• Journal of the Korean Society for Industrial and Applied Mathematics
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• 제10권2호
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• pp.49-52
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• 2006

요즈음 디스플레이가 평판 제품인 PDP, LCD등으로 급속히 대체됨으로써 브라운관도 두께가 점점 얇아지고 있다. 따라서 새도우마스크 부품도 점점 평평해진다. 평평한 곡면은 진동이나 충격에 약하기 때문에 곡면을 크라운하게 설계하는 방법을 제시한다.

• 대한소아치과학회지
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• 제4권1호
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• pp.35-38
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• 1977

The study was performed to evaluate effects of Conservative treatment between amalgam filling and stainless steel crown. The selected subjects for this study was 350 children who have amalgam filling or stainless steel crown. The obtained results are as followings. 1. In amalgam filling teeth, 120 teeth (60.0%) showed marginal leakage, 57 teeth (28.5%) showed fracture of filling material and 28 teeth (14.0%) teeth showed periapical lesion. 2. In crowned teeth, 6 teeth (3.0%) showed hole on the surface of crown, 29 teeth (14.5%) showed avulsion of crown and 10 teeth (5.0%) showed periapical lesion. 3. After 12 months from examining date, 69 teeth (34.5%) showed sound condition in amalgam filling teeth and 155 teeth (75.2%) showed sound condition in crowned teeth.

• 한국임상수의학회지
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• 제26권5호
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• pp.511-513
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• 2009

This report deals with a 3-year-old male Yellow-crowned Amazon (Amazona orcrocephala) that died after twenty five days history of cloacal prolapse. On necropsy, multiple to occasionally coalescing well-demarcated tan nodules were scattered throughout the entire liver lobes. The nodules were firm and slightly elevated from the surface. The neoplastic nodules were also recognized on cut sections of the liver. Histologically, the nepatic nodules consisted of cuboidal to low columnar cells forming tubular to acinar pattern with marked desmoplasia. The neoplastic cells had small to moderate amounts of eosinophilic cytoplasm and round nucleus with one to two prominent nucleoli. Based on these results, hepatic nodules was diagnosed as primary cholangiocellular carcinoma.

• 한국임상수의학회지
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• 제26권4호
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• pp.348-352
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• 2009

개의 구토물에서 발견된 기생충의 진단을 의뢰 받았다. 충체는 육안상 흑갈색을 띠고 있었고 길이 215 mm, 폭 1.2 mm 였다. 광학현미경에서 각피, 각피하층, 근층 내에 mesenchyme, nerve cord, pseudocole, 장이 존재하였으나 생식기는 관찰되지 않았다. 각피의 주사전자현미경 관찰에서 5개의 특징적인 areoles이 관찰 되었다. 5개의 Areole의 형태는 각각 simple, tubercle, bulging, crowned, circumcluster areole로서 Chododes속의 특징적인 형태를 지니고 있었다. 입의 발달은 미약하였고 총배설강은 후단에서 3.7 mm 전방 배측 정중선에 개구하였으며 후단 정중선에 얕은 구가 존재 하였다. 상기의 결과에 근거하여 오디흑연가시(Chordodes koreensis)의 수컷 유충으로 동정하였다. 철선충증의 인체보고는 많이 있으나 개에서의 보고는 거의 없으며 이는 국내 최초의 개에서의 오디흑연가시증의 증례보고이다.

• 대한소아치과학회지
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• 제23권2호
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• pp.389-400
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• 1996

In Class II amalgam restoration in deciduous molar, failure rate and incidence of recurrent caries are high as children become older. In order to preserve deciduous molars till the physiologic exfoliation time, stainless steel crown is a choice of the treatment. As a result of a careless treatment, such as overhanging margin, poor marginal adaptation, poor proximal contour and inadequate mesiodistal width give rise to interfering eruption of the adjacent teeth, recurrent caries and chronic gingival irritation and insufficient arch length respectively. In this study, 252 s.s. crowned teeth extracted due to physiologic exfoliation or periapical lesion. The purpose of this study is to analyze the marginal adaptation of stainless steel crown to the deciduous molar in order to obtain better clinical result. The results were as follows : 1. Between the length of s.s. crown and the marginal gap of crown, positive correlations were shown. 2. Largest amount of marginal gap was shown at buccal side in upper deciduous molars and lower first deciduous molar, lingual side in lower second deciduous molar. But no significant diffrence were found statistically compared to second most largest one. 3. Incidence of exposed restoration and recurrent caries were higher in proximal surface than buccal/lingual surface. And extension of restoration below the margin of s.s. crown gives rise to higher rate of recurrent caries. 4. Defect of contour was found in 34%, frequently found in lower 1st deciduous molar and upper 1st deciduous molar. 5. Marginal polishing defects were found in 23%. 6. Ledge was formed in 10% especially in lower 1st deciduous molar and lower 2nd deciduous molar. 7. 16% of the teeth had wear facet due to traumatic occlusion, 7% of them had occlusal perforation.