http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 박몽숙 (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
연마 방법에 따른 Cerec block의 표면 거칠기 비교
김성광,박몽숙 전남대학교 치과대학 1995 전남치대논문집 Vol.7 No.1
This study was performed to investigate the surface roughness of the Cerec Vita Mark Ⅱ block polished by various polishing techniques, compare with that of the Vintage enamel porcelain glazed by high temperature glazing technique. All of the Cerec specimen were finished with sequential use of high speed diamond burs(grit 45, 30 and 15㎛). The groups were divided into 5 groups : Group Ⅰ : Cerec Vita Mark Ⅱ block specimens polished with Sof-lex discs. Group Ⅱ : Cerec Vita Mark Ⅱ block specimens polished with Two Striper MPS. Group Ⅲ : Cerec Vita Mark Ⅱ block specimens polished with Enhance. Group Ⅳ : Cerec Vita Mark Ⅱ block specimens polished with Porcelain laminate polishing FG kit. Group Ⅴ : Vintage enamel porcelain glazed by high temperature glazing technique. Each group was consisted of 10 specimens. The surfaces produced wereexamined quantitatively using a laser specular reflectance machine(PertheJSM-5400, JEOL, Japan). The results were as follows : 1. The arithmetic mean roughness value(Ra) in groups 1, 2, 3 and 4 was higher than that of group 5. There was statistically significant difference(P<0.05). 2. The arithmetic mean roughness value(Ra) decreased in the following orders : group 1, group 2, group 4, group 3 and there was no statistically significant difference between group 1 and group 2, group 3 and group 4. There was statistically significant difference among group 1, 2, and group 3, 4 and group 5(P<0.05). 3. The maximum individual peak-to-valley-height(Rmax) decreased in the following orders : group 2, group 1, group 4, group 3, group 5 and there was no statistically significant difference between group 1 and 2, group 1 and group 4, group 3 and group 5. There was statistically significant difference among group 1, 2, and group 1, 4 and group 3, 5(P<0.05). 4. The treated surfaces of group 5 had smoother surface than that of groups 1, 2, 3, 4 with SEM.
-
민권남,박몽숙 전남대학교 치과대학 1998 전남치대논문집 Vol.10 No.1
The purpose of this study was to evalute the effect of immersion disinfection on the dimensional stability of rubber impression materials. The metallic master model was made in order to simulate the intraoral arch form. Impressions were made from four impression materials (Exaflex, Extrude, Reprosil, Impregum-F) and immersed in three disinfectant solutions (Wydex, Vi-Pon, Potadine). Casts from the impressions were measured according to the interpreparation distance. The A-B and The B-D abutment distance were compared with the control group and disinfected groups. The results were as follows; 1. The measurements of the stone cast increased relative to the master model and there was a significant difference (P<0.05). 2. The relative dimensional change of the stone cast as compared with master model ranged from 0.10% to 0.56% in the A-B distance and ranged from 0.04% to 0.27% in the B-D distance. 3. The dimensional change of the disinfected groups as compared with the control group was significantly different in the three impression materials except for Impregum-F (P<0.05). 4. The relative dimensional change of the disinfected groups compared with the control group ranged from 0% to 0.20% in the A-B distance and ranged from -0.09% to 0.11% in the B-D distance. These results suggest that immersion disinfection of rubber impression materials by chemical disinfectants causes very small dimensional change and the change is clinically acceptable for prothesis fabrication.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
