글레이징처리한 도재와 연마한 도재의 표면조도에 관한 연구

최미라,정헌영,이선형,양재호,Choi, Mee-Ra,Chung, Hun-Young,Lee, Sun-Hyeong,Yang, Jae-Ho 대한치과보철학회 1998 대한치과보철학회지 Vol.36 No.4

Porcelain is considered to be one of the materials of choice for restoration where esthetics is of concern. But porcelain surface without final glazing treatment may induce undesirable results such as inflammatory response on adjacent soft tissues due to plaque accumulation and increased wear of opposing teeth. Therefore, rough porcelain surface must be smoothened by final glazing treatment or chairside polishing procedure. The purpose of this study was to compare the surface roughness among self-glazed, overglazed and polished porcelain with various polishing kit, and to detect which phase of polishing is optimal in clinic. Specimens were fabricated with Vita VMK porcelain. The surface treatment of each group was performed as follows. Group 1 : overglazing treatment Group 2 : self-glazing treatment Group 3 : polishing with the Truluster Polishing System for Porcelain(Brasseler, U.S.A.) Group 4 : polishing with the Exa Cerapol Adjustment kit (Edenta dental products, Switzerland) followed by finishing with diamond-filled polishing paste Group 5 : polishing with the Shofu Porcelain Adjustment kit (Shofu inc., Japan) followed by finishing with diamond-filled polishing paste. At each polishing steps, the measurement of Ra and Rq values were performed, and the surface was examined by scanning electron microscope. The results were as follows : 1. Overglazing treatment brought smoother surface than self-glazing treatment. 2. Polishing systems without porcelain polishing paste did not make better result than self-glazing treatment. 3. Polishing system with porcelain polishing paste made similar result to overglazing treatment. 4. Applying diamond-filled polishing paste after using polishing system which has no porcelain polishing paste produced surface as smooth as overglazing treatment does.

피부과 영역에서의 저출력광치료

최미라 ( Mi Ra Choi ),도은진 ( Eun Jin Doh ),이동훈 ( Dong Hun Lee ) 대한피부과학회 2016 大韓皮膚科學會誌 Vol.54 No.4

Low-level laser or light therapy (LLLT) was used to accelerate wound healing without the use of thermal effects in the early days. Although the exact mechanism of LLLT is still unclear, it has been recognized as a photobiomodulation process. Today, LLLT is being credited as a non-invasive treatment modality, and in particular, being widely applied in the field of dermatology. In this review, we summarize the basic principles and clinical applications of LLLT to provide an up-to-date guidance on its practical and safe uses. Further studies are needed to elucidate the mechanism of action of LLLT in various indications, and to determine the wavelength and dose for optimal clinical use. (Korean J Dermatol 2016;54(4):241~248)

Emerging treatment and promising treatment targets for skin photoaging

최미라 ( Mira Choi ) 대한피부과학회 2019 대한피부과학회 학술발표대회집 Vol.71 No.1

Controversies in the pathogenesis of CSU: chronic infection/infestation

최미라 ( Mira Choi ) 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.1

The pathogenesis of chronic urticaria is multifactorial and still represents a challenge to dermatologist. The association of between urticaria and infection diseases has been discussed for a long time, however, a causal relationship with underlying or precipitating infection is difficult to establish. There are many reports showing a causal relationship with infections in acute urticaria. But in chronic cases, the role of infections is controversial, although it is well known that concurrent infections exacerbated the condition. Recently there has been renewed interest in the role of infections on the chronic urticaria. In patients with chronic urticaria, the prevalence of infections is not increased but in susceptible patients the immune response may lead to the development of chronic urticaria. 1) Viruses According to recent systemic review, no viral cause has ever been clearly documented in chronic urticaria and that the screening of viral markers (hepatitis B and C, HIV) does not yield significant result, compared with the general population. 2) Bacteria Several bacterial pathogens have been described in chronic urticaria, such as Helicobacter pylori, Streptococcus, Staphylococcus, Mycoplasma pneumonia, Samonella, Chlamydia pneumonia, and Yersinia enterocolitica. The most reported bacterial infection associated with urticaria is a Helicobacter pylori infection, but the role of pathogenesis of chronic urticaria is still controversial. 3) Parasites Some epidemiologic studies suggest that internal parasite infections can cause chronic urticaria. Chronic urticaria patients were more often diagnosed with protozoa and had a significantly higher risk of toxocariasis seropositivity and Anisakis simplex sensitization compared to general controls. Concurrent gastrointestinal symptoms, a history of previous parasite infections, travel abroad, and unexplained eosinophila may suggest parasite infection in chronic urticaria patients. Until now, there is no consensus that infections are potential pathogenesis of chronic urticaria. Although only a weak association with urticaria and infections, however, physicians should consider these pathogens in the workup of patients with recalcitrant chronic urticaria.

Health effect of artificial light

최미라 ( Mira Choi ) 대한피부과학회 2018 대한피부과학회 학술발표대회집 Vol.70 No.1

연구논문 : 『시경(詩經)』에 나타난 행복구가와 인간성 회복

최미라 ( Mi Ra Choi ) 충남대학교 유학연구소 2014 儒學硏究 Vol.31 No.-

본고는 『詩經』의 詩들에서 행복구가의 내용을 살펴보고 이를 인간성 회복과 연결시킬수 있는지를 살펴보는 것이다. 사람은 행복하면 노래를 한다. 노래에 자신의 생각과 철학을 칭송이든 비판이든 솔직하게 담는다. 孔子는 이를 思無邪라고 했다. 하여튼 詩는 인간성을 회복한다. 최초의 시문집인 『詩經』에는 행복구가를 위한 詩들이 있다. 이것은 인간성 회복의 모습이다. 孔子 생애의 평범성과 현실성은 인간성 회복과 관계가 있다. 2500년 전 孔子에게 주어진 영감이나 계시는 자기 수양과 점점 더 분열되는 정체성에 도덕심을 회복시키겠다는 사명의식의 결과물이다. 『論語』에서 孔子는 인간성 회복으로서의 仁을 설명하고 있다. 孔子에게 仁은 행복구가의 전제였고 인간성 회복을 위한 修養이었기때문이다. 이러한 仁을 바탕으로 한 시들을 『詩經』에서 쉽게 찾을 수 있다. 『論語』에는『詩經』이 8번 인용된다. 孟子는 인간성 회복을 仁義에서 찾았다. 孟子에서도 『詩經』은37번이나 인용된다. 인용했다는 것은 인정한다는 전제이다. 결국 孔子와 孟子는 『詩經』을 인간성 회복의 전제로서 인정했다는 것이고 행복구가의 詩들은 仁과 仁義의 바탕이라고 설명된다. 『大學』에서 12번, 『中庸』에서 16번 『詩經』을 인용한다.『大學』에서 인간성 회복은 인격주체의 자기 수양, 그 자체로만 완결되지 않고, 더 정교화 된다. 몸을 닦아 공경하는 誠意와 正心, 몸을 닦아 사람을 편안하게 하는 修身과 齊家, 백성을 편안하게 만드는 治國과 平天下가 곧 ``행복구가``이며 ``인간성 회복``으로 확장된다. 현대인들은 이러한 ``인간성회복``의 구조를 인정하려면 『詩經』의 詩들을 통한 ``행복구가``의 의미를 생각하여야 한다. This study aims to examine the contents of singing happiness shown in poems of the Classic of Poetry(詩經) and the linkage thereof with the restoration of humanity. People sing songs when they are happy. They frankly express their thoughts and philosophies . whether they are praises or criticisms . through songs. Confucius referred to this expression as “having no depraved thoughts(思無邪).” Anyhow, poetry restores humanity. The first collection of poetry, the Classic of Poetry, contains poems that sing happiness. This is the effort to restore humanity. The commonality and reality of Confucius’s life are related to the restoration of humanity. Inspirations or revelations that Confucius received 2500 years ago are the results of his sense of mission to practice self discipline and to restore morality to his identity that was increasingly separated from his true self. In the Analects, Confucius explains about benevolence(仁) as the way of restoring humanity, because, for him, benevolence was the prerequisite to singing happiness and self discipline to restore humanity. Many poems based on such benevolence can be easily found in the Classic of Poetry. The Analects quoted the Classic of Poetry eight times. Mencius sought the restoration of humanity from benevolence and righteousness(仁義). Mencius also quoted the Classic of Poetry 37 times, which means that he acknowledged the latter. This suggests that both Confucius and Mencius acknowledged the Classic of Poetry as the prerequisite to the restoration of humanity, and that poems singing happiness are based on benevolence and benevolence and righteousness. Great Learning(大學) and Doctrine of the Mean(中庸) quoted the Classic of Poetry 12and 16 times, respectively. Great Learning argues that humanity cannot be restored by the person’s self discipline alone, but needs to be further refined. Sincerity(誠意) and right mind(正心) which are to discipline oneself and respect others, self-discipline(修身) and governing home(齊家) which are to practice self discipline and comfort others(治國), are ruling the state and pacifying the world(平天下) are the pursuit of singing happiness. Thisfurther expands into the restoration of humanity. Modern people should think of the meaning of singing happiness shown in poems of the Classic of Poetry in order to acknowledge the structure of restoring humanity.

당뇨 환자에서 인슐린 피하 주사 이후에 발생한 전신성 광택태선

최미라 ( Mi Ra Choi ),김민지 ( Min Ji Kim ),나세영 ( Se Young Na ),이종희 ( Jong Hee Lee ),조소연 ( So Yun Cho ) 대한피부과학회 2009 대한피부과학회지 Vol.47 No.8

Generalized lichen nitidus is a rare subtype of lichen nitidus, and the former condition is characterized by multiple, shiny flesh-colored pin-head sized papules that occur over the entire body. Generalized lichen nitidus is often associated with various degrees of pruritus and the clinical course tends to be chronic in contrast with the other forms of lichen nitidus. We report here on a case of a 39-year-old man who was diagnosed with generalized lichen nitidus that developed after a subcutaneous insulin injection. He was treated with topical corticosteroid. (Korean J Dermatol 2009;47(8):948~950)

결절성 근막염 28예의 임상, 병리학적 고찰

최미라 ( Mi Ra Choi ),권인호 ( In Ho Kwon ),김동현 ( Dong Hyun Kim ),김규한 ( Kyu Han Kim ),조소연 ( So Yun Cho ),박귀영 ( Kui Young Park ),이갑석 ( Kap Sok Li ),김범준 ( Beom Joon Kim ),김명남 ( Myeung Nam Kim ),원종현 ( Chong Hy 대한피부과학회 2009 大韓皮膚科學會誌 Vol.47 No.6

Background: Nodular fasciitis presents as a solitary, slightly painful, rapidly growing nodule. It is associated with a reactive, proliferative process of unknown cellular origin and can be misdiagnosed as a sarcoma. Objective: Our study was designed to investigate the process and cellular origin of the disease. Methods: The clinical and histopathologic findings from 28 cases of nodular fasciitis were reviewed. Additional histochemical and immunohistochemical staining was done. Results: The mean age of onset was 29.8 years. A majority of patients with nodular fasciitis had a duration of symptoms of less than 6 months. The upper extremity and face were most frequently involved. Most of the lesions had diameters less than 2 cm. Total excisions were performed in 23 lesions; 3 lesions recurred thereafter. Histopathologically, a subcutaneous plane was most frequently involved. The nodule consisted of numerous large, pleomorphic fibroblasts growing haphazardly in a vascular stroma containing varying amounts of mucoid ground substance, which was confirmed by histochemical stains. In the immunohistochemical stain, most lesions had positive findings for smooth muscle actin (SMA), vimentin and negative findings for CD34 except in a few cases. The stains for desmin and S-100 were negative in all cases. Conclusion: It is suggested that nodular fasciitis is associated with a reactive proliferation of myofibroblasts rather than with a sarcomatous process. (Korean J Dermatol 2009;47(6):649∼657)

동시를 활용한 또래 함께읽기 전략이 초등학교 읽기학습부진아의 읽기유창성과 읽기태도에 미치는 영향

최미라 ( Mi Ra Choi ),강옥려 ( Ock Ryeo Kang ) 한국특수교육문제연구소 2012 특수교육저널 : 이론과 실천 Vol.13 No.4

본 연구는 동시를 활용한 또래 함께읽기 전략이 읽기학습부진아동의 읽기유창성과 읽기태도에 미치는 영향을 알아보았다. 이를 위해 초등학교 2학년 읽기학습부진아 20명을 선정하여 실험집단과 통제집단에 각각 10명씩 배치하였고 실험집단의 읽기학습부진아는 또래학습자 역할을 하였다. 또한 읽기학습부진이 없는 일반아동 10명을 선정하여 실험집단에서 또래 지도자 역할을 하도록 하였다. 실험집단에는 동시를 활용한 또래 함께읽기 전략을 매주 3회씩 총 5주 동안 실시하였다. 읽기유창성과 읽기태도에 대한 사전ㆍ사후검사 결과와 진전도 분석을 위한 읽기유창성에 대한 주 1회의 형성평가 결과를 분석한 결과, 동시를 활용하여 또래함께읽기 전략을 중재 받은 실험집단과 통제집단 간에는 진전도와 사후검사에서 모두 유의한 차이를 보였다. 즉, 동시를 활용한 또래 함께읽기 전략이 초등학교 읽기학습부진아의 읽기유창성과 읽기태도를 향상시키는데 효과적이었다. The purpose of this study was to investigate the effects of peer paired reading using children’s poem for enhancing reading skills, that is, oral reading fluency and attitude of low-achieving students in reading. For this purpose, 20 low-achieving students in second grade were selected. The students were divided into two groups of 10 persons each, an experimental group with peer paired reading and a control group. For tutors of the experimental group, 10 second graders were selected from the same elementary school. The experiment was conducted for 20 minutes each session, third times a week for 15 sessions. Tests of oral reading fluency and reading attitude were conducted. Oral reading fluency test was conducted pre-test and formative assessment once a week. Reading attitude test was conducted in pre- and post- test. The data of this study were also analyzed by t-test and HLM(Hierarchial Linear Model). The results obtained in this study are summarized as follows: First, peer paired reading had a positive effect on oral reading fluency and attitude of low-achieving students in reading. Second, peer paired reading showed significant faster growth rates on oral reading fluency. It showed the initial state and the linear slope depending on the individual child. In conclusion, peer paired reading using children’s poem is an effective method to enhance oral reading fluency and attitude of low-achieving students in reading.

입원 중 피부과로 의뢰된 환자의 임상 분석

최미라 ( Mi Ra Choi ),박현선 ( Hyun Sun Park ),변희진 ( Hee Jin Byun ),조광현 ( Kwang Hyun Cho ) 대한피부과학회 2010 대한피부과학회지 Vol.48 No.3

Background: Dermatologic problems may represent a primary cutaneous disorder or an underlying systemic disease and are common but frequently overlooked in inpatients. Objective: We described and quantified dermatologic consultations in Seoul National University Hospital over 9 years for comparison with other reports. Methods: We retrospectively studied the records of 9,529 hospitalized patients for which a dermatologist consultation was requested. Results: Consult patients numbered 9,529 among 506,927 inpatients (1.88%). The total number of male and female patients were 5,428 (56.96%) and 4,101 (43.04%), respectively (M: F=1.32:1). The most frequent age group was the 6th decade (19.05%) and the lowest age group was the 1st decade (5.14%). In 2008, most of the consultations (72.24%) were made by internal medicine, followed by neurology (6.34%), and pediatrics (4.59%). Patients with cancer were most frequently consulted for underlying disease (24.58%), followed by hematologic malignancy (22.66%), and liver disease (10.69%). The most common skin disorders were drug eruption (24.5%), followed by eczema (15.7%), and viral infection (12.6%), and with more consults for drug eruption and viral infection than previous studies. The most common reasons for consultation were: dermatologic diseases or conditions (73.8%), diseases related to treatment (16.2%), and skin lesions of systemic disease (8.8%). Conclusion: Inpatient dermatology consultations not only improve the quality of patient care but also can provide opportunities for residency education and experience with clinical dermatology. (Korean J Dermatol 2010;48(3):163~170)