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치면세마방법에 따른 치면열구전색재의 변연누출도에 관한 실험적 연구
이상호,이흥교 大韓小兒齒科學會 1995 大韓小兒齒科學會誌 Vol.22 No.1
The purpose of this study was to evaluate the degree of microleakage of the sealants according to the methods of prophylaxis. 90 sound human teeth and 2 types of sealants, light cured type(Teethmate-F,Japan) and dual cured type(Bisco, USA) were used. Samples were divided in to 4 groups according to the methods of prophylaxis. The groups were as follows : Group Ⅰ: rubber cup+pumice Group Ⅱ: Brush+pumice Group Ⅲ: Prophylactic odontomy Group Ⅳ: Air - polishing 10 teeth were used for cleaning state of pit and fissure by methods of prophylaxis and observed by SEM. 80teeth were used for the degrees of dye penetration in the fissure walls were assessed by steroscope at x10 magnification. The data was analyzed statistically by Chi-square test. The results were as follows : 1. Air-polshing method was the most effect on removal of organic materials in pit and fissure, and the prophylactic odontomy was more effective than those of rubber cup and pumice, brush and pumice method. 2. No significant difference in microleakage was showed between light cured sealant and dual cured sealant(P>0.05). 3. Air-polishing method showed the least degree of microleakage of the sealants of all prophylaxis methods. Prophylactic odontomy method showed less degree of microleakage than those of bursh and pumice, rubber cup and pumice method.
Multiloop Edgewise Arch Wire를 이용한 정중변위 밍 전치부 개방교합을 동반한 제3급 부정교합의 치료증례
이흥교,이상호,유종만 大韓小兒齒科學會 1993 大韓小兒齒科學會誌 Vol.20 No.2
The purpose of early orthodontic treatment is to guide the dentitions toward the development of a functionally and morphologically harmonious occlusion. Early treatment of CI.Ⅲ malocclusion is useful to establish the normal occlussion and induce to proper seating for the condyle in the fossa. CI.Ⅲ malocclusion is treated with 3 categories of methods, such as orthodontic tooth movement, modification of growth and orthognathic surgery. This report presents a case of classⅢ malocclusion accompanying the midline shift and anterior openbite treated with Multiloop Edgewise Arch Wire(MEAW) mechanics. Treatment resulted in normal classⅠ molar relationship and functional overbite& overjet. Extrusion of anterior teeth and distal uprighting of posterior teeth were also observed. Further observation is needed to evaluation the stability or recurrence of these cases treated with MEAW.