness of qualitative case studies. Conclusion: Based on the above findings, qualitative case studies in the field of special education should present research designs and types so that the research methodological elements of qualitative case studies can be clearly revealed, and as it is a study on a specific case, systemicity and concreteness need to be clearly described so that the boundary between temporality and spatiality of the case can be clearly revealed. And finally, in order to secure the truthfulness of the research, detailed comments are required on the data collection process and the verification method.