• 문화기술의 융합
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• 제9권6호
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• pp.67-71
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• 2023

최근 치과보철물 제작 방식은 ICT를 기반으로 하는 디지털방식으로 변화를하고 있다. 특히 치과용 CAD/CAM이나 3D 프린팅의 등장으로 임상에서는 아날로그 방식에서 점진적으로 컴퓨터를 활용하는 디지털 방식을 선택하고 있다. 임플란트의 어버트먼트를 제작하는 방식은 기존의 환봉제작 방식과 CNC 밀링기를 활용하여 제작하는 방식이 있다. 본 연구에서는 두 가지 방법으로 보철물의 변연과 교합면을 제작할 때 보다 정밀하고 오차가 적은 제작 방법이 무엇인지를 얻고자 실험을 실시하였다. 실험 결과 CNC 밀링기를 활용하여 임플란트 어버트먼트 보철물을 제작하는 방식이 변연과 교합면의 적합도 모두에서 오차가 적고 정교한 가공이 가능하여 맞춤형 보철물 제작을 하는데 유용한 것으로 나타났다.

• 대한치과기공학회지
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• 제25권1호
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• pp.203-218
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• 2003

The 3 year graduate school course of the dental technician, which has been enforced since 1994 till the present date, differs from the currently existing 2 year graduate course because of an 8 weeks clinical field training course being newly executed and an imposed curriculum about manufacturing specialized prosthetics like all-ceramic, double prosthetic technology, attachment, and implant. Even though nearly 10 years have passed, the education program of the 18 colleges have still not been standardized and the subjects differing a little, while some are still not following the 3 years graduate course. The goal of this research is to emphasize the qualities of the 3 years graduate program and enable the dental technician to handle clinical models in the dental technical clinic right after graduation by adding clinical field training in the dental technician education program of the 18 colleges. Also in accordance to a national and international increase in esthetical prosthetics, credits, weekly study hours, education practice time of specialized prosthetic dental technology can be analyzed as follows. 1. In the year 2003, currently colleges start clinical practice education starting from the 1st semester of the 2nd year junior year, to the 2nd semester of 3rd year the varying in time with adequate class time, and credits. The average credit is 9.56, and weekly average class time is 18.00 hours. later clinical trainee education will be adjusted to the 3 year graduate school course to 10 credits and 20 hours and the adequate education period should be the 2nd semester of 3rd grade when most basic clinical education has been covered. 2. Currently in the year 2003, all-ceramic education has an average credit of 8.01 in 17 colleges with an exception of Ma-san college. The weekly average theoretical education is 4.94 hours, weekly clinical education of 7.88 hours and currently in 14 colleges porcelain technical class usually starts in the 1st semester of the 2nd year. All-ceramic education is thought to have adequate credits, timing, and weekly study hours. 3. Currently in 2003 implant education is enforced in 11 colleges including Bu-san Catholic university and the education period is usually in the 3rd year. Out of the 11 colleges, only Bu-san Catholic univ., Ma-san and Shinheung college have practice training classes. We knew that Shingu, Dongu, Mokpo science colleges have practice training as a curriculum, namely specific prosthetics laboratory. Out of the 9 colleges enforcing implant education the average credits taken are 2.56, and the average hours of weekly theory education is 2.14, but with the exception of Shinheung college which has an implant practice training course theory and practice classes are not divided. Therefore implant education is thought to start in the 3rd year as a 3 credit course with 3 hours of theory and practice each. 4. Currently in 2003, theoretical attachment education is given in 15 colleges and including practical training it is given in 10 colleges. The education starts 1st semester of the 2nd year till the 2nd semester of the 3rd year. The average credit of attachment theory education in the 15 colleges was 3.64, the average weekly theoretical education was 2.64, and the average weekly practice training out of the schools teaching it was 3.20. Later attachment education is thought to start the 1st semester of the 3rd year as a 3 credit course with 2 hours of theory class and 3 hours of practice training. 5. Double prosthetic technology is currently carried out in Dae-jon Health Science college(2nd year 2nd semester, 2 credits, theory 2hours), Gimcheon college (1 credit, 2 hours of practical training), Bu-san Catholic university (4th year 2nd semester, 4 hours of theory. practice). When the 3 year course is enforced, education will start 1st semester of the 3rd year with 2hours of theory and practice each. 6. The newly installed programs of the 3 year education is clinical field training, and specialized prosthetic manufacturing practice like all-ceramic, double prosthetic technology, attachment, and implant. If such education is to be effectively managed, a primary precursor as systemic basic clinical education is thought to be important. 7. Nationally in the 18 colleges of dental technology the currently executed curriculum course had varying subjects, class time according to the subject, and credits by each college. The curriculum difference between the colleges must be settled.

• 대한통합의학회지
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• 제4권1호
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• pp.57-64
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• 2016

PURPOSE : The purpose of this study was to examine the oral health behaviors of child users of local children's centers before and after receiving oral health education in an effort to develop a well-organized oral health education program. METHOD : The subjects in this study were the elementary school students who used 13 different local children's centers in the city of Busan. The questionnaire was intended for children and consisted of 31 items, which were four about eating food, three about washing hands, two about smoking, five about toothbrushing and dental clinic visit, five about tooth damage and dental pain, seven about knowledge and awareness of dental health and six about dental health attitude. RESULT : 1. The rate of the children who replied they didn't brush their teeth on the previous day stood at 5.8 percent before the program, and this rate rose to 13.0 percent after that. The differences were significant(p=0.026). 2. The rate of the former after the program stood at 61 percent, and that of the latter stood at 39 percent. The differences were statistically significant(p=0.019). CONCLUSION : The oral health behaviors were investigated before and after oral health education was provided, and this education was found not to be sufficient enough to change their oral health care. So it seems necessary to increase the frequency of oral health education by providing it twice a year. In addition, oral health education programs geared toward teachers in local children's centers who spend time with children should additionally be strengthened to offer more education to these children.

• 한국산학기술학회논문지
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• 제10권9호
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• pp.2471-2477
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• 2009

본 연구는 치과기공사의 작업환경과 직무스트레스 정도를 분석하고 그 상관관계를 알아보기 위해 서울특별시, 인천광역시, 충남지역의 치과기공사 180명을 선정하고 자기 기입식 설문지를 이용하여 2009년 4월 6일에서 5월 20일까지 조사를 실시하였다. 수집된 자료의 분석결과는 다음과 같다. 1. 연구 대상자의 작업 환경정도를 분석한 결과 건강 항목에서 유의한 차이가 있었다(P<0.05). 작업환경 평균은 1.53 으로 높게 나타났다 2. 연구대상자의 직무 스트레스 유발정도를 분석한 결과 모든 변수에서 유의한 항목은 없었다. 직무 스트레스 평균은 3.44로 높게 나타났다. 3. 작업환경과 직무스트레스의 상관관계는 대부분의 변수가 역 상관관계 가 있는 것으로 나타나 작업환경이 나쁠수록 직무스트레스를 많이 받는 것으로 나타났다.

• 대한치과기공학회지
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• 제26권1호
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• pp.77-88
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• 2004

Glass ceramics for dental crown prosthesis were prepared by crystallization of CaO-MgO-SiO2-P2O5-TiO2 glasses. Their crystallization behaviors have been investigated as a function of heattreatment temperature and holding time in relation to mechanical properties. The results are as follows: Vickers hardness and bending strength of glass ceramics increased due to the precipitation of apatite, whitlockite, $\beta$-wollastonite, magnesium titanate, and diopside crystal phases within glass matrix. The final crystalline phase assemblages and the microstructures of the glass ceramics were found to be dependent on heat-treatment temperature and holding time. Vickers hardnes and bending strength of glass ceramics increased with increasing heat-treatment temperature and holding time.

• 대한치과기공학회지
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• 제21권1호
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• pp.153-163
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• 1999

The 21st centurt, the era of change-space, is requesting us to readjust our education system. In other words, we should renew it by looking back into the past cultivate more advanced ideas. As a matter of fact junior colleges have been considered just as miniture of universities in every way such as curriculum, prossor emploment, school affairs, etc. Therefore we should change our existing education system not to be criticized for the next century. May students are trained for industry as dental technicians in our department of college. We should educate experiment and practice substantially as college professors as well as exert ourselves in developing our abilities to adapt to high diverse industrial technique, putting emphasis on practice more than theory. It is mecessary for us to sufficiently teach the technique to good students and make them display their abilities in order to produce high quality goods. Reinvestment ineducation is a condition precedent. Dental laboratories have just employed the students that graduated from our college. However it's time for a change. They should pay attention to our education and assist us in all respects with the thought of equally educating professional dental technicians together with us. The field practice system is subject to reinforcement so that our students have more opporunities of utilizing the tools and materials for practice. Finally we should not only carry out new reserch more deeply no less than dental technicians who are experienced in business for development of education system but endeavor to meet pratical education by adding what is pratically needed in dental laboratories to the existing education system.

• 대한치과기공학회지
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• 제10권1호
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• pp.55-66
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• 1988

The great sudden change of circle of dental laboratory technology brought many discord between the new growing environmental group and the old group. In order to know the satisfactory degree of Dental Laboratory Heads about all and woman dental technicians who graduated from junior college, this study was conducted for 41 dental laboratory heads in Pusan area during Aug. to Sep. 1986 by means of a questionaire. The results are obtained as follows : 1. By born place, the dental laboratory heads’ satisfactory degree mean of items about all dental technician who graduated from junior college were Pusan group 3.55, Kyungnam group 2.94. The difference among the groups was significant enough(P<0.05). The satisfactory degree about woman dental technician graduated from junior college were Pusan group 3.45, Kyungnam group 2.72. 2. By age, The degree of satisfaction of items about all graduate dental technician were 30$\sim$34 age group 3.13, 40$\sim$44 age group 2.71. The degree of satisfaction about woman graduate dental technician were 30$\sim$34 age group 3.13, 40$\sim$44 age group 2.71. The degree of satisfaction about woman graduate dental technician were as follow : 35$\sim$39 age group 3.50, 45$\sim$49 age group 3.16, 30$\sim$34 age group 2.86, 40$\sim$44 age group 2.43. 3. By job career, the highest degree item out of satisfaction about all graduate dental technician was 6$\sim$10 years group 3.58, the other items were 1$\sim$15 years group 2.90, 16$\sim$20 years group 2.71. The satisfactory degree item about woman graduate dental technician was 6$\sim$10 years group 3.43, 16$\sim$20 years group 3.15, 11$\sim$15 years group 2.82 respectively. 4. By managing term of respondents’ dental laboratory, the satisfactory degree of items about all graduate dental technician were below 2 years group 3.25, 3$\sim$6 years group 3.14, 7$\sim$10 years group 2.93 in order. The satisfactory degree items about woman graduate dental technician were 11$\sim$14 years group 3.25, 3$\sim$6 years group 3.14 7$\sim$10 years group 2.80 in order. 5. By acquired qualification of licence test, the satisfactory degree of dental laboratory heads about all graduate dental technician were job career group 3.07, graduated from Dept. of Dental Technology group 3.00. The satisfactory degree about woman graduate dental technician were job career group 3.03 and graduated from Dept. of Dental Technology group 2.57. 6. By dental technician numbers of respondents’ dental laboratory. the satisfactory degree of items was as follow: 10$\sim$13 persons group is 2.86, 6$\sim$9 persons group 3.25, below 5 persons group 3.11. There was significant enough.(P<0.01). The satisfactory degree items about woman graduate dental technician were below 5 persons group is 3.00, 10$\sim$13 persons group 2.79, 6$\sim$9 persons group 2.67. 7. by the outlook of occupation, the satisfactory degree of dental laboratory heads about all dental technicians who graduated from junior college were neither good norbad group 3.20 bad group 2.59, good group 3.13. The difference among the groups was significant enough(P<0.01). The satisfactory degree about woman dental technicains graduated from junior college were good group 3.25, neither good nor bad group 2.80, bad group 2.75. The difference among the groups was significant enough.(P<0.01) 8. By occupational satisfaction, The satisfactory degree of items about all graduate dental technician were neither satisfied nor dissatisfied group 3.08, satisfied group 3.17, dissatisfied group 2.89. The satisfactional degree of items about woman graduate dental technician were satisfied group and neither satisfied mor dissatisfied group each 3.00 9. By the outlook of employment, the satisfactory degree of items about all graduate dental techician were bad group and neither good nor bad group 3.00. There was significant enough.(p<0.02) About woman graduate dental technician were good group 3.80, neither good nor bad group 3.00, bad group 2.84. The difference among the groups was significant enough.(P<0.01) 10. By cognition of the number of graduate dental technician, the satisfactory degree of dental laboratory heads about all graduate dantal technician were too many group 2.86, many group 3.32. There was significant enough.(P<0.05) About woman graduate dental techician were too many group 2.60, many group 3.20 The difference among the groups was significant enough.(P<0.01) 11. As compared with the items ut of satisfaction and improvement about all dental technician who graduated from junior college, the rate of satisfaction item was for as follow : dental technological theory is 5.21%, ability of adaptation and sincerity each 17.1%. The rate of improvement items was as follow : sincerity is 39%, ability of work and ability of basical work each 24.4%. 12. As compared with the items out of satisfaction and improvement about woman dental laboratory technician who graduated from junior college, the rate of satisfaction item was as follow : atmosphere of the office is 56.1%, sincerity 22%. The rate of improvement items was as follow : ability of adaptation is 36.6%, ability of work 31.7%.

• 한국산학기술학회논문지
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• 제14권6호
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• pp.2889-2897
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• 2013

본 연구는 치과기공사의 개인역량과 조직몰입 정도를 분석하고 그 상관관계를 알아보기 위해 서울시, 경기도, 충남지역의 치과기공사 200명을 선정하고 자기 기입식 설문지를 이용하여 2012년 4월 28일부터 5월 25일까지 조사를 실시하였다. 연구도구는 신뢰성과 타당성이 입증된 설문지를 사용하였으며, 대상자의 일반적 특성, 개인역량, 조직몰입도 등 총 46문항으로 작성하였다. 수집된 자료의 분석은 SPSS ver 18.0 프로그램을 이용하였으며, 분석기법으로는 빈도와 백분율, T-test, F-test 등의 통계기법을 사용하여 분석하였다. 수집된 자료의 분석결과 연구대상자의 개인역량은 연령, 결혼상태, 근무지, 경력, 담당직위, 최종학력 항목에서 유의한 차이가 있었다(p<0.05). 개인역량 평균은 3.68로 높게 나타났다. 연구대상자의 조직몰입 정도를 분석한 결과 성별, 연령, 결혼상태, 근무지, 경력, 담당직위, 최종학력 항목에서 유의한 차이가 있었으며(p<0.05), 조직몰입도의 평균은 3.46으로 높게 나타났다. 개인역량과 조직몰입도의 상관관계는 높은 정(+)상관관계를 보였고, 대부분의 변수가 상관관계가 있는 것으로 나타났다. 이상의 결과를 종합할 때, 치과기공사의 개인역량은 직무성과인 조직몰입과 관련이 있는 것을 알 수 있었다.

• 한국산업융합학회 논문집
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• 제20권2호
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• pp.169-176
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• 2017

Dental implants are required to have biomechanical functions and biostability in order to perform authoring, pronunciation, and aesthetic functions in the oral cavity. In terms of biostability, pure titanium for medical have good biostability and no rejection in the alveolar bone. with appropriate strength in terms of strength as well as biocompatibility. In recent years, various surgical methods and devices have been developed to improve the convenience and safety of the procedure. However, as the number of procedures increases, the screw loosening of the abutment screw connecting the artificial root and the abutment There are many reports of artificial root and abutment fracture. Fig. 1 is an example of a case where the upper part of the abutment screw is arbitrarily modified to remove the abutment by the abutment fracture due to the loosening of the abutment screw. The fundamental cause of abduction of the abutment screw is caused by the slight movement due to the lowering of the retention force of the abutment screw. It is necessary to minimize loosening of the abutment screw to avoid problems such as fracture during the period of using the implant. The purpose of this study is to investigate the structure of the abutment screw to prevent the loosening of the abutment screw by forming 0.5mm slot.

• 대한치과기공학회지
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• 제38권1호
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• pp.23-36
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• 2016

Purpose: The purpose of this study is to suggest direction for dental technicians and management of dental laboratories to contribute to the improvement of oral health of citizens with high-quality dental prosthesis by researching operational status and management satisfaction of dental laboratories. Methods: In order to investigate operational status and management satisfaction of dental laboratories, this study conducted a questionnaire survey by mailing questionnaires to heads of dental laboratories designated as clinical training workshops of Department of Dental Technology of G University and a total of 158 questionnaires were used for analysis. Results: As for gender, males were 142 persons (89.9%) and females were 16 persons (10.1%). For location of the laboratories, number of laboratories in metropolitan cities was 94 (59.5%) while small and that in mid-sized cities was 64 (40.5%). As for the satisfaction with job, those who have managed dental laboratories for 23-30 years ($1.92{\pm}77$), transact with 7-12 dental clinics ($1.70{\pm}75$), had monthly income of 4-8 million won ($1.74{\pm}.80$) and had 8-10 employees ($2.33{\pm}.68$) were the highest in their satisfaction. As for satisfaction with management, those who have managed their business for 15-20 years ($2.86{\pm}.52$), transact with more than 20 dental clinics ($2.00{\pm}.04$), had monthly income of less than 4 million won ($2.00{\pm}.85$) and had less than 3 employees ($2.00{\pm}.62$) were the highest in their satisfaction. As for monthly income, those with less than 2 million won were 24 persons (15.2%), 2-4 million were 64 persons (40.5%), 4-6 million were 40 (25.3%), 6-8 million were 14 (8.9%) and over 8 million won were 16 persons (10.2%). As for number of employees, those with less than 3 employees were 32perosns (20.3%), 4-7 were 82 (51.9%), 8-10 were 26 (16.5%) and more than 11 were 10 persons (6.3%). As for severance payment, 84 persons practiced it according to Labor Standard Act (53.2%) and 34 practice it to a proper degree (21.5%) while 20 did not practice it at all (12.7%) and 20 persons did not respond to the question (12.7%). Conclusion: Although dental laboratories have rapidly expanded in number from 473 in 1986 to 2,400 in 2015, dental technician circles are facing difficulty in their management due to fierce competition and low profitability. Therefore, in order to improve this problem, it is necessary to readjust prices for dental prosthesis to realistic ones.