• Journal of Institute of Control, Robotics and Systems
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• v.17 no.3
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• pp.254-257
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• 2011

This study was performed to development a dental three-dimensional laser scanning system and measure the accuracy of new adjustable lower dental impression trays. Multiple impressions of a resin master model were made with custom, stock and new adjustable trays and vinyl polysiloxane impression material. The lower master model and resulting cast were compared using an dental scanning system. Each 3D image was superimposed onto the lower master model image and analyzed with custom software. Multiple measurements of the lower master model and casts were analyzed to determine the accuracy of tray types.

• Journal of Korean society of Dental Hygiene
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• v.19 no.3
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• pp.343-350
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• 2019

This study focused on the status of dental care development for children and adolescents. In contrast to the chronic disease management project, this research intended to provide basic data for the expansion of the system. We summarized the status of the system's expansion since 2012. It analyzed research reports, papers, related literature and books on the system of children and adolescent dental care service. The literature analysis classifies year, publication, title and published location. The current state of the system is listed as location, target, support funds, etc. Implementation of the project was first discussed in 2007. Initial planning focused on the Oral Health Policy Research Society of the Gunchi. Effective measures were formulated in 2008 under the center of the Gunchi. It is time to discuss the dental care system's direction and development, as well as future aims based on a beneficial program of preventive care. A system of dentistry should be introduced to benefit the entire population.

• Current Optics and Photonics
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• v.7 no.3
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• pp.283-296
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• 2023

An intraoral spectral domain optical coherence tomography (SD-OCT) system has been developed, using a custom-built hand-held scanner and spectrometer. The hand-held OCT probe, based on a microelectromechanical systems scanner and a self-built miniaturized drive circuit, had a field of view sufficient for dental diagnosis. The spectrometer using a fabricated f-theta lens provided the image depth required for dental diagnosis. The axial and transverse resolutions of the OCT system in air were 7.5 ㎛ and 12 ㎛ respectively. The hand-held probe could scan an area of 10 × 10 mm², and the spectrometer could image along a depth of 2.5 mm. To verify the utility of the developed OCT system, OCT images of tooth hard and soft tissues were acquired, and a user-interface program for diagnosis was developed. Early caries and microcracks that were difficult to diagnose with existing methods could be found, and the state of restoration could be observed. Measuring the depth of the gingival sulcus, distinguishing subgingival calculus, and detecting an implant under the gingiva suggested the possibility of the SD-OCT system as a diagnostic for dental soft tissues. Through the presented OCT images, the capability of the developed SD-OCT system for dental diagnosis was demonstrated.

• Journal of Korean society of Dental Hygiene
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• v.21 no.5
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• pp.667-674
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• 2021

Objectives: This study aimed to enhance the role of dental hygienists by identifying perceptions of child abuse, attitude towards reporting obligations, and awareness of the reporting system, and providing basic data for early detection and reporting of child abuse reporting obligations. Methods: From 2021-06-20 to 2021-09-09, 156 dental hygienists working at dental clinics and hospitals in Gwangju and Jeollanam-do were surveyed. Statistical analyses were performed using t-tests, ANOVA, and Pearson's correlation analysis. Results: The points for awareness of child abuse, obligatory reporting attitude, and awareness of mandatory reporting system were found to be 3.52, 3.01, and 2.30, respectively. A significant positive correlation was observed between the negative attitude to report child abuse (r=0.332, p<0.01) and the perception of the mandatory reporting system (r=0.343, p<0.01). Conclusions: This study confirmed that various educational programs and research are needed for the early detection and reporting of child abuse by dental hygienists.

• Journal of Technologic Dentistry
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• v.13 no.1
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• pp.79-97
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• 1991

To improve the management of dental laboratory through the research on the actual condition, this study posed questions on 36 dental laboratories. The results are as follows : 1. The establishment of dental laboratory in Chunbuk was increased between in 1980 and 1986. Especially it has been more increased since 1989. According to the proportion of population the number of the dental laboratories in Chunbuk was much more than that of other provinces and took the first place in september 1990. 2. The ratio between the unlicensed dental technician and the licensed was 24.83% and 67.11% each . The former must be replaced by the licensed. And the latter ought to try to improve their culture and technique. 3. Overtime payment must be paid for those who work above eight hours. 4. It takes 5 days at a minimum for the production of dental prosthesis with both stability and esthetics. 5. Every Saturday afternoon, Sunday and national holiday must be free. 6. Bonus must be paid 600% a year at a minimum. The system of retirement allowance should be active. All dental technicians ought to be affliated with their labor union and medica insurance. 7. Such dental restoration as porcelain and crown and bridge prosthesis must by increased to a degree between 30% and 50% at a minimum and the reduction system of charge for a dental technique has to be abolished. 8. The general working conditions of dental laboratory, especially pay and working hour must be improved. 9. To advance the service improvement of dental treatment and the banishment of illegal one, the medical insurance of crown and bridge prosthesis must be generally practised. 10. Ill case of the staff cull:lloyulent of dental laboratory, minimem wage system must be observed. 11. Directing dentist system on the ertablisment of dental laboratory must be abelished or wholly improved.

• Journal of Technologic Dentistry
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• v.36 no.1
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• pp.27-37
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• 2014

Purpose: The purpose of this study is to investigate the improvement measure of dental technicians practical examination system. Methods: The subjects in this study were 290 dental technicians who were self-written questionnaire. The results were analyzed by SPSS 16.0. The collected data was analyzed by frequency and chi-square test. Results: Dental technician practical exam feasibility of survey were largely negative views. Articulators work required in practical exam as a tool used (28.7%), electric wax carver (19.5%), heating clear (17.8%), handpiece (16.2%) had a response. Dental Technician positions in accordance with practical exam in comparison to satisfaction, the professor is satisfied, but the clinical dental technicians were generally dissatisfied (p<0.05). Conclusion: Based on the results of this study, Current is necessary to analyze the practical test. It also should be compared with foreign institutions. Long-term and short-term improvement examination system that can be applied to the improvement of the dental technician to draw practical test it is necessary to improve the system.

• Journal of Korean society of Dental Hygiene
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• v.13 no.6
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• pp.909-916
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• 2013

Objectives : The purpose of this study was to investigate the perceptions of dental hygienists toward digital dentistry. Methods : The subjects were 393 dental hygienists in Daegu Gyeongbuk. A total of 380 data were analyzed except the incomplete questionnaires. Data were analyzed by descriptive statistics, chi-square test, t-test, one-way ANOVA using SPSS version 18.0. Results : 1. Difference of perception by general characteristics was affected by age, academic background, working career, and married. 2. Difference of perception by utilization of digital facilities was affected by digital camera, CAD/CAM system, oral scanner, and computer system. 3. Difference of perception by digital education experience and intention of participation was affected by stronger intention to participate in digital education and practical exercise. Digital X-ray system and CAD/CAM system were the must-be equipment in education. Conclusions : Utilization of digital dentistry is the motive for education experience in dental hygienists.

• The Journal of Korean Academy of Prosthodontics
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• v.39 no.4
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• pp.433-443
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• 2001

The aim of this study was to evaluate the dental specialty system from the viewpoint of korean constitution. An attempt to introduce a dental specialty system has been repeated many times, but it was interrupted by the dispute of the interested parties, especially general practice dentists, trained dentists and the authorites concerned. The korean constitutional court decided on July 16th 1998 that the lack of the examination to be a dental specialist was against the korean constitutional law and the authority concerned should prepare the legal procedure for the dental specialist examination in proper time. Though the dental specialty system may be discussed in a variety of view, it should be established on the ground of the korean constitutionalism. According to the korean constitution, all the people can develop their abilities at the maximum and have their dignity, preciousness and right to seek their happiness. With the view of spirits of the constitution, dental specialty system should be more open widely to those who want to be a specialist. It should be also allowed to the dental specialists that they reveal their specialty and creativity. However, the representatives of the korean dental association(KDA) decided at the 50th annual meeting that the dental specialists should not reveal or annonce their specialties at the first step of the dental care and all the present dentists give up to be specialists. As conclusion of this study the proposals of the KDA seems to be against the korean constitution and hardly fulfills the needs of the times.

• The Journal of the Korean dental association
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• v.16 no.11 s.114
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• pp.861-866
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• 1978

Study on the dental educational systems in New-Zealand. The following results was obtained. 1. Dental faculty system was 5 years course, only one school, Faculty of Dentistry University of Otago in Dunedin, New-Zealand. one class was 40 students. 2. Dental nursing school system was 2 years course and 3 dental nursing school in New-Zealand. (Auckland, Wellington, Christchurch) One class was each 30 students.

• The Journal of the Korean dental association
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• v.31 no.4 s.287
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• pp.268-273
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• 1993