• 한국치위생학회지
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• 제11권4호
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• pp.571-580
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• 2011

Objectives : This study focused on examine the relevance between behavioral changes of customers and re-use intention on medical institution after experiencing infection control through external stimuli. Methods : This research was based on self-standing survey conducted from August to November 2010, 214 people who randomly selected from five dental clinics located in Busan were analyzed as the final group. Collected data were performed using SPSS 12.0 for Window. Results : 1. 82.8% of those surveyed who experienced external stimulation have changed their behavior on hospital environments and facilities, and 80.5% of them answered the stimuli influenced their re-use intention on medical institution. 2. There were no significant differences between participants by general characteristics on 'The reason why medical team wear sanitary appliances'. In age group 30~39, 85.4% of participants chose the answer so the difference were statistically significant(p<.001). Result by household income showed significant difference in group over $1,000 to $2,000 as 82.7% response(p<.05). 3. 94.4% of participants chose 'Required' for both surgical suits and gloves in research of 'The necessity level of personal sanitary appliances' which medical teams wear for treatment and 79.4% agreed that medical teams need to change their medical gloves whenever treating each patients. 4. The survey revealed that the most important appliance in patient's awareness were surgical gloves and protective goggles has chosen as the least important one. Conclusions : Patients as medical consumer were highly noticed of importance of the infection control in dental clinic and necessity of personal sanitary appliances. The patients who has accessed dental infection control information by external stimuli in advance showed objectival changes of their visit and behavioral changes with bringing medical environments together. This aspects influenced those patient's re-use intention in conclusion.

• 턱관절균형의학회지
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• 제4권1호
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• pp.1-4
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• 2014

Objectives: Intraoral appliances (IOA) are applied in the clinical practice of Korean medicine to improve the balance between yin and yang of the body such as temporomandibular joint balancing medicine. Historical examples of IOA were not well known. This study reports prototype IOA's described in medical classics. Methods: Several medical classics of 12th to 19th centuries were narratively reviewed for prototypical descriptions of IOA's in the context of clinical practice. Results: IOA's in the medical classics reviewed adopted such materials as bamboo, chopsticks, and coins that were adjusted in the height and were used as a temporary IOA's with response of the patient being monitored. IOA's were applied integratively with herbal medicine for diverse complaints such as pain, hearing problem, cough, asthma, and rhinorrhea. Conclusions: Prototype IOA's in the medical classics suggest an individualized, integrative, and holistic principle and usage of IOA's in the tradition of Korean medicine.

• 산업기술연구
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• 제24권A호
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• pp.83-90
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• 2004

Generally, electronic appliances are used on the basis of normal power source supply. The power source inevitably includes the abnormal condition, such as, sudden voltage sagging, power interrupt, and induced noises. As the electronic appliances which include micro-controller-based circuits are being increased recently, the controller circuit sometimes malfunctions by the abnormal condition of the power source. This situation causes serious problems such as hitch of electric appliance, fire and medical instrument glitch, which produces serious situations. In this paper, development of power interrupt tester which is highly suitable for an endurance test device under abnormal power source to microprocessor-based circuits is proposed 89C2051 microcontroller is performed to make power interrupt signal, and software controls peripheral hardwares and built-in functions. Experimental results of this study will offer a good application to electronic appliance maker as a test device of hardware and software debugging use.

• Journal of Microbiology
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• 제43권3호
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• pp.260-265
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• 2005

The objective of this study was to detect and compare the presence of periodontopathogens in the subgingival plaques of gingivitis lesions in adults who wore fixed orthodontic appliances, as opposed to adults who did not wear any orthodontic appliances. Thirty-six individuals participated in this study. Ninteen of these subjects did not wear any orthodontic appliances, and these subjects comprised the control group. The other 17 individuals had been wearing fixed orthodontic appliances for at least 3 months each. After a periodontal examination, we collected subgingival plaque samples from the gingivitis lesions of each patient. Using PCR based on 168 rDNA, we detected the presence of 6 putative periodontopathogenic species, Treponema denticola, Porphyromonas gingivalis, Tannerella forsythia (formerly Bacteroides forsythus), Prevotella nigrescens, Prevotella intermedia, and Actinobacillus actinomycetemcomitans. With regard to the presence of individual periodontopathogens, we found that T. forsythia, T. denticola, and P. nigrescens were significantly more common in the samples obtained from the orthodontic patients than in the samples obtained from the non-orthodontic patient controls. Our results indicate that the local changes associated with the wearing of fixed orthodontic appliances may affect the prevalence of periodontopathogens in subgingival dental plaques.

• Imaging Science in Dentistry
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• 제51권1호
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• pp.63-71
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• 2021

Purpose: The aim of this study was to assess the artefacts of 12 fixed orthodontic appliances in magnetic resonance images obtained using 1.5-T and 3-T scanners, and to evaluate different imaging sequences designed to suppress metal artefacts. Materials and Methods: In vitro, study casts of 1 adult with normal occlusion were used. Twelve orthodontic appliances were attached to the study casts and scanned. Turbo spin echo (TSE), TSE with high readout bandwidth, and TSE with view angle tilting and slice encoding for metal artefact correction were used to suppress metal artefacts. Artefacts were measured. In vivo, 6 appliances were scanned: 1) conventional stainless-steel brackets; 2) nickelfree brackets; 3) titanium brackets; 4) a Herbst appliance; 5) a fixed retainer; and 6) a rapid maxillary expander. The maxilla, mandible, nasopharynx, tongue, temporomandibular joints, and cranial base/eye globes were assessed. Scores of 0, 1, 2, and 3 indicated no artefacts and minor, moderate, and major artefacts, respectively. Results: In vitro, titanium brackets and the fixed retainer created minor artefacts. In vivo, titanium brackets caused minor artefacts. Conventional stainless-steel and nickel free brackets, the fixed retainer, and the rapid maxillary expander caused major artefacts in the maxilla and mandible. Conventional stainless-steel and nickel-free brackets caused major artefacts in the eye globe (3-T). TSE with high readout bandwidth reduced image artefacts in both scanners. Conclusion: Titanium brackets, the Herbst appliance, and the fixed retainer caused minor artefacts in images of neurocranial structures(1.5-T and 3-T) when using TSE with high readout bandwidth.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1995년도 춘계학술대회
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• pp.179-182
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• 1995

Although air, water, and noise pollutions have been widely recognized, electromagnetic forces(EMF) hazard has been rarely recognized as a pollution and very little studies has been done in this country. Thus, in this study electromagnetic forces radiated by various home appliances, once machines, and communication equipments were measured and so were several places radiating strong EMF such as subway stations and electric substations. Among the home appliances microwave oven senates lots of magnetic field and microwaves, and electric mattress does strong magnetic field. In video game room strong magnetic and considerable electric fields were measured. It was observed strong magnetic field inside of electric powered train and very strong magnetic and electric fields on some platforms. Hand-phone and car-phone radiate very hazardous level of microwaves to brain and that they rapidly come into wide use. In this study data base for various electric machines and places radiating strong EMFs were constructed and could be used for future epidemiological studies.

• 대한소아치과학회지
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• 제42권1호
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• pp.45-52
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• 2015

본 연구의 목적은 3급 부정교합 환자에서 facemask를 이용한 악정형치료 시, 고정원으로 사용하기 위해 장착되는 구내 장치의 종류에 따른 효과를 비교하는 것이다. 3급 부정교합 환자 18명을 대상으로 악정형치료를 평균 12개월 동안 시행하였으며, 이 중 9명은 구내 장치로 bonded expander를, 9명은 Hyrax를 사용하였다. 치료 시작 전, 그리고 치료 직후에 측면 두부방사선사진을 촬영하여 비교 분석하였다. 또한 고정원 소실 정도를 조사하고, 장치에 따른 차이를 비교하였다. 악정형치료 효과에서는 두 군 모두 뚜렷한 개선을 보였고, 군간의 유의한 차이는 없었다. 각 구내 장치 모두 어느 정도의 고정원 소실량은 존재하였지만 군간의 차이는 없었다. Facemask는 성장기 3급 부정교합 환자의 치료에 있어서 효과적인 치료 방법이며, 구내 장치로 사용된 bonded expander와 Hyrax 간에 유의한 차이는 없었다.

• 대한치과교정학회지
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• 제43권1호
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• pp.29-34
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• 2013

Objective: To examine the prophylactic potential of 3 orthodontic bonding adhesives: Fuji Ortho SC, Illuminate, and Resilience. Methods: Thirty-six Wistar Wag rats were randomly divided into 4 groups consisting of 9 rats each. One of the groups received no treatment and was used as a control. In the other groups, individual bands coated with one of the 3 adhesives were cemented to the lower incisors. Enamel samples were obtained after 6 and 12 weeks and analyzed using scanning electron microscopy in combination with energy dispersive spectrometry. Results: Six weeks after band cementation, no fluoride was found in the enamel of the lower incisors. After 12 weeks, there was no fluoride in the enamel of teeth coated with the Resilience composite. However, in the case of the Illuminate composite and the resin-modified glass ionomer Fuji Ortho SC cement, the depth of fluoride penetration reached $2{\mu}m$ and $4.8-5.7{\mu}m$, respectively. Conclusions: Fluoride ions from orthodontic adhesives can be incorporated into the surface layer of the enamel. Orthodontists may apply orthodontic adhesives, such as the Fuji Ortho SC, to reduce the occurrence of caries during orthodontic treatment with fixed appliances.

• 대한물리치료과학회지
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• 제10권2호
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• pp.246-257
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• 2003

Even though the automation of industrial machinery has dramatically increased, most industries still require human hands for the production of goods. Our hands are essential to our existence. For this reason, hand injuries caused by industrial accidents have become an important issue lately. Most hand injuries are external wounds and constitute 38.6% of disabling industrial accidents. This significant statistic cannot be ignored by rehabilitation programs. The rate of success in operations of finger and hand injuries has increased, but relatively less consideration has been given to physical therapy, rehabilitation, research, or systematic installment in terms of welfare, which would help the injured carry on the nominal life they lived before their injury. Therefore, it is necessary to study systematically all related aspects to provide patients with physical therapy, rehabilitation, and social welfare, in order to restore their social, professional, and economical capabilities. Physical considerations, functional usability, and cosmetic restoration, as well as the patients' mental state must be addressed. The results of the study shows several problems. Medical appliances, manpower, and the environment of the treatment rooms are very poor. The patients cannot receive treatment early enough nor enough treatment because of too many patients for too few physical therapists. Close cooperation between physical therapists and doctors, nurses, or related departments is lacking. Furthermore, it is irrational that industrial accident premiums for the exert; e treatment of hand injury patients are not itemized. Lack of recognition of the importance of specialty in hand injury therapists leads to the lack of professionalization of systematic hand injury treatment In order to solve these problems, the professonalism of physical therapy should be acknowledged and particular treatment courses should be available and/or required. Based on the understanding of the hand injury patients' needs, new theories of physical therapy should be developed and modem medical appliances and facilities should be available, in order to provide the patients with qualitative medical treatment, which then will facilitate the patients' recovery.

• 한국항행학회논문지
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• 제21권1호
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• pp.107-112
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• 2017

최근 가정이나 산업용 건물에서 컴퓨터, TV, 냉장고, LED 조명 등 가전기기들의 누전전류에 의한 감전사고가 지속적으로 발생하고 있다. 그리고 가정 내 벽면에 설치된 콘센트에 직접 연결되어 제어 하는 누전차단 모듈들은 모듈 후단에 병렬로 연결된 각각의 가전기기들의 누전상태를 확인하기가 쉽지 않다. 또한 전류가 정상적인 전류의 통로 이외로 흐르는 누전전류를 기존의 누전차단기들은 배전함에 설치되어 누전시 전원을 차단해 주는 역할 을 한다. 가전기기의 누전으로 인한 감전, 화재 등 여러 가지 재해가 발생하여 누전전류의 위험성이 심각하게 제시되고 있다. 이에 근거리 무선통신시스템 중에서 저전력과 저가격 면에서 장점이 많은 IEEE 80215.4 기반의 지그비통신을 이용하여 상시 감시할 수 있는 누전상태 모니터링시스템 구현방안을 제시한다.