• Journal of dental hygiene science
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• v.10 no.4
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• pp.241-250
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• 2010

The purpose of this study, which was processed from March $22^{nd}$ to April $9^{th}$ of 2010, was to figure out recognition, well-formed instructions, and Practical application about dental hygiene devices based on the dental health characteristics of 350 adults who dwell in Busan and Gyeongnam regions. Also, this study recommended the adults to use dental hygiene devices and provided such devices to help individuals take care of their dental health at home. The collected data was statistically processed with a statistics SPSS (Statistical Packages for Social Science 14.0. SPSS Inc. USA) program. First of all, in order to demonstrate the characteristics of the sample population statistics and that of the descriptive data, frequency analysis was performed and to find out the relationship between variations of the dental health, Chi-squared test through Crosstabs was operated. According to the study, recognition and Practical application of dental hygiene devices were very low. Therefore, public announcement about necessity and effectiveness of such devices should be reinforced nationwide and instructions on choosing the right device and using of the dental hygiene devices based on patients' conditions by dental hygienic human efforts gathered from dental health organization should be carried out.

• Journal of Korean society of Dental Hygiene
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• v.10 no.1
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• pp.33-49
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• 2010

Obiectives : The purpose of this study was to develop PBL packages geared toward improving the problem-solving abilities, self-directed learning capabilities and communicative competency of dental hygienists, which were all required for dental hygienists to have in the dental field. Methods : After three PBL packages for a semester of oral health education were developed, the PBL packages were evaluated by an expert to determine what improvements should be made. Results : The findings of the study were as follows. The three PBL packages were based on real clinical situations and designed to have a different degree of difficulty and provide problems in the form of scenario for learners to solve in a self-directed manner. When the packages were assessed by an expert, the packages were expected to make a contribution to the improvement of the three different abilities on which this study focused, and the packages were found to be appropriate in general in terms of learning content and field applicability, though they needed some modifications. Thus, this study attempted to develop PBL packages and let an expert assess the packages in order to give some suggestions about the development of PBL packages. The packages developed in this study are expected to help boost the problem-solving abilities, self-directed learning capabilities and communicative competency of dental hygienists, which should all be possessed by dental hygienists in the dental field. Moreover, the packages were found to be conducive to the introduction of PBL in the field of dental hygiene. Conclusions : To ensure the successful application of the packages, dental hygiene students should be provided with the packages in situations similar to real clinical situations, and they should have an opportunity to practice dental hygiene duties.

• Imaging Science in Dentistry
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• v.46 no.3
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• pp.173-178
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• 2016

Purpose: Optical coherence tomography (OCT) has been investigated as a novel diagnostic imaging tool. The utilisation of this equipment has been evaluated through several studies in the field of dentistry. The aim of this preliminary study was to determine through basic experiments the effectiveness of OCT in implant dentistry. Materials and Methods: To assess detection ability, we captured OCT images of implants in each of the following situations: (1) implants covered with mucosae of various thicknesses that were harvested from the mandibles of pigs; (2) implants installed in the mandibles of pigs; and (3) implants with abutments and crowns fixed with temporary cement. The OCT images were captured before cementation, after cementation, and after removing the excess submucosal cement. Results: If the thickness of the mucosa covering the implant body was less than 1 mm, the images of the implants were clearly detected by OCT. In the implants were installed in pigs' mandibles, it was difficult to capture clear images of the implant and alveolar bone in most of the samples. Remnants of excess cement around the implants were visible in most samples that had a mucosa thickness of less than 3 mm. Conclusion: Currently, OCT imaging of implants is limited. Cement remnants at the submucosal area can be detected in some cases, which can be helpful in preventing peri-implant diseases. Still, though there are some restrictions to its application, OCT could have potential as an effective diagnostic instrument in the field of implant dentistry as well.

• Korean Journal of Computational Design and Engineering
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• v.16 no.3
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• pp.216-226
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• 2011

Surgeon dentists usually rely on their experiential judgments from patients' oral plaster casts and medical images to determine the positional and directional information of implant fixtures and to perform drilling tasks during dental implant surgical operations. This approach, however, may cause some errors and deteriorate the quality of dental implants. Computer-aided methods have been introduced as supportive tools to alleviate the shortcomings of the conventional approach. In this paper, we present an approach of 3D dental implant simulation which can provide the realistic and immersive experience of dental implant information. The dental implant information is primarily composed of several kinds of 3D mesh models obtained as follows. Firstly, we construct 3D mesh models of jawbones, teeth and nerve curves from the patient's dental images using software $Mimics^{TM}$. Secondly, we construct 3D mesh models of gingival regions from the patient's oral impression using a reverse engineering technique. Thirdly, we select suitable types of implant fixtures from fixture database and determine the positions and directions of the fixtures by using the 3D mesh models and the dental images with software $Simplant^{TM}$. Fourthly, from the geometric and/or directional information of the jawbones, the gingival regions, the teeth and the fixtures, we construct the 3D models of surgical guide stents which are crucial to perform the drilling operations with ease and accuracy. In the application phase, the dental implant information is combined with the tangible interface device to accomplish 3D dental implant simulation. The user can see and touch the 3D models related with dental implant surgery. Furthermore, the user can experience drilling paths to make holes where fixtures are implanted. A preliminary user study shows that the presented approach can be used to provide dental students with good educational contents. With future work, we expect that it can be utilized for clinical studies of dental implant surgery.

• Journal of Korean Dental Science
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• v.10 no.1
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• pp.35-44
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• 2017

In case of loss of many teeth due to dental caries or periodontal disease, improvement of masticatory function and aesthetics can be obtained through implant treatment. However, if the patient does not have a normal intercondylar relationship, it is difficult to achieve an ideal occlusal relationship with only prosthetic treatment. In particular, oral reconstruction with orthodontic treatment or orthognathic surgery is necessary for patients with mandibular prognathism. However, if the posterior occlusion collapses due to severe caries or periodontal disease, orthognathic surgery may be difficult. The occlusal vertical stop is very important for the stability of the mandibular position during occlusal reconstruction through orthognathic surgery. The patient in this case had posterior occlusion collapsed due to the caries of a large number of posterior teeth, and showed mandibular prognathism and long face. We planned a full arch restoration with orthognathic surgery and extracted the hopeless teeth. To secure the vertical stop required for orthognathic surgery, the implant was placed before surgery. After the orthognathic surgery and the final prosthesis application, the results were satisfactory for the improvement of the aesthetics and the restoration of the masticatory function.

• Journal of Korean society of Dental Hygiene
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• v.21 no.4
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• pp.427-440
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• 2021

Objectives: We classified items required for dental hygienists' ethics training by domains. We administered a survey on experts using the Delphi method to collect opinions for guiding future trainings. Methods: 33 participants were selected and analyzed using the Delphi method thrice. Results: For relationships with patients, the item "1.3.1.1 I can keep the confidentiality of the information obtained from patients, including mature minors, related to their specific disease and treatment during medical care as well as other personal information of the patients." had the highest mean value (mean=4.88). For medical and social relations, "2.3.2.2 I can understand how staff provide dental services as a team and explain a dental hygienist's roles and responsibilities that enable a team to function effectively." had the highest mean value (mean=4.85). For individual specialized fields, "3.1.1.1 I can explain the roles and responsibilities in public health of individuals, the public, the state and professional dental hygienist." showed the highest mean value (mean=4.82). Conclusions: We identified 3 categories, 14 sub-categories, and 53 items on the scope of training and standards for ethical competencies for practical applications in professional ethics training of dental hygienists.

• Journal of Korean society of Dental Hygiene
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• v.22 no.3
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• pp.189-197
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• 2022

Objectives: The purpose of this study was to investigate the level of systemic disease-related knowledge among dental hygienists and analyze the effect on their job performance, empowerment, and satisfaction to provide basic data for expanding education on systemic diseases among dental hygienists and improving their job performance, empowerment and satisfaction. Methods: A survey was conducted among dental hygienists working in Busan and Gyeongsangnam-do region, South Korea, from October 27 to November 10, 2020, with a total of 245 questionnaires included in the final analysis. Results: Results of analysis revealed an average score for systemic disease-related knowledge among dental hygienists of 16.53±3.33 points and the higher the systemic disease-related knowledge, the higher the job performance, empowerment, and satisfaction. The higher the coronary artery disease knowledge and respiratory and infectious disease knowledge, the higher the job performance, and the higher the respiratory and infectious disease knowledge, the higher the job empowerment and job satisfaction. Conclusions: This study revealed that the higher dental hygienists' level of systemic disease-related knowledge, the higher their job performance, empowerment, and satisfaction. Therefore, this study suggests that dental hygienists' education on systemic disease-related knowledge should be expanded, and diverse systemic disease education programs should be developed for application in clinical practice.

• Journal of dental hygiene science
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• v.9 no.1
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• pp.43-52
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• 2009

The realistic problem about the dental hygiene education in our country is what the correlation between theoretical education and clinical education is short, and what the systematically clinical-practice education is failing to be realized. In order to solve this problem, the aim is to introduce preceptor and to present necessity in order to apply preceptor to the practice education for dental hygiene department. 1. What is the largest in the difference between the observation experience and the performance experience by element in clinical-performance activity is the patience-care service sphere(P < .001). 2. A hospital with the highest observation-practice experience level in children with the observation experience by hospital was in order of K hospital, Y hospital, H hospital, B hospital, and A hospital(P < .001, P < .01). 3. A hospital was the highest in the difference of the performance-practice experience level by hospital. And, the next was in order of H hospital, Y hospital, K hospital, and B hospital(P < .001, P < .01). 4. As for recognition on importance of clinical-practice activity in dental hygienists, the dental hygienists with more than the third year were indicated to be the highest than the dental hygienists with less than the 3rd year among 58 dental hygienists. Given seeing the results of this study, the more systematic and educational clinical-practice environment will need to be improved by suggesting a role of preceptor and to seek for a plan for application in the clinical-practice education.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.23 no.2
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• pp.137-143
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• 2001

The effect of topical heparin application and vascular freezing on thrombosis was evaluated in the femoral vein of rabbits. The femoral veins were crushed, incised transversely and treated by 4 different ways; 1) group 1, heparin treated only, 2) group 2, frozen only, 3) group 3, heparin treated and frozen, 4) group 4, treated with saline as control. The patency was evaluated by empty-and-refill test and thrombus formation was judged by stereoscopic and SEM observation. The results obtained were as follows: 1. Thirty minutes after suture, the patency was more improved in the three groups than the control, but there was no significant difference among groups. 2. Three days after suture, the patency was more improved in the three groups than the control, and was prominent in group 1 and group 3 (P<0.05). 3. Significantly reduced thrombus could be seen in most case of group 3. These results suggest that topical application of heparin and vascular freezing is effective in reducing thrombus formation in microsurgery of vein.

• International Journal of Computer Science & Network Security
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• v.22 no.10
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• pp.97-106
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• 2022

Objective. Nanotechnology is spreading among all areas of life, from everyday devices to medicine. The concept of nanotechnology argues that not only can new physical and chemical properties of materials be discovered, but also the new potential of nanostructures when reduced to the nanoscale. The growing interest in the application of nanomaterials in dentistry contributes to the proliferation of the range of nanomaterials used by specialists. The purpose of this review of information sources was to analyze the prospects for the use of nanomaterials in dentistry. Methods. We used the bibliographic semantic method of research, for which we analyzed electronic databases of primary literature sources Scopus, Web of Science, Research Gate, PubMed, MDPI, and MedLine. English-language scientific articles published after 2017 were taken into consideration. Results. According to the results of a search study among modern information primary sources, nanotechnology improves the preventive properties of oral care products, improves the structural-mechanical and aesthetic properties of composite mixtures for dentistry, overcomes the problems of the clinical application of dental implants. Despite the prospects of nanotechnology applications in medicine in general and dentistry in particular, the existing economic and technological problems require a thorough solution for further implementation of nanostructures. Scientific novelty. For the first time, the analysis of modern trends in the application of nanotechnology in dentistry is carried out and the peculiarities of materials are highlighted, the problems and prospects of nanostructures implementation in modern dental implantology are given, physical, chemical, mechanical, and antibacterial properties of nanomaterials are evaluated. The effect of nanomaterials on the microbial adhesion of the tooth or implant surface is described. Practical significance. The presented publication can become a scientific basis for the solution of urgent problems hindering the introduction of nanotechnology into dental practice. Conclusions. Thus, the use of nanostructures opens up great opportunities for the treatment of a wide range of diseases, not only of dental nature but also in medicine in general.