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- 저자 : 이춘봉(Choon Bong Lee) (검색결과 5 건)
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홍대광(Dae Kwang Hong),이춘봉(Choon Bong Lee),한을남(Eul Nam Han),허충림(Choong Rim Haw) 대한피부과학회 1986 대한피부과학회지 Vol.24 No.2
We present a case of epidermodysplasia verruciformis a.ssociated with Bowen's disease. Patient was 33 year-old male and his skin lesions showed diffuse flat papules on face and neck, many brownish papules on trunk and papillomatous tumors also appeared un scalp and post auricular area, Skin biopsy findings from the flat papular lesion showed histopathologic features of verruca plana and from the papillomatous lesion showed the feature of Bowen's disease. Electron microscopic finding from the flat papular lesion showed marked aggregates of viral particles around the nuclei of epidermal keratinocytes.
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가족성 양성 만성천포창의 - 전자현미경적 소견의 관찰 -
김낙인(Nack In Kim),이춘봉(Choon Bong Lee),이무형(Moo Hyung),허충림(Choong Rim Haw) 대한피부과학회 1987 대한피부과학회지 Vol.25 No.5
A 25-year-old man with familial benign chronic pemphigus presented with a one-year history of a localized pruritic recurrent eruption on his perianal area, Physical examination showed moist, macerated, fissured and scaly patches on erythematous base, A biopsy specimen showed extensive intraepidermal separation containing acantholytic cells. Electron microscopic observation showed widened intercellular space, detachment of the tonofilaments from the desmosomes, and subsequent concentration of the tono filaments around the nucleus. Microvilli were elorigated, thinned and branehed. 1)esmosomes were reduced in number. This case is unique in its clinical location, showing no family tendency.
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브라켓 기저부 형태에 따른 전단, 인장, 전단/인장복합결합강도의 비교
이춘봉,이승호,김정기 대한치과교정학회 1999 대한치과교정학회지 Vol.29 No.5
금속 브라켓의 결합강도에 영향을 미치는 요소인 브라켓 기저부의 형태와 결합 부위에 적용되는 힘의 특성에 대해 알아보고자 연구를 시행하였다. 형태가 다른 5종의 금속브라켓의 기저부와 결합강도 측정후 접착파절양상을 stereoscope and scanning electron microscope를 통해 관찰하고 결합 부위에 적용되는 힘은 전단결합강도, 인장결합강도, 전단/인장복합결합강도로 구분하고 결합강도를 비교하여 다음과 같은 결론을 얻었다. 1. 브라켓 기저부 형태에 따른 모든 군에서 전단결합강도(SBS)가 제일 컸으며, 인장결합강도(TBS)는 SBS의 50%정도 수준이었고 전단/인장복합결합강도(S/TBS)는 전단결합강도(SBS)의 30%정도이었다. 2. 브라켓의 결합강도는 Micro-Loc base가 가장 크고(SBS:22.86±1.37kgf, TBS:11.37±1.43kgf, S/TBS:6.69±0.34kgf), Integral base가 가장 작았다(SBS:10.52±1.27kgf, TBS:4.27±1.08kgf, S/TBS:2.94±0.58kgf). 3. 단위면적당 결합강도 비교시, Integral base가 가장 작았고(p<0.05), 전단결합강도와 인장결합강도에서는 Micro- Loc과 Chessboard base간의 차이가 없었으며(p>0.05), Non-Etched foil Mesh와 Micro-Etched foil Mesh base 간의 전단결합 강도와 인장결합강도는 차이가 없었으나, 전단/인장복합결합강도에서는 Micro-Etched Foil Mesh base가 Non-etched Foil Mesh base보다 더 크게 나타났다. 4. 전단, 인장, 전단/인장복합결합강도 측정후 접착파절은 브라켓/레진 계면에서 일어나 ARI score가 작게 나타났다. The purpose of this study was to evaluate shear, tensile and shear/tensile combined bond strenghts(SBS, TBS, S/TBS) in various orthodontic brackets bonded to human teeth with chemically cured adhesive (Ortho-one, Bisco, USA). Five types of metal brackets with various bracket base configurations (Micro-Loc base(Tomy, Japan), chessboard base(Daesung, Korea), Non-Ethed Foil Mesh base(Dentarum, Germany), Micro-Etched Foil Mesh base(Ortho Organiners, USA), Integral base(Unitek, USA)) were used in this study. Shear, tensile and shear/tensile combined bond strengths according to the direction of force were measured by universal testing machine. The bracket base surface after bond strength test were examined by stereoscope and scanning electron microscope. The assessment of resin remnant on bracket base surface was carried out by ARI(adhesive remnant index). The results obtained were summarized as follows : 1. In all brackets, SBS was in the greatest value(p<0.05), TBS was in 50% level and S/TBS was in 30% level of SBS. 2. In bond strength, Micro-Loc base bracket showed the maximum bond strength(SBS : 22.86±1.37kgf, TBS:11.37±0.42kgf, S/TBS:6.69±0.34kgf) and Integral base bracket showed the minimum bond strength(SBS : 10.52±1.27kgf, TBS:4.27±1.08kgf, S/TBS:2.94±0.58kgf) (p<0.05). 3. In bond strength per unit area, Integral base bracket showed the minimum value, Micro-Loc base and Chessboard base brackets were in similar value(p>0.05). Non-Etched Foil Mesh base and Micro-Etched Foil Mesh base bracket were similar in SBS and TBS(p>0.05), but Micro-Etched Foil Mesh base bracket was greater than Non-Etched foil Mesh base bracket in S/TBS(p<0.05). 4. Bond failure sites were mainly between bracket base and adhesive, therefore ARI scores were low.
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근무력증 환자의 흉선절제술시의 마취 : 1예 보고 A case report
박진우,신병훈,이춘봉,조영일 인제대학교 1983 仁濟醫學 Vol.4 No.3
It is well known that the surgical management and the ultimate outcome of the patient with myasthenia gravis depend largely on the care given by a well-trained specialized team. Anesthesiologists may be at any time faced with unexpected complex problems such as severe respiratory and circulatory emergencies that may occur not only in myasthenics but during anesthesia for thymectomy or other surgical procedures to be performed on myasthenic patients. A case of anesthesia for thymectomy in myasthenia gravis was experienced and the course of the operation was uneventful. Consequently it must be essential for anesthesiologists to keep up with the up-to-date knowledge about the pathophysiology of myasthenia gravis.
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경막외 Buprenorphine 용량에 따른 하복부 수술 진통효과의 비교
김태성,김현수,김광민,이춘봉 대한마취과학회 1995 Korean Journal of Anesthesiology Vol.29 No.1
Since the first use of epidural morphine in man, a number of other opiates have been studied including fentanyl, pethidine, methadone, diamorphine and buprenorphine. Among them buprenorphine is a relatively new synthetic opiate that is known to be highly lipophilic and to have an affinity for the opiate receptor approximately twice that of morphine. It is produced in a preservative free solution, and would seem a logical choice for epidural analgesia. But there was no data on the adequate dose for the postoperative pain control after lower abdominal surgery. Current study was designed to investigate the efficacy of three doses of epidural buprenorphine for postoperative pain control with the checking the pain sccore. Fifty seven female patients undergoing elective lower abdominal surgery were randomly assigned to receive epidural buprenorphine as a rate of 0.3 (group A, initial dose 0.15 mg + maintenance dose 0.15 mg), 0.45 (group B, 0.15 mg + 0.3 mg), or 0.6 mg (group C, 0.3 mg + 0.3 mg) utilizing the Two-Day Infusor™ during the two days after cessation of operation. Authors compared the efficacy of three doses with checking the pain scale (Facial expression pain scale, Prince Henry pain scale) at 6, 12, 24, and 48 hour postoperatively. Side-effects were recorded. There were no significant difference among three groups with respects to mean age. Analgesic effects for patients receiving 0.6 mg (group C) were superior to those of group A but were not significantly different from analgesic effects of group B except 6 hour postoperatively. Side-effects (nausea and vomiting) of group C were significantly more than group B. The dose of epidural buprenorphine in Group B (initial dose 0.15 mg+maintenance dose 0.3 mg) may be recommended for postoperative analgesia following lower abdominal surgery. (Korean J Anesthesiol 1995; 29: 118~124)
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