• Journal of Korean society of Dental Hygiene
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• v.15 no.1
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• pp.19-29
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• 2015

Objectives: The purpose of the study is to investigate the related factors to dental care utilization, oral health behaviors, and oral health status in immigrant workers in Korea. Methods: The subjects were 504 foreign immigrant male workers over 20 years old who visited Daegu labor consultation center for oral health survey and oral examination. The questionnaire included 5 questions of socioeconomic characteristics, 8 questions of oral health practice behavior, 6 questions of dental clinic visit, 8 questions of social relations and Korean language proficiency. The question for health behavior was measure by body mass index(BMI). Social relations and Korean language proficiency instrument was modified by Seol from "Family welfare survey in Korean international marriage" and scored by Liker 5 scale. Results: The oral health examination of the immigrant workers was as follows: decayed teeth - 76.6%, filling teeth - 27.4%, missing teeth - 69.8%, dental caries experience above five or more - 60.2%, periodontal pocket tissues - 58.9%. Simplified Oral Hygiene Index was very poor and accounted for 49.0%. Dental care utilization experience was closely associated with social relation indexes including attendance in family events, household stuff help, financial help and counseling for hard work(p<0.01). Dental care utilization experience proportionally increased with proficiency in Korean literacy including speaking, listening, and writing abilities of Korean language(p<0.01). Conclusions: In order to improve the oral health condition of the immigrant workers, it is important to provide social network, Korean language proficiency support, and health insurance coverage through economic burden reduction by the Korean government.

• Journal of Adhesion and Interface
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• v.14 no.1
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• pp.13-20
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• 2013

Palladium plays a pivotal role in the production of dental and medicinal devices, medicinal substances, jewellery, automobile and high-performance adhesives. Despite the frequent and fruitful use of such reactions, one major setback is the high level of palladium in the resultant compounds which can harm the human body. Among the palladium species, $PdCl_2$ is the most toxic. As a consequence it is desirable to detect the $Pd^{2+}$ cations by fluorescence spectra because it can provide an operationally simple and cost-effective detection method together with high sensitivity and selectivity. Herein, an ${\alpha}$-carbonyl substituted pyrene derivative, ${\gamma}$-oxo-1-pyrenebutyric acid (OPBA), was demonstrated to be a highly sensitive and selective fluorescent probe for $Pd^{2+}$ among the metal cations examined in aqueous solutions.

• The Journal of Korea Assosiation for Disability and Oral Health
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• v.10 no.1
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• pp.9-21
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• 2014

This study aims to help utilize the dental treatment institutions for the disabled and provide high quality of medical services in the future by identifying the satisfaction factors for the patients of the dental clinics for the disabled. As a study method, surveys were completed 200 patients who visited the dental hospital for the disabled. Among these, the surveys from 187 patients were statistically analyzed. The main findings of this study are as follow. Since the study showed that there were differences in the satisfaction factors between the disabled and non-disabled people, subsequent studies needs to be done to develop measuring tools to accurately accommodate the satisfaction factors of the disabled. In addition, as the low spatial accessibility in terms of distance and location was found in this study, more dental treatment institutions for the disabled are required. In the meantime, the survey results found that the most satisfactory aspect was the lower treatment cost compared to other clinics, and that the most important factor when choosing a clinic was also treatment. In addition, given the fact that the group that took a prosthetic treatment, which was non-insured treatment, showed higher satisfaction compared to the group that did not, it suggests that the economic burden plays an important role for the dental treatment of the disabled.

• Journal of dental hygiene science
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• v.7 no.3
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• pp.201-205
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• 2007

This study was designed to compare the perception of dental hygiene students and general public with respect to minor variations in maxillary anterior tooth size, alignment and their relation to the surrounding soft tissues. Maxillary anterior teeth were intentionally diagrammed in varying degree of deviation with respect to one of three common anterior esthetic discrepancies including variations in crown length, shape of gingival margin, and length of interproximal contact. Seventeen images were generated to be preferentially selected by 2 groups consisting of dental hygiene students and lay people in Busan(total of 216). The obtained results were as follows; 1. Both group preferred gingival margin of lateral incisor to be 0.5mm lower than that of central incisor. 2. Both group preferred the gingival margin shape of central incisor has 1/9 horizontal component of the crown width. 3. Both group preferred length of the interproximal contact has 1/2 of the crown length. The results of this study may be considered to influence the decision making process by dental professionals with respect to designing the anterior esthetic gingival line.

• The Journal of the Korea Contents Association
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• v.21 no.12
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• pp.697-704
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• 2021

This study was conducted to provide data for the development of foods suitable for the level of oral health by analyzing the consumption of elderly-friendly foods according to the oral health status of the elderly. Using data from the health questionnaire, oral examination, and nutrition survey of the 7th National Health and Nutrition Examination Survey, the oral health status and nutritional intake status of the elderly by each stage of elderly-friendly foods were analyzed, and a complex sample analysis method was applied. The elderly who mainly consume stage 3 elderly-friendly foods appear to have very poor oral health and nutritional status. Therefore, when developing elderly-friendly foods, it is necessary to develop various foods and provide systematic education considering the oral health status of the elderly and appropriate nutrients.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.2
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• pp.343-350
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• 2016

To prepare a method for improving the oral health-related quality of life for Chinese foreign students by examining the oral health care behavior affecting the oral health-related quality of life, a self-administered survey was conducted with 236 Chinese foreign students at an university located in Jeonbuk during April 2 -May 5, 2013. The results showed that 65.3% had not visited the dentist within one year, 82.6% had not received scaling within one year, and 68.2% had not received oral health education. In regards to the OHIP-14 according to the general characteristics, there was a significant difference in the school year, health insurance enrollment status and overseas study life satisfaction (p<0.05). In regards to the OHIP-14 according to the oral health care behavior, there was a significant difference in the subjective oral health condition, the experience of having visited a dentist within one year and an experience of having received scaling (p<0.05). As for the influencing factors on the oral health-related quality of life, they were found to be the subjective oral health condition and the experience of having received scaling within one year (p<0.05). For the purpose of helping Chinese foreign students to conveniently use medical institutions when oral health-related problems arise, there is a need for a translated version of the guidebook in their native language, the availability of medical professional interpreters, the availability of a university level oral health service center, and practical oral health education to enhance oral health.

• Journal of Korean society of Dental Hygiene
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• v.17 no.5
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• pp.921-930
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• 2017

Objectives: The purposes of this study were to analyze the trade newspapers related to 'recognition of the dental hygienist as the healthcare professional' using R program and to identify opinions of groups concerned with dental hygienists. Methods: This study was designed with contents analysis and cross-sectional. The subjects of the study were the articles for the last three years in medical and dental newspapers about the recognition of the dental hygienist as the healthcare professional. The collected articles were categorized and classified for each group's opinions about the issue. The key words were extracted according to the priorities of the opinions of agreement and disagreement. They were visualized after frequency analysis using R, a big data analysis program. Results: A total of 237 newspaper articles were extracted among 270 ones containing opinions. 245 were positive opinions and 25 were negatives. The main key words of the agreement were 'Amendment of Medical Law', 'Medical Practice', and 'Legal Guarantee of the Practice'. Advocates addressed that the issues should be resolved with the amendment of the law, as dental hygienists are not guaranteed to work based on the current law although they are actually doing the medical practices. Main key words of disagreement were 'Legal Guarantee of the Practice', 'Revision of Medical Technician Law', and 'Review of Job Type'. They described that the problem can be resolved by revising medical technicians act, and it needs to consider as job types of all healthcare professional. Conclusions: In the group who showed the positive opinions, it is possible to utilize measures such as promoting the cooperation of dental hygienists and developing public consensus through publicity.

• The Journal of Korean Academy of Prosthodontics
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• v.60 no.2
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• pp.143-151
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• 2022

Purpose. The purpose of this study was to evaluate the performance efficiency of two different drill combinations according to the heat generated and drilling time. Materials and methods. In this study, cow ribs were used as research materials. To test the specimen, cow bones were rid of fascia and muscles, and a temperature sensor was mounted around the drilling area. The experimental group was divided into a group using a guide drill and a group using a Lindmann drill according to the drill used before the initial drilling. The drilling sequence of the guide drilling group is as follows; guide drill (ø 2.25), initial drill (ø 2.25), twist drill (ø 2.80), and twist drill (ø 3.20). The drilling sequence of the Lindmann drilling group is as follows; Lindmann drill (ø 2.10), initial drill (ø 2.25), twist drill (ø 2.80), and twist drill (ø 3.20). The temperature was measured after drilling. For statistical analysis, the difference between the groups was analyzed using the Mann-Whitney U test and the Friedman test was used (α = .05). Results. The average performance efficiency for each specimen of guide drilling group ranged from 0.3861 to 1.1385 mm³/s and that of Lindmann drilling group ranged from 0.1700 to 0.4199 mm³/s. The two drill combinations contained a guide drill and Lindmann drill as their first drills. The combination using the guide drill demonstrated excellent performance efficiency when calculated using the drilling time (P < .001). Conclusion. Since the guide drill group showed better performance efficiency than the Lindmann drill group, the use of the guide drill was more suitable for the primary drilling process.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.05a
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• pp.407-410
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• 2006

방대한 양의 다양한 데이터들이 발생되는 의료분야에서는 임상데이터를 기반으로 보다 정확하고 효율적으로 현상을 분석/판단하여 의사가 환자진료 시 정확한 진단과 치료를 수행할 수 있도록 보조해주는 적절한 의사결정지원시스템이 요구되고 있다. 따라서, 이와 같은 요구를 충족시키기 위해서는 다종 다양한 데이터로부터 간결하면서도 효과적으로 개념들을 추출하고 구조화하여 개념계층구조로 표현할 수 있어야 하며, 실세계의 데이터에 대한 구조화와 요약을 제공하고 필요한 정보를 수월하게 접근할 수 있어야 한다. 본 연구에서는, 도메인 내의 다양한 데이터들로부터 개념들을 추출하고, 개념들 사이의 상하위 관계를 파악하여 개념계층구조를 구축하기위한 정형화된 데이터분석기법으로서 형식개념분석기법(Formal Concept Analysis)을 소개하고, 이를 치과 교정학 분야의 환자 임상데이터 분석기법(Cephalometric Analysis)에 융합한 형태의 임상의사결정지원시스템 개발 및 향후 연구과제 등에 관해 설명한다.

• Journal of the Korean Institute of Telematics and Electronics
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• v.22 no.2
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• pp.55-59
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• 1985

The measurement of the silent period of Masseter muscle is very useful diagnostic method of TMJ syndrome. In this paper, we design a very convenient and very low-priced medical instrument for dental research which does not need gain control to each patient for measuring the silent period and the data processing time is very short. The result of SP measurement using this instrument is 20-30ms in normal subjects and about 60ms in TMJ patient, and the data processing time is 0.5 second.