치아 교환기 어린이에서 근단변위부분층 판막술을 이용한 하악 거대 협소대의 위치

이성룡,오유향,이난영,이창섭,이상호 大韓小兒齒科學會 2004 大韓小兒齒科學會誌 Vol.31 No.4

영구치의 맹출 지연이 발생하는 원인은 다양하다. 유치의 만기 잔존과 조기 상실, 과잉치나 치아종과 같은 이형물의 존재등과 같이 비정상적인 경조직 인자에 의해 발생할 수 있고, 치은 판개 조직(opercula)과 같은 상부 치은 조직의 섬유성 비후나 소대의 과증식과 같은 연조직성 인자에 의해 발생하기도 한다. 영구치의 맹출 지연시의 공간의 상실 및 영구치의 비정상적인 맹출, 그리고 그에 따른 치열궁의 비대칭과 같은 교정적 문제와 대합치의 정출 등에 의한 교합적인 문제등이 발생할 수 있어 조기에 진단하여 처치하는 것이 중요하다. 본 증례에서는 12세 남자 아이가 충치가 많고 치아가 나오지 않는다는 것을 주소로 내원하여 진단한 결과, 하악 좌측 소구치들이 맹출하지 못하고 매복되어 있는 것을 알 수 있었다. 원인은 맹출 공간이 부족하였고 동시에 거대 협소대가 치아의 맹출을 방해하는 것으로 파악되었다. 이에 대한 처치로 우선 공간을 획득하고 난 후, 부착치은의 회복과 맹출 촉진을 위해 근단변위부분층 판막술을 시행하였다. The mandibular buccal frenum becomes a problem when its attachment is too close to the marginal gingival. Heavy buccal frenum mucogingivally results in insufficient attached gingiva, inadequate vestibular depth and also difficulty in eruption of mandibular premolar. The aim of this study is to demonstrate the effectiveness of apically positioned partial-thickness flap as adequate mothod in order to remove heavy buccal frenum and expose impacted teeth. The author presents the case of a 12-year-old boy. He had problems that was prolonged eruption of #34, #35 due to high pull buccal frenum. After space regaining for normal eruption of #34, #35, we performed apically positioned partial-thickness flap on #34,35 area. As a results, we confirmed that eruption of #34, #35 has been processed normally. And vestibular depth, position of buccal frenum and width of attached gingival was within a normal range. Decrease in muscle pull, adequate width of attached gingiva and increased vestibular depth can be expected from this treatment.

심혈관계 질환으로 관상질환 집중치료실에 입원한 환자들의 혜후 측정을 위한 APACHEⅢ점수 체계의 임상적 유용성

이공섭,이창선,최현주,홍종서,강지향,김도형,이민영,오인균,김병엽,김상억,김학찬,한승혜,이재용,지영우,안경주 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.8

욕창 환자에서 빈혈과 혈청 단백질의 변화

오상향,남기석,이상오,박상일,최은,이양균 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.1

Objective : To investigate the pathogenesis of anemia and serum protein alteration in patient with pressure ulcer and proper management method. Method : Eleven patients with pressure ulcer were investigated. To investigate the change of anemia and serum protein between pre- and post-treatment of pressure ulcer, we measured hemoglobin, hematocrit, serum iron, ferritin, transferrin, mean corpuscular volume(MCV), red cell count, serum albumin and globulin before and after healing of pressure ulcer. Result : There was significant increases of hemoglobin, hematocrit, red cell count, MCV, serum iron, ferrtin and transferrin after healing of pressure ulcer(p<0.05). The serum ablumin and A/G ratio were increased significantly(p<0.05). The total globulin and α1-globulin were decreased significantly(p<0.05). There was no statically significant relationship between the ulcer size and the degree of anemia and hypoalbuminemia. Conclusion : This research suggested that anemia and serum protein alteration in patient with pressure ulcer are thought result from chronic inflammatory process. So, anemia and alteration of protein does not require any treatment such as transfusion, iron and albumin supply.

척추 마취에서 소용량 Bupivacaine-Fentanyl 과 상용용량 Bupivacaine 의 비교

조영훈,이상곤,민병우,이지향,반종석 대한마취과학회 2001 Korean Journal of Anesthesiology Vol.41 No.4

Comparison of Small Dose Bupivacaine-Fentanyl with Conventional Dose Bupivacaine during Spinal Anesthesia Young-Hoon Cho, M.D., Ji-Hyang Lee, M.D., Sang-Gon Lee, M.D. Jong-Suk Ban, M.D., and Byung-Woo Min, M.D. Department of Anesthesiology, Daegu Fatima Hospital, Daegu, Korea Background: Although spinal anesthesia has a lot of advantages, it has some disadvantages or undesirable effects. Hypotension and unnecessarily long neural blockade are included among them. Although using small dose local anesthetics fairly solves these problems, it is insufficient to provide reliable surgical anesthesia by itself. Therefore the authors investigated whether such an opioid as fentanyl and small dose local anesthetic used together during spinal anesthesia can prevent hypotension and unnecessarily long neural blockade and provide reliable surgical anesthesia simultaneously. Methods: Thirty patients undergoing knee or below knee surgery were randomized into two groups. Group 1 received bupivacaine 5 mg combined with fentanyl 20 ㎍, and group 2 receive 10 mg bupivacaine. Hypotension was recorded and was treated with intravenous ephedrine. Sensory blockade, intraoperative analgesia, motor blockade and side effects were assessed. Results: NO significant differences were observed in values for assessing hypotension, sensory block-ade or intraoperative analgesia between the two groups. Also no significant differences were observed in intensity of the motor blockade and side effects between the two groups. However the duration of the motor blockade of group 1 was longer significantly than that of group 2. Conclusions: Small dose bupivacaine and fentanyl administered together intrathecally reduced duration of motor blockade and didn't augment of side effects and provided reliable anesthesia for surgery of knee or below knee simultaneously. (Korean J Anesthesiol 2001; 41: 423~427)

열공형과 비열공형 피질하 혈관성 치매에서 위험인자의 차이에 관한 비교 연구

배희준,정지향,유경호,나덕렬,김상윤,최경규,양동원,손의주,이상도,김재우,박경원,김응규,이재홍,박미영,한일우,함동석,최문성,하충건,최성혜,이애영,이병철,한설희 대한치매학회 2003 Dementia and Neurocognitive Disorders Vol.2 No.2

Backgrounds and Objectives: Vascular dementia is a group of dementing disoders arising from various stroke syndrome. Among these. subcortical ischemic vascular dementia (SIVD) is regarded as a relatively distinct clinical entity. However, MRI patterns of SIVD are not homogenous. In some patients, lacunes are dominant, and in others, subcortical white matter changes are. This study was designed to compare risk factor profiles between SIVD with and without multiple lacunes. Methods: We divided 47 subjects (22 males, mean age. 68 years) recruited from VADAPET (Multicenter Trial For Evaluation Of The Changes In the PET Images Of Subcortical Vascular Dementia Patient) study into two groups one with more than 5 lacunes in deep gray matter (lacune group) and the other with 5 or less(non-lacune group) Clinical characteristics and laboratory findings of two groups were compared. Results: Nineteen of 47 patients (40%) belonged to the lacune group. The lacune and non-lacune groups d d not differ in the following variables: age, hypertension, diabetes mellitus, hyperlipidemia heart disease, history of stroke or TIA, history of trauma or major surgery, family history of hypertension stroke, or dementia, age at diagnosis of dementia, body mass index, white blood cell count, ESR, CRP, fibrinogen, hemoglobin A1C, total cholesterol. LDL cholesterol creatinine, proteinuria, glucosuria, and microhematuria. However, male sex, smoking alcohol. hemoglobin, and HDL cholesterol were possibly associated more with lacune group SIVD than with non-lacune group (p<0 1) Multivariate analyses revealed that smoking, hemoglobin, and HDL cholesterol were independent predictors of SIVD with multiple lacunes Conclusion: Our study suggests that SIVD with multiple lacunes may be significantly different in smoking habits hemoglobin, and HDL cholesterol from SIVD without multiple lacunes.

Ropivacaine 을 이용한 경막의 마취시 Clonidine 병용의 효과

김종일,조영훈,이상곤,민병우,이지향,반종석 대한마취과학회 2001 Korean Journal of Anesthesiology Vol.41 No.4

Effects of Clonidine Added to Ropivacaine in Epidural Anesthesia Young-Hoon Cho, M.D., Ji-Hyang Lee, M.D., Sang-Gon Lee, M.D., Jong-Il Kim, M.D.^*, Jong-Suk Ban, M.D., and Byung-Woo Min, M.D. Department of Anesthesiology, Daegu Fatima Hospital, Daegu, Korea ^*Kim Jong Il Pain clinic, Daegu, Korea Background: Clonidine has been regarded as an adequate supplementary anesthetic during epidural anesthesia and has been used with local anesthetics such as bupivacaine or lidocaine to support the effects of these anesthetics. The authors would examine whether clonidine is an adequate supplementary anesthetic when it is used with ropivacaine during epidural ane-sthesia. Methods: Thirty-two healthy patients undergoing a hip or lower limb surgery were diveded into two groups. In group 1, 0.5% ropivacaine 15 ml was administered. In group 2, 0.5% ropivacaine 15 ml combined with clonidine 150 ㎍ was administered. Onset, duration and maximal height of sensory block were assessed. Sedation score, blood pressure and heart rate were measured. Results: Duration of sensory block of group 2 was significantly longer than that of group 1. Sedation score of group 2 was significantly higher than that of group 1. Blood pressure of group 2 was sig-nificantly lower thatn that of group 1 at 50 min, 70 min and 90 min after epidural injection. No significant differences were observed in onset of sensory block and heart rate between the two groups. Conclusions: The addition of clonidine to ropivacaine during epidural anesthesia prolonged duration of sensory block and produced useful sedation. It caused relatively stable hemodynamic changes. These results suggest that clonidine is an adequate supplementary anesthetic when it is used with ropivacaine during epidural anesthesia. (Korean J Anesthesiol 2001; 41: 428~433)

3차원 관결함에 대한 와전류탐상의 유한요소해석

이향범,원성연,신영길 한국비파괴검사학회 2000 한국비파괴검사학회지 Vol.20 No.3

본 논문에서는 3차원 형태의 결함을 가진 관에 대한 와전류탐상의 유한요소 수치해석에 대하여 연구하였다. 3차원 와전류탐상 문제를 기술할 수 있는 전자기 수치해석기법으로 3차원 유한요소법을 시행하였다. 맥스웰방정식으로부터 지배방정식을 구하고, 갤러킨 가중잔차법을 이용하여 유한요소정식화를 수행하였다. 해석대상으로는 INCONEL 600 증기발생기 전열관을 사용하였으며, 관의 내부 및 외부에 존재하는 결함을 모델링하여 수치해석을 수행하고, 임피던스로 표현되는 와전류탐상 신호를 계산하였다. 결함 시험편에 존재하는 결함에 대하여 본 논문에서 계산된 결과와 실험결과를 비교하였으며, 잘 일치하는 결과를 얻어 본 논문에서 제안된 수치해석 방법의 타당성을 검증하였다. 이를 바탕으로 결함의 깊이 변화(38%, 58%, 75%) 및 원주방향으로의 결함각도 변화(90˚, 180˚, 270˚, 360˚)에 따른 탐상신호를 계산하여 결함의 크기변화에 따른 신호의 변화특성을 살펴보았다. In this paper, a numerical analysis using the finite element method (FEM) is presented which models the eddy current testing (ECT) of tubes with 3-dimensional defects. For the description of 3-dimensional eddy current problems, the governing equation is derived from the Maxwell's equations. The 3-dimensional FEM formulation with hexahedral elements is carried out using the Galerkin weighted residual method. The INCONEL 600 steam generator tube with inner and outer diameter defects is adopted for the numerical analysis, and the ECT signal, which is the trajectory of the probe impedance, is calculated. For the verification of the numerical analysis method, results of numerical calculations and experiments are compared and they show good agreements. Based on this verification, several defect signals are predicted and their characteristics are investigated with the variation in the defect depth and the circumferential angle of the defect.

정사각형 장애물 주위 유동에서 역압력구배의 영향에 관한 실험적 연구

이학성,박계향,유상신 한국 항공대학교 항공산업기술연구소 1996 航空宇宙産業技術硏究所 硏究誌 Vol.6 No.-

An experimental study on the reattachment length behind the square obstacle under the adverse pressure gradient is conducted. An obstacle is fixed on the flat plate and the plate is installed in the test section of the wind tunnel. The upper wall of the wind tunnel is designed to be adjusted to impose the adverse pressure gradient on the flat plate. Tufts, ink-dot-liquid-film technique and a single hot wire are used to visualize and to determine the reattachment length of the flow field. Experimental results for the reattachment length of a model installed in the wind tunnel are strongly affected by the circumstances of the plate, installation, that is, whether sides of a model to the wind tunnel wall is open or completely closed. In order to ensure the two-dimensional flow on the plate sides of a model to the wind tunnel should be completely closed. The reattachment length of the square obstacle increase as the adverse pressure gradient increases.

소장 질환이 의심되는 환자에서 캡슐내시경과 CT 소견의 비교

이성수,홍성숙,김정훈,김연수,김진오,권석범,박성태,장윤우,최득린,권귀향 순천향의학연구소 2007 Journal of Soonchunhyang Medical Science Vol.13 No.1

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광중합기를 이용한 광학적 치아우식활성도 검사법

이난영,김미라,오유향,이창섭,이상호 大韓小兒齒科學會 2004 大韓小兒齒科學會誌 Vol.31 No.4

레이저와 플라스마 광, 할로겐 광 중합기를 이용하여 각 개인의 우식 활성도를 측정할 수 있는지를 규명하기 위해 7-8세 아동 45명을 대상으로 치아의 순면과 협면에 각 광원을 조사하고 특수 필터를 사용하여 초기 치아우식증으로 판별된 치아의 개수를 측정하여 기존의 우식활성도 측정방법인 dDfFtT rate와 mutans streptococci 측정법 Lactobacilli 측정법과 비교, 평가하고 그 특이도, 민감도, 예측력을 평가하였다. 1. 아르곤 레이저, 플라스마 광, 할로겐 광 조사시 육안검사시 보다 유의하게 많은 초기우식 병소가 관찰되었다(p<0.05). 2. 아르곤 레이저, 플라스마 광, 할로겐 광을 이용한 우식활성도 측정법은 dDfFtT rate와 양의 상관관계(γ= 0.42, 0.41, 0.39)를 보였다(p<0.01). 3. 기존의 우식활성도 측정방법을 기준으로 하여 평가한 결과 특이도와 민감도, 예측력은 모두 레이저가 가장 높았으며 플라스마 광, 할로겐 광 순으로 나타났다. 이상의 결과를 종합하여 볼 때 아르곤 레이저와 플라스마 광, 할로겐 광을 이용한 형광법은 모두 양호한 진단학적 지표를 보여줌으로써 향후 광학적 우식활성검사법으로 활용 가능성이 높을 것으로 사료된다. The purpose of this study was to develop a practical caries activity test by fluorescence using laser, plasma light and halogen light. The subjects of study were 45 children of 7-8 years old. Argon laser, plasma light and halogen light were irradiated to buccal or labial surface of all teeth. Fluorescence of initial carious lesion from teeth was observed through barrier filter and the number of teeth showing lesion was counted. Visual examination for the dDfFtT, mutans streptococci screening test and Lactobacilli colony counting were also done. Data analysis was accomplished by Axelsson's method. The result from the present study can be summarized as follows. 1. Laser, plasma light and halogen light could detect the initial carious lesions better than visual examination(p<0.05). 2. There was positive correlation between laser(r=0.42), plasma light(r=0.41), halogen light(r=0.39) and dDfFtT rate(p<0.01). 3. The specificity, sensitivity and predictive value was showed highest value in laser. but was showed favorable value in plasma light and halogen light. In regard to above results, laser, plasma light and halogen light all considered to be reliable method for determining individual caries activity. And they were also considered to be practical method because it would be simple, inexpensive, and time saving method.