http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
하악 유리단 국소의치하에서 back-action 클래스프 설계 변화에 따른 광탄성 응력 분석
임수령,계기성,고영무,Lim Soo-Lyoung,Kay Kee-Sung,Ko Yeong-Mu 대한치과보철학회 1992 대한치과보철학회지 Vol.30 No.3
The purpose of this study was to analyze the magnitude and distribution of stress using a photoelastic model from the mandibular distal extension removable partial dentures with the mesial or distal placement of the occlusal rest and the mesial or distal connection in the back-action clasp with the five various designs of the back-action clasp, that is, the mesial connection and the distal rest, the distal connection and mesial rest, the mesial connection and mesial rest, the distal connection and the mesial and distal rest, and the mesial connection, and the mesial and distal rest. A photoelastic model was made of the epoxy resin(PC-1) and the hardner(PLH-1) with the acrylic resin teeth used and was coated with the plastic cement-1 at the lingual surface of the model and then five kinds of the removable partial dentures on the photoelastic model were set. A unilateral vertical load of 12.5 kg was applied on the central fossa of the first molar with the use of specially designed loading device and the pattern and distribution of the stress of the photoelastic model under each condition was analyzed by the reflective circular polariscope. The following results were obtained. 1. In the back-action clasp with the mesial connection and mesial rest of the case 3, the effect of the stress distribution was the most favorable. 2. In the back-action clasp with the mesial and distal rest, of the case 4 and 5, the stress distribution was more greatly showed in the terminal abutment. 3. Generally, the stress distribution was more favarable in the mesial connection than in the distal connection. 4. In the back-action clasp with the mesial connection of the case 1, 3 and 5, the stress distribution was the most favorable in the mesial rest.
기존 Shade guide의 변화 처리에 따른 색 재현성에 관한 실험적 연구
계기성,임수령,강용구 大韓齒科器材學會 1991 대한치과재료학회지 Vol.18 No.1
The purpose of this study was to evaluate the color differences that can exist between the #67 Trubyte Bioform shade guide of the full thickness, the half thickness, the full thickness with silver color die spacer and the half thickness with silver color die spacer and the sample fabricated by the laboratory made with the identical shade designation in the dental laboratory using colorimeter (TC-6FX, Tokyo Denshoku Co., Ltd., Japan). The four kinds of the full thickness, the half thickness, the full thickness with silver die spacer, the half thickness with silver color die spacer of #67 Trubyte Bioform shade guide were made. The sample fabricated by the laboratory were made according to the firing schedules for Ceramco opaque and body porcelain out of #67 Ceramco porcelain powders with the backing of the nonprecious Vera Bond metal plate of the round form with the thickness of 0.5mm. The color of the four kinds of #67 Trubyte Bioform shade guide and the sample fabricated by the laboratory was expressed in terms of CIE L*a*b* color coordinates by means of a colorimeter. Color differences(△E*ab) for each paired comparison within each shade group were calculated from the color data. The results were as follows: 1. The means of L*, a*, b* of the sample fabricated by the laboratory and full thickness, the half thickness, the full thickness with silver color die spacer, and the half thickness with silver color die spacer of #67 Trubyte Bioform shade guide were measured(Table 2). 2. There were not statistically significant difference at a* and b* except L* at L*a*b* color coordinates between the full thickness of #67 Trubyte Bioform shade guide and the sample fabricated by the laboratory and there were statistically significant difference between the half thickness of #67 Trubyte Bioform shade guide and the sample fabricated by the laboratory. 3. There were not statistically significant difference except b* of the half thickness with silver color die spacer of #67 Trubyte Boform shade guide at L*a*b*color coordinates between the full thickness and half thickness with silver color die spacer of #67 Trubyte Bioform shade guide and the sample fabricated by the laboratory. 4. As the color difference (△E*ab) between the sample fabricated by the laboratory and the #67 Trubyte Bioform shade guide by the modification increased in the order of the half thickness with silver color die spacer (0.991), the full thickness with silver color die spacer (1.157), the full thickness (2.399) and the half thickness (7.732), the color of the sample fabricated by the laboratory were to copy more easily the full thickness and half thickness with silver color die spacer of #67 Trubyte Bioform shade guide (Table 4).
최병기,계기성,임수령 朝鮮大學校 口腔生物學硏究所 1991 口腔生物學硏究 Vol.15 No.-
The purpose of this article was to investigate how the disharmony between the anterior guidance and condylar guidace is in relation to the patient with the internal derangement. In this study, the normal subjects were 30 students aged between 22 and 27 years and were selected from a pool of students who are attending at school of dentistiry, Chosun University and did not posses the symptom like the temporomandibular joint click, pain, opening limitation of the mandible and restoration. And experimental subjects were 40 patients who were analyzed into the internal drangement of the temporomasdibular joint in the prosthodontic department, infirmary of dental college, Chosun university. The results were as follows: 1. The mean age of the internal derangement of temporomandibular joint was 35.42, and 21-32 age was 37.5% of experimental subjects. 2. The sex distribution of the internal derangement of temporomandibular joint was 62.5% in female, and 37.5% in male. 3. In normal subject, the means of the anterior guidance and the condylar guidance were 48.67 ± 3.04° and 46.10 ± 4.39° respectively. 4. The means of the anterior guidance and condylar guidance were 37.06 ± 8.67° and 53.63 ± 13.59° respectively in experimental group I. 5. The means of the anterior guidance and condylar guidance were 57.64 ± 7.38° and 36.65 ± 8.46° respectively in experimental group Ⅱ. 6. The means of the anterior guidance and condylar guidance were 49.56 ± 12.72° and 43.06 ± 10.60° respectively in experimental group Ⅲ. 7. Group Ⅰ,Ⅱ,Ⅲ were 45%, 35Ⅲ, and 20% respectively in experimental group.