한국인 6-17세 아동의 성장과 발육에 관한 준종단적 연구 : 제 2 세부과제 : 두개 및 안면 연조직의 성장변화 Part Ⅱ : Growth Change of Craniofacial Soft Tissue

박영철,이기준,이장열,한희경 대한치과교정학회 1996 대한치과교정학회지 Vol.26 No.4

현대의 교정치료에 있어 치열궁의 문제뿐 아니라 안모에 관한 비중이 높아지고 있고, 특히 안모형태를 결정하는 연조직의 중요성이 부각되고 있다. 과거의 교정학 발달을 살펴볼 때 두부방사선 계측사진을 통한 경조직성장에 관한 연구는 많이 이루어 졌으나 연조직 성장변화에 관한 연구는 아직 미비하다고 볼 수 있다. 특히 국내에서의 이러한 연구는 연구대상자 수와 분석방법, 계측방법에 있어서 상당한 다양성을 보이고, 성장변화에 대한 연구는 태부족한 현실이다. 이에 본 연구는 남, 녀 6세에서 17세 사이의 악안면 성장과 발육에 관한 조 종단적 연구의 일부로 시행되었으며 3년간에 걸쳐 전신질환이 없고 발육상태가 양호하며 정상교합을 갖는 6-17세의 남자 409명과 여자 436명의 아동을 대상으로 하였다. 이들 아동의 성장에 따른 안면부 연조직의 변화양상을 연구하기 위해 두개안면계측사진을 촬영하여 안모의 형태, 입술의 위치 및 형태, 코의 형태 그리고 입술의 두께 등을 계측한 후 연령별, 성별 평균과 표준편차를 구하고 도표로 표시하여 다음과 같은 결론을 얻었다. 결론 1. 일반적으로 안모의 형태(facial form)는 여자에서보다 남자에서 더 장기간 성장이 지속되었으며 안면의 상부에 비하여 안면 하부구조의 길이가 더욱 큰 증가율을 보였다. 2. 상순과 하순의 두께는 연령의 증가에 따라 큰 변화가 없었으나, 서양아동에 비하여 돌출된 입술의 양상을 보였다. 3. 코의 수평방향으로의 길이는 연령의 증가와 함께 증가하였다. 4. 하안면부의 수평적인 두께는 연령에 따라 증가하였으며 상순의 비저부위의 두께[A-Sn(FH)]의 성장이 다른 부위에 비하여 크게 증가하였다. Along with traditional goal of 'straightening teeth', today`s orthodontics put more and more emphasis on facial esthetics. Naturally, the importance of soft tissue, which dictates one`s facial form, is noticed. There have been many cephalometric studies on growth of hard tissue; however, only a few on that of soft tissue. In Korea, various methods of sampling, measuring and analysing were used to study soft tissue changes, and yet, soft tissue changes along with process of normal growth have not been studied. The author carried out this study as a part of semi-longitudinal study on craniofacial growth and development of Korean children from ages of six to seventeen. 409 boys and 436 girls who`d had no systemic disease for the last three years and shown normal developmental and occlusal status were chosen as subjects. Cephalometric X-rays were taken of each subject, and facial form, lip position & form, nose form, and lip thickness were measured. Mean values and standard deviations were calculated according to age and gender, and figures and tables were drawn accordingly. The following results were obtained: 1. In respect to facial form, boys showed growth for longer period compared to girls. Also, lower face showed higher growth rate than upper face. 2. There was not much change in thickness of upper and lower lips with age; however, they appeared more prominent compared to caucasian children. 3. Nose grew horizontally with age. 4. Horizontal thickness of lower face increased with age, and upper lip thickness at nose base[A-Sn(FH)] showed more growth than anywhere else.

경부에 발생한 낭포성 활액종의 증례보고

이장렬,신인숙,박창서,조정신 大韓口腔顎顔面 放射線學會 1993 Imaging Science in Dentistry Vol.23 No.1

Cystic hygroma is a special form of lymphangioma. It most often occurs in the neck of children. We observed a 14-year-old male whose chief complaint was a abnormal swelling of the right mandibular angle area. The computerized tomography showed the well-defined nonenhancing cystic mass on right submandibular gland areaand anterior triangle of the neck. The histopathologic fidings exhibited the multiloculatedfluid-filled cysts, which are lined a flattened layer of endothelial cells with foci of lymphocytes found lying adjacent to the lining. After evaluation of above findings, the mass was diagnosed as a cystic hygroma in the neck.

관동맥 우회로술 중 경식도 심초음파도로 관찰한 도부타민 투여후와 우회로술후의 좌심실 국소벽운동

김희열,김종진,윤호중,유기동,박지원,이길환,노태호,채장성,김재형,홍순조,최규보 대한순환기학회 1997 Korean Circulation Journal Vol.27 No.8

십이지장과 대장을 동시에 침범한 결핵 1예

이만재,박치영,곽재정,유보열,기장도,박찬국,김만우,김정용 조선대학교 1995 The Medical Journal of Chosun University Vol.20 No.1

Tuberculosis of duodenum is so rare and is usually secondary to pulmonary or intestinal tuberculosis . It is difficult to diagnose duodenal tuberculosis in clinical and radiologic findings due to its non-specific symptoms and inconsistent lesion. The diagnosis was made on the basis of the histological study of the endoscopic biopsy and resected surgical specimen. so we report a case of tuberculosis of duodenal bulb and of ascending colon with, the brief review of the literatures.

과도한 운동으로 발생한 횡문근융해증에 의한 급성신부전증 1예

문철호,류보열,모성환,김태종,기장도,박용관,김용환,정종훈 조선대학교 1995 The Medical Journal of Chosun University Vol.20 No.1

Rhabdomyolysis may be defined as a clinical and laboratory syndrome which releases muscle cell contents into the plasma, such as creatine phosphokinase, due to skeletal muscle injuries. It can be the result of many diverse causes including muscle disease, ischemia, genetic disorder, metabolic disorder, infectious disease, drugs, comatose state, trauma or vigorous exercise that can lead to acute renal failure as a complication. Since first reported in 1941, rhabdomyolysis-induced acute renal failure has been documented many times, and the major causes of this disease are carbon monoxide poisoning, snake bites, and etc in Korea Reports of acute renal failure after exercise-related rhabdomyolysis with myoglobinemia are rare. We report a case of acute renal failure caused by exercise-related rhabdomyolysis in a 20 year old man.

자동차용 실리콘 가속도센서의 개발(Ⅱ)

이종현,신장규,이상룡,천희곤,조찬섭,심준환,류인식,박석홍,허정준,박기열 경북대학교 센서기술연구소 1994 연차보고서 Vol.1994 No.-

자동차의 air-bag 장치에 실용될 수 있는 압저항형 단결정 실리콘 가속도센서 칩을 개발하기 위하여 결정 실리콘 미세구조의 제조방법을 확립하고, 단위공정의 검증을 통하여 일괄공정에 의한 PROTO-TYPE 칩을 만드는 기술을 연구하였다. 단결정 실리콘 미세구조는 선택확산법을 이용하여 정확히 선택된 영역에만 air-gap을 형성하여 미세구조의 측면식각을 방지하는 선택확산법에 의한 실리콘 마이크로머시닝 기술로 제조하였다. 일괄공정을 위한 단위공정확립을 위하여 PROTY-TYPE 8빔 브릿지형 가속도 센서를 제조하였다. 제조된 칩의 가속도에 따른 출력전압은 선형성을 나타내고 있으며, 감도는 약 50 ㎶/V·g로 나타났다. 이 감도는 50G용 가속도센서의 사양을 만족하지 못했다. 이는 공정에 의한 문제라기 보다는 가속도센서의 시뮬레이션에 의해 설계한 구조가 이미 원하는 감도에 못 미친다는 것으로 생각된다. 따라서 2차 공정으로 제조될 가속도센서의 파라미터를 SuperSAP 유한요소 패키지를 이용하여 실리콘 미세구조부의 파라미터에 따른 특성을 시뮬레이션하였다. 설계된 50G용 가속도센서의 mass Pad의 반경 및 빔 길이, 빔 폭, 빔 두께, 그리고 mass의 각 파라미터 값은 700 ㎛, 120 ㎛, 5 ㎛, 1.0 ㎎ 이었다. 반도체 공정기술, 관성질량 제조법 및 선택확산을 이용한 마이크로머시닝을 사용하여 일괄공정으로 8빔 브린지형 가속도센서를 제조하였다. We researched the establishment of the silicon microstructure fabrication technique to develop a piezoresistive type silicon acceleration sensor chip and the technique to make a proto-type chip by the verification of the unit-process. Silicon microstructure is fabricated silicon micro-machining by selective diffusion method. This method prevent a side-etching of microstructure because selective diffused region is only formed an air-gap. We fabricated a proto-type 8-beam bridge-type acceleration sensor to establish the unit-process for the batch-process. The output voltage of the chip represented linearity with acceleration, and the sensitivity was about 50 ㎶/V·g. But this sensitivity dosen't satisfy the requirements of a practical acceleration sensor. The cause of this result is assumed not process problem, but the structure designed by simulation isn't suitable already. Threfore, the characteristics of parameters of the acceleration sensor that will be fabricated by 2nd-process is simulated by SuperSAP finite-element package. The determined parameter values of beam length, beam width, beam thickness, mass, and mass radius are 120 ㎛, 5 ㎛, 1.0 ㎎, and 700 ㎛, respectively. We fabricated 8-beam bridge-type acceleration sensor by batch-process using a semiconductor process technique, proof-mass fabrication method, and micromachinig using selective diffusion.

치성각화낭과 법랑모세포종의 임상 및 방사선학적 감별진단

정호걸,이장렬,김기덕,박창서 大韓口腔顎顔面 放射線學會 2000 Imaging Science in Dentistry Vol.30 No.4

Purpose : To clarify the clinical and radiologic parameters that can be used to differentiate odontogenic keratocyst and ameloblastoma Materials and Methods : The records of 46 patients of ameloblastoma and 48 patients of odontogenic keratocyst at the Yonsei University Dental Hospital during the period of 1979 to 1995 were retrospectively reviewed. As a possible means for differentiating between the odontogenic keratocyst and ameloblastoma, the clinical parameters and the radiologic parameters were evaluated. Results : In the clinical parameters, there was no significant difference in age, sex, and sign and symptoms (p 〉 0.05). In the radiologic parameters, there was significant difference in site, shape of the lesion, and external root resorption of adjacent teeth (p 〈 0.05). Conclusion : The site, shape of the lesion, and external root resorption of adjacent teeth can be the parameters to differentiate odontogenic keratocyst and ameloblastoma, but a definite differentiation of these two lesions needs a more specialized imaging modality. (Korean J Oral Maxillofac Radiol 2000;30:249-254)

치성각화낭 : 임상 및 방사선학적 고찰

이지연,이장렬,김기덕,박창서 대한구강악안면방사선학회 2000 Imaging Science in Dentistry Vol.30 No.3

Purpose . To determine whether the significant relationship exists between radiographic appearance, whether it is unilocular or multilocular, and its corresponding clinical and histologic features by examining the odontogenic keratocyst clinically, radiologically and histologically. Materials and Methods : This study was conducted on 48 cases of odontogenic keratocyst from the files of Dental Hospital, Yonsei University for the years 1982 through 1995. Results and Conclusions : The mean age of patients was 30.5 years in the unilocular group and 35.5 years in the multilocular group. The male to female ratio was 1 : 1.06 in the unilocular group and 1 . 1.75 in the multilocular group. The chief complaint was swelling in both groups(unilocular 35.1%, multilocular 54.5%). In the occurrence site, the border of the lesion, the displacement and external root resorption of the adjacent teeth, there were no statistically significant difference between the unilocular group and multilocular group, but in the border type, there was statistically significant difference (x2-test, p<0.05). Two recurred cases were observed among 11 cases of odontogenic keratocyst. One was unilocular case and the other was multilocular case. (Korean J Oral Maxillofac radiol 2000; 30: 199-205)

심인성 색전 요인이 없는 뇌경색 환자에서 경식도 심초음파와 Acoustic Quantification을 이용한 대동맥 탄성의 평가

이종민,윤호중,임효영,박지원,김휘열,전희경,문건웅,정욱성,채장성,김재형,최규보,홍순조 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.8

심실 조기 수축의 발생 부위 및 연결 간격의 차이에 따른 혈역학적 변화

진승원,김재형,노태호,조은주,김희열,이만영,김종진,박준철,채장성,홍순조,최규보 대한순환기학회 1999 Korean Circulation Journal Vol.29 No.7