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하악 제3대구치 판개(Opercula)의 병리조직학적 연구
이연종(Nyoun Jong Lee),윤중호(Jung Ho Yoon),이의웅(Eui Wung Lee) 대한구강악안면외과학회 1981 대한구강악안면외과학회지 Vol.7 No.1
The author studied 33 cases of the opercular histopathologically obtained from a position overlying impacted or partial erupted 3rd molards during extraction of these teeth. These soft-tissue specimens (opercular) were obtained from 33 male & females patients aged from 18 to 30 year old who came to have wisdom teeth removal at the Department of Oral Surgery, Infirmary of Dental College, Yonsei University. All findings were based on the original six slides cut with a thickness of 6 micron and stained with hematoxylin and eosin. The histopathologic findings were tabulated and discussed on the epithelial, connective tissue, and vascular changes of opercula. The results of this studies are as follows: 1. The mucosal epithelial cell covering the operculum was found squamous in 31 cases (96.88%) and odontogenic type in 17 cases (53.13%) of 32 cases but for one with total ulceration of epithelium. Acanthosis was present in 24 cases (75.00%) and also accompanied by pseudoepitheliomatous hyperplasia in 6 cases (25.00%). 2. Hyperkeratosis or hyperparakeratosis in the superficial layers of the epithelium in 26 cases (81.25%) was found, but the dyskeratosis was shown 6 cases (18.75%) and 2 cases (33.33%) of them revealed benign epithelial pearls. 3. In 32 cases, opercular showed 17 cases (53.13) of spongiosis, 5 cases (15.63%) of vesiculation, and 1 case (3.13%) of atrophy in epithelium. Partial or total ulceration of epithelium was present in 12 cases (36.36%) of 33 opercula. 4. Squamous and odontogenic-type epithelium were able to observe simultaneously in 16 cases (50.00%), especially the odontogenic type showed metaplastic reaction to squamous type in the are of junction between the inner surface and the outer surface of operculum. 5. Epithlium of the odontogenic type was found deep within connective tissue layer and it composed of the epithelial islands in 1 case (3.03%). 6. Of 33 cases opercula, the osteoid or bone was only present in 3 cases (9.09%) and 2 cases (66.67%) showed the osteoblasts around and osteocytes in bony tissue. 7. In connective tissue, myxomatous change was found in 2 cases (6.06%) and eosinophils were increased in 7 cases (21.21%). 8. Salivary gland tissues were found in 2 cases (6.06%), they were all mucous type glands, and ectopic sebaceous gland tissue was also found in 1 case (3.03%). 9. Infiltration of inflammatory cell in connective tissue was found in 27 cases (81.81%) and fibrosis was shown in 17 cases (51.52%) of 33 cases. 10. Vascular changes in 33 cases revealed the following findings; vascular proliferation in 12 cases (36.36%), hyperplastic changes in 6 cases (18.18%), fibrosis of adventitia in 4 cases (12.12%) and sclerotic changes in 1 cases (3.03%). 11. Opercula contained a host of different tissues. Therefore it may conclude that many of these opercula have the propensity to undergo neoplastic changes, or cause postoperative complications.
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Sung Ik Yang(梁誠益),Eui Wung Lee(李義雄),Jong Ho Yoon(尹仲鎬) 대한구강악안면외과학회 1983 대한구강악안면외과학회지 Vol.9 No.1
The authors have treated and observed a case of sialolithiasis in the orifice of the Wharton s duct of Rt. submandibular gland. 1. This is a case of sialolithiasis in the orifice of the Wharton s duct of Rt. submandibular gland in a 71 year old male patient. 2. The salivary stone was about 3.3×1.8×1.0 cm in size, yellowish brown in color, and its sur-face was irregular and rough and its internal structure was laminated. 3. Removal of salivary stone was performed under local anesthesia via intraoral approach and follow-up results reveal the normal salivation without any complications.
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인공신경망을 적용한 기획단계의 도로건설 공사비 예측 모델
한형동(Han Hyeong Dong),김정환(Kim Jeong Hwan),윤중호(Yoon Jung Ho),서종원(Seo Jong Won) 대한토목학회 2011 대한토목학회논문집 D Vol.31 No.6D
공사비 견적이란 건설공사를 수행하는데 소요되는 공사비를 산정하는 것으로 공사 기획단계에서 사용하는 개략견적은 다양한 목적으로 사용된다. 한편 도로공사의 경우 현행 사용되는 개략견적방법은 과거의 실적자료를 산술평균하여 단위 ㎞당 공사비를 제시한 것으로 실제 개략공사비로 활용하기에는 어려움이 있다. 본 연구에서는 기획단계의 도로공사견적 산정방식에 대한 한계를 해결하기 위하여 인공신경망을 적용한 개략공사비 모델을 제시하는 것을 목적으로 한다. 도로건설 공사 입찰을 위한 기본설계도면 작성 이후 공사비를 결정하는 변수를 포함한 과거 실적 자료를 바탕으로 인공신경망을 적용하여 기획단계에서 공사비 예측이 가능한 도로 공사비를 개략견적 하는 모델을 설계하였으며 시행착오방식을 이용하여 모델의 변수들을 최적화하였다. 또한 최적화된 모델을 통해 나온 결과를 회귀분석을 적용한 결과와 비교하여 정확도가 뛰어남을 검증하였다. 제안된 인공신경망모델은 차후 도로건설공사의 개략공사비 산정을 위한 활용될 것으로 기대된다. Construction cost estimation in planning phase which calculates the cost for performing construction tasks is used for various ways. Meanwhile in the case of road construction the existing cost estimating method in early phase based on numerical mean value of the past is not accurate to be used. This paper propose neural network model for estimating road construction cost in planning phase to solve the limit of current cost estimating method. The model was designed using past road construction bidding records and variables of model were optimized through trial and error. The estimation result of the model was compared with regression analysis and government's standard and it was verified that the model is better in accuracy. It is expected that the proposed model will be used for road cost estimation in planning phase.
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Eui Wung Lee(李義雄),Myung Rae Kim(金命來),Jung Ho Yoon(尹仲鎬),Nyoun Jong Lee(李年鍾),Jong Ho Shin(申宗浩) 대한구강악안면외과학회 1975 대한구강악안면외과학회지 Vol.1 No.1
This is to report a case of extreme mandibular prognathism corrected by bilateral ostectomy in the body of the mandible. After the precise clinical, cephalometric and model analysis, the 27-year-old female patient was treated by removal of a section of bone from both mandibular second molar region. The results are as follows; 1. The postoperative cephalometric analysis reveals remarkable reduction of mandibular body length, ratio of mandibular body to anterior cranial base, SNB, ANB, SNPo, anterior face height. The surgical correction resulted in satisfactory cosmetic and functional improvement without any noticeable complications. 2. To control the axial inclination of upper and lower anterior teeth, minor teeth irregularities and to eliminate the premature contact, fixed type orthodontic appliances with occlusal equilibration have been performed for about one year. The prosthodontic restoration was also required for the edentulous lower posterior region to obtain better oral rehabilitation.
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DBpia
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