치은 섬유아세포에 미치는 치주포대 추출물의 영향

이덕혜,서조영,박준봉 慶北大學校 齒科大學 1990 慶北齒大論文集 Vol.7 No.1

The purpose of this study was to evaluate the effect of soluble extracts form four peridontal dressings, two of which were eugenol and the others were non-eugenol, upon human gingival fibroblasts in vitro. Each of mixed dressing which added to medium was incubated in the 35mm petri dish for 24hrs. After discard of the supernatant of old medium, those cells were cultured with fresh prepared medium in the 5% CO2 incubator at the state of 37℃, for 24, 48, & 72 hours. Author counted the number of cells by hemocytometer at each designed time and observed the change of morphology of cells stained with Hematoxylin-Eosin on the inverted phase contrast microscope The results were as follows. 1. In the course of time, K.P pack was the most significant decrease of cell counts in comparison to control cultures with Wondrpak, Coe-pak Cellopack following in that order at original extracts and there were somewhat decrease at 1/10 & 1/100 diluted solutions in all samples. 2. Throughout the present study, the eugenol containing periodontal dressings, K.P pack & Wondrpak, showed more cytotoxic effects on fibroblasts than non-eugenol dressings, Cellopack & Coe-pak. 3. In microscopic apearance of four dressings, the degenerative changes with pyknotic nuclei, lysis of cytoplasm and marked vacuolizaion were evident at orignal extracts. 4. At 1/10 & 1/100 diluted solutions, there was nothing remarkable morphological change in all kinds of periodontal dressings as time goes by. J. Kyungpook Univ. Sch. Dent. Vol. 7, No. 1, 9∼21, 1990

치과기공사의 자아개념과 전문직 태도와의 관계 연구

李德惠,郭秀眞 동남보건대학 2001 論文集-東南保健大學 Vol.19 No.1

The purpose of this study was to investigate the relationship between self concept and professional attitude of dental technician. Date were obtained from 104 dental technician who were working at dental laboratory located in Seoul Kyung-ki In-chon. The results, derived from using the spsswin, were as follows: 1. The mean score of self-concept(3.73) was generally affirmative and the score of perceptive-self(3.82) was a little higher than that of evaluation-self(3.64). 2. The mean score of professional attitude was 2.96 points, generally affirmative. 3. The relationship between general characteristics and the degree of the self-concept showed a very significant difference in regard to the job satisfaction, the plan to the working in the future. 4. The relationship between general characteristics and the degree of the professional attitude showed a very significant difference in regard to the job satisfaction, the plan to the working in the future and the motive of a selection department of dental technician. 5. The correlation between self-concept and professional attitude of subjects showed normal correlation((r=.229, p=0.01) : the higher the degree of self-concept, the higher the degree of professional attitude.

치기공과 학생들의 실습기관에 따른 현장실습 만족에 관한 연구

이덕혜,민병국,이주희 동남보건대학 2004 論文集-東南保健大學 Vol.22 No.2

This study was attempted to investigate satisfaction with field practice of dentinal technician students in each practical institution with an aim of contributing to the effective assignation of the field practice places and the guidance of the field practice,

지역사회 노인의 치과보철물 장착의 만족도에 관한 조사연구

이덕혜,성환경 동남보건대학 2003 論文集-東南保健大學 Vol.21 No.1

For this study, questionnaire sheets were distributed to 111 people with dental prosthesis who are participating in the programs run by the Community Health Care Center to explore and develop the way of oral health education for improvement of the lives of old people in the local community. The data were analyzed by frequency, percentage and z² -test using SPSS WIN. The results of the study are as follows : l. As for the satisfactory level of the dental prosthesis treatment, 43.2% of the respondents who began to use dental prosthesis after 61 years old. 32.4% of the respondents used partial denture. 42.3% of the respondents expected that they would be a little satisfied with the dental treatment. 36.0%of the respondents showed average satisfaction on the dental prosthesis treatment and the most unsatisfactory factor of the dental prosthesis was high cost, by 36.0% of the respondents. 2. As for chewing after wearing the dental prosthesis, 65.8% of the responses felt comfortable during chewing and 53.2% felt uncomfortable during chewing. 86.5% felt uncomfortable during swallowing. 68.5% said that they didn't bite the tongue or cheek during chewing and 64.0 said they use only one side of the prosthesis during chewing. 3. As for the pronunciation with dental prosthesis 76.69% of the respondents told that speaking became easy after wearing dental prosthesis. 76.6% said the prosthesis never slipped from the alveolar ridges during talks. 71.2% said the prosthesis never collided each other while speaking. 68.5% said there was no feeling of tongue tightness or tongue's being disturbed. 60.4% said they felt no difficulty in specific pronunciation due to the dental prosthesis. 4. As for eating after wearing the dental prostheses, 52.3% of the respondents said that eating got roughly easy. As for the kind of food mostly eaten, boiled vegetables or boiled cereals were chosen by 78.4%. As for the inconvenience during eating due to the dental prostheses, 41.4% selected average level and there was significant difference between male and female (p<.019). 42.3 % responded that the influence of the dental prostheses on eating habit was mostly existent. 5. As for the change of life after wearing the dental prostheses, 35.1% of the respondents said that the kinds and numbers of chewable food with dental prostheses decreased. 31.5% said there were few changes in esthetic side and 55.9% said there were few changes in psychological side. 47.7% responded that there were relationship between dental prostheses and the quality of life. As the average life length has increased thanks to the development of medical science, the interest in the welfare of the elderly has also increased among the government and the people. Men experience aging as they become older and also their mouths meet unfavorable condition including the loss of natural teeth. Therefore, the dental treatment, especially making of dental prostheses, needs extensive knowledge for aging, clinical knowledge and technology. For systematic oral health care for the old, medical service including oral health education and periodic oral examination should be extended with the financial support from the government to improve the life quality of the elderly.

치과기공사의 직무분석에 관한 연구

李德惠,鄭寅聖 동남보건대학 2002 論文集-東南保健大學 Vol.20 No.1

This study has been performed to analyze the job of dental technicians. 450 copies of questionnaire were distributed to dental technicians working at dental laboratory and dental laboratory of individual or general hospitals, and 299 technicians becamethe subjects of this study. excluding materials which have insufficient data. General features of the subjects have been derived based on percentage and, average, and standard deviation were calculated with descriptive statistic. The results are as follows; 1. As for the preparation for production. in the course of request confirmation, confirmation of kind of prosthesis and material wasfound to be the most important. In the course of model confirmation, confirmation of breakage and deformation were found to be the most important. 2. As for the production, in the course of making temporary crown prosthesis. examination of occlusion was found to be the most important. In the course of making inlay and crown & bridge prosthesis, examination of occlusion was found to be the most important. And in the course of making metal bonded porcelain crown and all ceramic crown prosthesis. confirmation of fitness and build up were found to be important. In the course of making temporary denture prosthesis, arrangement of artificial teeth was found to be the most important. And in the course of making partial denture and complete denture prosthesis. arrangement of artificial teeth was found to be the most important. In the course of making attachment prosthesis, anchoraging attachment was found to be the most important. In the course of making implant prosthesis, confirmation of fitness was found to be the most important. In the course of making orthodontic appliance, confirmation of fitness have been found to be the most important. 3. As for the management of dental laboratory, in the area of management control, education and in the area of dental laboratory management, safety control were found to be the most important. 4. As for the self-development. in the area of improvement of expert knowledge, domestic and overseas training and in the area of self-management, health care were found to be the most important.

치과용 합금에 따른 도재의 화학적 결합에 관한 비교 분석

李德惠,郭秀眞 동남보건대학 2001 論文集-東南保健大學 Vol.19 No.2

The purpose of this study was to evaluate the chemical bond strength between dental alloy and Porcelain according to various kinds of dental alloy. Successive bonding of dental alloy and Porcelain is related to 4 types of bonding mechanism Chemical bonding, Physical bonding. compressure bonding, van der Waal's force bonding. It was proved a theory by various experiments that the most important bonding strength is originated from chemical bonding mechanism. 1. Chemical bonding strength. It is basically caused by oxide layer at the interface of dental alloy and porcelain forming in heat-treatment, and The oxide element is different by various dental alloy type. 2. Precious metal alloy. A Main components of Precious metal alloy are sold, Platinum and palladium, but these components are difficult to oxide change of element. and It needs the nonprecious metal elements like Sn, In. Fe to help forming oxide layer. 3. Semi-precious alloy. Oxide product of most semi-precious metal is nearly same as Precious metal alloy, but Pd-Cu ceramic alloy is different with other thing. It is use Ga₂O₃, SnO₂. CuO and also heat-treatment should be performed in vacuum conditions for much gas inhaled in the casting. 4. Nonprecious metal alloy. A main component of nonprecious metal alloy is easy to oxide change of element. and It has a tendency forming excessive oxide product to make bonding strength week. Oxide layer element of Ni-Cr ceramic alloy being used in most local laboratories is Cr₂O₃. HiCr₂O₄, NiO. 5. Degassing. This is important course to produce oxidation forming in the heat-treatment. and It needs different methods according to precious metal alloy, semi-precious metal alloy and nonprecious metal alloy. From the result of this study it was found that we need more researchs for producing surface oxide layer and heat-treatment which may improve interfacial bonding strength between alloy and porcelain

치과기공사의 임파워먼트와 직무만족, 직무몰입과의 관계

이덕혜,이주희 동남보건대학 2003 論文集-東南保健大學 Vol.21 No.1

The purpose of this study is to analyze the relationship of empowerment with job satisfaction and organizational commitment perceived bydental technicians. Data for this study were obtained from 212 dental technicians working for dental laboratory or dental departments of clinics or hospitals in Seoul and Gyeonggi area. The data were analyzed using frequency, percentage, mean, standard deviation, t-test, one-way ANOVA, Pearson's Correlation Coefficients, Cronbach's alpha Coefficients and Multiple Regression. The results were analyzed with spss/pc+ and the conclusion is as follows: 1. The level of dental technicians empowerment was 3.27, job satisfaction was 3.32, and their organizational commitment was 3.36. 2. Among general characteristics of subjects, working part(p<.01). position(p<.01) and salary(p<.05) have different effect on empowerment. Among general characteristics of subjects. working part(p<.05), position(p<.05), working experience(p<.01), and salary (p<.01) have different effect on job satisfaction. Among general characteristics of subjects, working place(p<.05), working part(p<.01), position(p<.01), working experience (p<.01) and salary(p<.01) have different effect on organizational commitment. 3. Empowerment showed a positive correlation with job satisfaction(r=.746. p<.01), organizational commitment(r =.731, p<.01).

연구포스터발표 : Blasting과 알칼리-열 처리된 타이타늄 표면이 골아 유사세포의 활성도에 미치는 영향

이덕혜,박진우,이재목,서조영 대한치주과학회 2004 대한치주과학회 학술대회자료집 Vol.2004 No.2

치과기공사국가시험 문항개발기준안연구

이덕혜,정인성,한창식,Lee, Duck-Hye,Chung, In-Sung,Han, Chang-Sik 대한치과기공학회 2002 대한치과기공학회지 Vol.23 No.2

This research was preformed for the purpose of preparing the items of standard model of the national dental technician test base on the duty analysis of the dental technician. The results of the duty analysis for the dental technician follows. 1. The dental technician is a profession to make the oral function smooth through the dental supplement and equipment in a scientific method and the skilled technique. 2. The duty of the dental technician are determined as A. preparation for manufacture B. manufacture C. management of the place of the dental technology D. self-development. A. The field of "the preparation for manufacture" are determined as 1. to confirm work authorization 2. To confirm the working model, B. The field of "In manufacture" are determined as 1. to manufacture the temporary crown 2. to manufacture the inlay and crown & bridge prosthesis 3. to manufacture the porcelain fused metal crown prosthesis 4. to manufacture the all ceramic crown prosthesis 5. to manufacture the temporary denture prosthesis 6. to manufacture the partial denture prosthesis 7. to manufacture the complete denture prosthesis 8. to manufacture the attachment prosthesis 9. to manufacture implant prosthesis 10. to manufacture the removable orthodontic device, 11. to manufacture the fixed orthodontic device, 12. to manufacture the orthodontic study cast C. The field of "in management of the dental lab." are determined as 1. management 2. to control the dental lab. D. The field of "In the self-development" are determined as 1. to improve the professionalism 2. self-control. 3. The developing items selected under the duty evaluation of the dental technician are l7s in the manufacture preparation, 1,011s in the manufacture, 7s in the management for the dental technology, 5s in self-development, and in all together 1,040s

접착제가 치과영역에 사용되어지는 범위에 대하여

이덕혜 치과연구사 1984 치과연구 Vol.16 No.5