根管壁 維持溝가 Post의 維持力에 미치는 影響

曺圭澄,李再煥 大韓齒科保存學會 1987 Restorative Dentistry & Endodontics Vol.12 No.2

ABSTRACTThe experimental study was made to evaluate the influence of retentive grooves on the canal wall upon the retention of post, using different type of cements. Ninety periodontally involved anterior teeth were extracted and divided into six groups of 15 teeth.The groups were labeled as follows: Group I: Dentatus post cemented zincphosphate cement into post hole with smooth wall. Group II: Dentatus post cemented with zincphosphate cement into post hole with retentive grooves. Group III: Dentatus post cemented with glass-ionomer cement into post hole with smooth wall. Group IV: Dentatus post cemented with glass-ionomer cement into post hole with retentive grooves. Group V: Dentatus post cemented with composite resin adhesive into post hole with smooth wall. Group VI: Dentatus post cemented with composite resin adhesive into post hole with retentive grooves. The tensile strength was tested by an Instron type tester with cross-head speed of 5mm per minute.The results were as follows: In the group without retentive grooves, three kinds of cement have little effect upon reten- tive capacity of Dentatus post. The Dentatus post cemented on the canal wall with retentive grooves is more retentive than Dentatus post without retentive grooves.

관동맥연축의 진단을 위한 Ergonovine Echocardiography의 안전성 및 임상적 유용성

송재관,박성욱,강덕현,조구영,나득영,이내희,이철환,홍명기,김재중,박승정 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.8

개에서 결직장 연접부의 림프종 1례

이재일,이수진,김영석,김명진,조성환,신상태,이영원,김명철 충남대학교 수의과대학 동물의과학연구소 2003 動物醫科學硏究誌 Vol.11 No.-

A five years old female Shih-tzu was referred to the veterinary medical teaching hospital at Chungnam national university with soft bloody diarrhea and tenesmus. On rectal palpation, solid mass was palpated in colorectal region. In radiographs, small intestine was deviated cranially, descending colon and rectal junction were deviated caudoventrally in lateral projection of the abdomen. In ultrasonographs, hypoechoic nodulation of mesenteric lymph node in colorectal junction, mixed echoic thickening of colorectal wall and irregular margination were observed. Rectal endoscopy revealed that colorectal men was partially obstructed due to compression of the mass. Also, severe ulceration, inflammation and hemorrhage were also observed in descending colon. The mass was resected through the laparotomy. In histopathology, it was diagnosis of lymphoma in the colorectal junction.

서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)

김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2

Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results: In 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.

심초음파 단독 검사로 시행한 단순 심실중격결손증의 영아기 수술

김은경,최재영,이종균,은영민,설준희,이승규,박영환,조범구 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.10

뇌실주위 백질연화증 발생 위험인자

이동환,서은숙,이우령,조명환,박재옥 순천향의학연구소 1998 Journal of Soonchunhyang Medical Science Vol.4 No.1

The twenty newborn infants with periventricular leukomalacia(PVL) who were admitted to the neonatal intensive care unit of SoonChunHyang University Hospital from May 1, 1993 to July 30, 1997, were investigated for risk factors. Control group were the age matched 20 neonates who were admitted at the same time of study period. The results were as follows: 1) Mean gestational age was 31 week and mean birth weight 1665gm. 2) PVL's were located in the parietal region in 10 cases, fronto-occipital in 7 cases and parieto-occipital region in 3 cases. 3) Multiple logistic regression analysis for the risk factors of PVL showed that low birth weight, intraventricular hemorrhage, bronchopulmonary dysplasia, necrotizong enterocolitis and ventilator apply were the most significant contributing factor(P<0.05). 4) In a follow-up ultrasonograptic findings, 11 among 14 neonates with localized PVL were normalized whereas, all of 6 extensive PVL had the sequale of ventriculomegaly or cerebral atrophy. 5) In a follow-up neurologic examination, the poorer sequale including spastic diplegia or quadriplegia was associated with the larger, the more extensive PVL.

돼지에서 창상치유에 대한 키토산의 영향

변홍섭,김명진,이재연,조성환,박창식,김명철 충남대학교 형질전환복제돼지연구센터 2007 논문집 Vol. No.10

The objective of this study was to investigate the effects of implanted chitosan applied to surgically created wound in pigs. Six healthy 2∼3 months old Landrace and Yorkshire mixed breeds of both genders were used. A 2 cm straight skin incision was made and undermined skin (2×2cm) over on the each pig's both sides of dorsal midline at 0, 7. 14 and 18 days. One wound (left side) was implanted 0.4 mg of cotton type chitosan and other wound was treated saline (3ml). Each wound was closed with two interrupted suture of 2-0 sutures. The wounds created at 18. 14.7 and 0 days were named post-wounding day (PWD) 3, 7, 14 and 21, respectively. At 21 days after initial wounding, each wound was taken for histological observations. Reepithelialization tended to be greater in the chitosan group than in the control group at PWD 3 and 14. Granulation tissue formation did not show especial differences in two groups. Number of inflammatory cells was lesser statistically in level in the chitosan group than those in the control group at 21 days after wounding (p<0.05). Fibroblasts and neovasculature tended to be greater in the chitosan group than in the control group at PWD 3 and 7, and tended to be lesser in the chitosan group than in the control group at PWD 14 and 21. Collagen and fibrin were observed to be evenly distributed around the wound in the chitosan group. But collagen and fibrin were observed to be converged along the wound in the control group.

골수구성 백혈병 환자에게 발생한 결핵성 림프절염

이창섭,송진수,최평균,조재현,방지환,박경화,박완범,김홍빈,김남중,윤성수,박선양,김병국,오명돈,최강원 대한감염학회 2006 감염과 화학요법 Vol.38 No.5

혈액질환 가운데 결핵 발생이 증가한다고 알려진 것은 호지킨 림프종을 포함한 림프증식성질환 그리고 모양세포성 백혈병 등이 있다. 또한 동종 골수이식을 받은 환자에서도 결핵은 증가한다고 알려져있다. Kaplan 등은 골수구성 백혈병 환자에서 결핵 발생이 증가한다고 보고하였다. 그러나 골수구성 백혈병 환자에서 결핵의 발생이 증가하는 이유에 대해서는 아직까지 정확하게 밝혀지지 않았다. 저자들이 2년 동안 후향적으로 조사한 180명의 성인 골수구성 백혈병 환자들 가운데 결핵이 발생한 환자는 4명이었고, 발생 부위는 모두 림프절이었다. 결핵은 골수구성 백혈병의 특정 아형에만 국한되어 발생하지 않았지만, 50%에서 FAB 분류에 의한 M4였다. 림프절이 종대된 골수구성 백혈병 환자에서 특히, 결핵의 유병율이 높은 나라에서는 결핵성 림프절염도 감별진단에 포함시켜야 한다. During the neutropenic phase, leukemia patients receiving chemotherapy are prone to bacterial and, fungal infections; occasionally mycobacterial, viral and protozoal organisms may also cause infections. Mycobacterium tuberculosis infection was reported very rarely in these patients. This report describes four patients with M. tuberculosis infection identified from 185 adult patients who were diagnosed myelogenous leukemia between January 2003, and December 2004. There was no patient with M. tuberculosis infection from 44 lymphoid leukemia and 11 acute biphenotypic leukemia patients. Sites of infection were all lymph nodes. Three among four patients were presented with lymphadenopathy at initial diagnosis of leukemia, and the other one presented with lymphadenopathy after induction chemotherapy. There was no patient presented with lymphadenopathy during the neutropenic phase. Tuberculous lymphadenitis was presented in a patient with three acute myelogenous leukemia (FAB class 2 M4, 1 M2) and a chronic myelogenous leukemia, accelerated phase. An acute myelogenous leukemia patient had a leukemic cell and tubercle bacilli in the same lymph node. Tuberculosis should also be included as a differential diagnosis in myelogenous leukemia patient with lymphadenopathy, especially in the countries in which the disease is endemic.

Ba-Ferrite를 이용한 자기 연마재 개발

김희남,송승기,정윤중,윤여권,김희원,조상원,심재환 한국안전학회 2003 한국안전학회지 Vol.18 No.2

The magnetic polishing is the useful method to finish some machinery fabrications by using magnetic power. This method is one of the precision techniques and has an aim for clean technology in the transportation of the pure gas in the clean pipes. The magnetic abrasive polishing method is not so common in the field of machine that it is not known to widely. There are rarely researcher in this field because of non-effectiveness of magnetic abrasive. Therefore, in this paper we deals with the development of the magnetic abrasive with the use of Ba-Ferrite. In this development, abrasive grain WA has been made by using the resin bond fabricated at low temperature. And magnetic abrasive powder was fabricated from the Ba-Ferrite which was crushed into 200 mesh. The XRD analysis result shows that only WA abrasive and Ba-Ferrite crystal peaks were detected, explaining that resin bond was not any more to contribute chemical reaction. From SEM analysis, we found that WA abrasive and Ba-Ferrite were strongly bonding with each other.

인천 인현동 호프집 화재 피해자 분석

최정태,안무업,안희철,최영미,정재봉,서정열,유기철,이삼우,박석현,조준휘,김성환,김아진,송근정 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4

Purpose : This study was conducted to develop field triage, transportation, distribution, and prehospital care at a fire disaster by analyzing the victims of the fore that broke out at a bar in Incheon. Method : We analyzed the cases of the victims of a fire in Incheon in Oct. 1999. We determined the primary care hospital, the arrival time, the burn size, the outcome, and the injury type from the medical records, the concerned organ records, and interviews with concerned persons. Result : The total number of victims was 137: 56 prehospital deaths, 1 hospital death, and 80 survivals. The Pearson correlation coefficient between the burn size and the severity was -0.175. There were 121(89.6%) cases of inhalation injury, 59 (43.7%) cases of flame burns, 66 (48.9%) cases of hypoxic brain damage, and 16 (11.9%) cases involving other types of injury. Conclusion : The causes of death of the fire victims were inhalation injury and hypoxic brain damage due to CO poisoning and other toxic inhalants. We propose the use of a simple triage and rapid treatment(START) system and a reassessment the delayed category in fire disasters.