Hemophilus Vaginalis 地域 菌株의 生物學的 性狀에 관한 硏究

鞠允鎬,李光浩,張友鉉 최신의학사 1980 最新醫學 Vol.23 No.7

전후방적 분류에 따른 하악 형태 및 Spee 만곡에 대한 antegonial notch의 관계 평가

손주현(J-H Son),김영호(YH Kim),국윤아(YA Kook) 대한치과의사협회 2007 대한치과의사협회지 Vol.45 No.8

The aim of this study was to investigate the relationship between the mandibular antegonial notch and the mandibular morphology, and the curve of Spee in anteroposterior skeletal relationship. Pre-treatment lateral cephalograms were obtained from 80(male 34, female 46) adult orthodontic patients and the samples were classified into 3 categories by ANB angle(0°≤ANB<4° Class Ⅰ, 4°≤ANB Class Ⅱ, ANB<0° Class Ⅲ). The curve of Spee was measured directly from the pre-treatment mandibular study cast of each patient included in this study. Pearson correlation coefficient test and multiple regression analysis in each group revealed the following results; 1. Antegonial notch depth was positively correlated with both lower anterior facial height(ANS-Me) in sketetal Class Ⅰ, Ⅱ and Ⅲ groups and Id-Me height in skeletal Class Ⅰ and Ⅱ groups. 2. A statistically significant negative correlation was found between the depth of the antegonial notch and the curve of Spee in the Class Ⅲ group. 3. Significant relationship was not found between the antegonial notch depth and any of the other cephalometric variables such as mandibular body length(Go-Gn) and ramus height(Co-Go). As antegonial notch depth increased, more vertical growth of the mandible was observed. Antegonial notch can be used as a predictor of vertical mandibular growth in the diagnesis and treatment planning of malocclusion.

Practice guideline for the performance of breast ultrasound elastography

이수현,장정민,조나리야,구혜령,이안,김승자,육지현,손은주,최선형,국신호,정진,차은숙,박정선,정해경,고경희,최혜영,류은비,문우경,한국유방초음파연구회 대한초음파의학회 2014 ULTRASONOGRAPHY Vol.33 No.1

Ultrasound (US) elastography is a valuable imaging technique for tissue characterization. Two main types of elastography, strain and shear-wave, are commonly used to image breast tissue. The use of elastography is expected to increase, particularly with the increased use of US for breast screening. Recently, the US elastographic features of breast masses have been incorporated into the 2nd edition of the Breast Imaging Reporting and Data System (BI-RADS) US lexicon as associated findings. This review suggests practical guidelines for breast US elastography in consensus with the Korean Breast Elastography Study Group, which was formed in August 2013 to perform a multicenter prospective study on the use of elastography for US breast screening. This article is focused on the role of elastography in combination with B-mode US for the evaluation of breast masses. Practical tips for adequate data acquisition and the interpretation of elastography results are also presented.

파제트병으로 인한 외이도 협착 1예

국진호,채수량,송지남,서재현 대한이비인후과학회 2011 대한이비인후과학회지 두경부외과학 Vol.54 No.5

Paget’s disease is a localized bone disorder that affects widespread areas of skeleton characterized by increased bone remodeling. It is a chronic, progressive disease of unknown etiology. The pathologic process is initiated by hyperactive osteoclastic bone resorption followed by a compensatory increase in the osteoblastic new bone formation. New pagetic bones are disorganized and more susceptible to deformities and fractures. Paget’s disease can affect one or multiple bones in the systemic skeleton, including the temporal bone. We experienced a case of chronic otitis media combined with an external auditory canal stenosis due to Paget’s disease of the temporal bone. We report clinicopathologic features of this rare case.

자동차 급발진 방지를 위한 감시 시스템의 개발

국종연,박태건,서진성,안지훈,여승현,최관순 순천향대학교 부설 산업기술연구소 2021 순천향 산업기술연구소논문집 Vol.27 No.2

There are various problems with automobiles across the world. In particular, as the number of domestic automatic transmission vehicles increases, the sudden acceleration problem has also become important issues. There are few cases in which it is clearly judged that it is a sudden acceleration among presumed domestic sudden acceleration accidents. Sometimes individuals often have to prove that it is a sudden acceleration accident, and not their fault. However, it is not easy for an individual to prove it. Therefore, we created this module to help drivers to obtain evidence by the process of identifying the driver's intended acceleration. The speed is measured in real time along with the normal operation speed of the vehicle and is stored in the database. We made module to give drivers a voice alarm about how to act when the problem occurs.

Mycobacterium tuberculosis 파쇄 추출항원에 대한 단세포군 항체의 생산 및 그 특성에 관한 연구

국윤호 ( Yoon Hoh Kook ),조명제 ( Myung Je Cho ),황응수 ( Eung Soo Hwang ),김익상 ( Ik Sang Kim ),차창룡 ( Chang Yong Cha ),장우현 ( Woo Hyun Chang ),이승훈 ( Seung Hoon Lee ),김상재 ( Sang Jae Kim ),한용철 ( Yong Chol Han ) 대한결핵 및 호흡기학회 1984 Tuberculosis and Respiratory Diseases Vol.31 No.3

경미로 접근법을 통해 제거한 추체골의 광범위한 진주종 2예

서재현(Jae-Hyun Seo),최진(Jin Choi),국진호(Jin-Ho Kook),장기홍(Ki-Hong Chang) 대한두개저학회 2008 대한두개저학회지 Vol.3 No.2

Cholesteatoma of the petrous bone is rare lesion, which may be congenital or acquired in nature, and presents difficulties in its diagnosis and treatment. The availability and the advances in imaging techniques render petrous bone cholesteatoma feasible to diagnose and manage. The removal of the petrous bone cholesteatoma is not easy for the anatomical difficulty of approach. The surgical aim should be complete removal of the cholesteatoma with preservation of existing neuronal function and prevention of CSF leakage. We describe two cases of extensive petrous bone cholesteatoma in which complete removal was accomplished using translabyrinthine approach. One case is supralabyrinthine type petrous cholesteatoma with antero-medial extension and the other is massive labyrinthine type. In both cases, complete removal was possible by using translabyrinthine approach.

성견에서 표면처리된 교정용 마이크로임플랜트의 골 접촉률 및 동요도

박승현,김성훈,류준하,강윤구,정규림,국윤아 대한치과교정학회 2008 대한치과교정학회지 Vol.38 No.6

The purpose of this study was to evaluate the mobility and ratio of the bone-implant contact (BIC) of a sandblasted, large grit and acid-etched (SLA) orthodontic micro-implant. Methods: Ninety-six micro-implants (48 SLA and 48 machined) were implanted in the upper and lower buccal alveolar bone, and palatal bone of four beagle dogs. Two weeks after surgery, orthodontic force (150 - 200 g) was applied. Two beagles were sacrificed at 4-weeks and the other two at 12-weeks. Histomorphometric comparisons were made between the SLA experimental group and the machined micro-implant as a control group to determine the ratio of contact between the bone and implant. Micro-implant mobility was also evaluated using Periotest. Results: Periotest values showed no statistically significant difference in the upper alveolar and palatal bone between groups except for the lower buccal area. BIC in the upper buccal area showed no significant difference between groups both at 4-weeks and 12-weeks. However, both the groups showed a significant difference in BIC ratio in the rest of the experimental areas between 4 weeks and 12 weeks. The experimental group showed active bone remodeling around the bone-implant interface compared to the control group. Conclusions: There were significant differences in the BIC and the Periotest values between the surface-treated and machined micro-implants according to bone quality in the early stage. 본 연구는 비글견에 식립된 sandblasted, large grit and acid-etched (SLA) 표면처리된 교정용 마이크로임플랜트와 평활면 마이크로임플랜트에 교정력을 가한 후 시간 경과에 따른 동요도와 골접촉률의 차이를 규명하기 위해 시행되었다. 비글 성견 네 마리를 이용하여 상, 하악 협측과 구개측 골에 대해 SLA 표면처리된 표면처리군 48개, 평활면의 비처리군 48개의 마이크로임플랜트 96개를 식립하고 2주의 치유기간 후 교정력(150 - 200 g)을 지속적으로 가했으며 식립 4주 후에 두 마리를 희생시키고, 12주 후에 나머지 2마리를 희생시켰다. 표면처리군과 비처리군 간의 마이크로 임플랜트의 동요도와 골과 임플랜트 간 접촉률을 조직학적인 측면에서 측정 비교하여 다음과 같은 결과를 얻었다. 상악 협측과 구개측에서는 표면처리군과 비처리군의 동요도에서 유의성 있는 차이가 없었으나 하악협측에서는 표면처리군이 유의하게 안정적인 동요도를 보였다. 마이크로임플랜트와 인접골 간 접촉률은 상악 협측에서는 4주와 12주 모두 표면처리군과 비처리군 간에 유의한 차이가 없었으나 하악 협측과 구개측의 경우 4주와 12주 모두 표면처리군이 비처리군에 비해 유의하게 높은 접촉률을 보였다. 표면처리군은 비처리군에 비해 임플랜트 주변에서 활발한 골개조가 관찰되었으며 모든 군에서 이물반응은 관찰되지 않았다. 본 연구를 통해 SLA 표면처리된 마이크로임플랜트는 평활면 마이크로임플랜트에 비하여 식립 초기에는 식립 부위에 따라 유의하게 높은 인접골 간 접촉률과 동요도의 안정성을 보임으로써 다양한 크기와 방향의 교정력의 적용이 가능할 것이라 생각한다.

성견에서 표면처리된 교정용 마미크로 임플랜트의 골 접촉률 및 동요도

박승현,김성훈,류준하,강윤구,정규림,국윤아,Park, Seung-Hyun,Kim, Seong-Hun,Ryu, Jun-Ha,Kang, Yoon-Goo,Chung, Kyu-Rhim,Kook, Yoon-Ah 대한치과교정학회 2008 대한치과교정학회지 Vol.38 No.6

The purpose of this study was to evaluate the mobility and ratio of the bone-implant contact (BIC) of a sandblasted, large grit and acid-etched (SLA) orthodontic micro-implant. Methods: Ninety-six micro-implants (48 SLA and 48 machined) were implanted in the upper and lower buccal alveolar bone, and palatal bone of four beagle dogs. Two weeks after surgery, orthodontic force (150-200 g) was applied. Two beagles were sacrificed at 4-weeks and the other two at 12-weeks. Histomorphometric comparisons were made between the SLA experimental group and the machined micro-implant as a control group to determine the ratio of contact between the bone and implant. Micro-implant mobility was also evaluated using $Periotest^{(R)}$. Results: Periotest values showed no statistically significant difference in the upper alveolar and palatal bone between groups except for the lower buccal area. BIC in the upper buccal area showed no significant difference between groups both at 4-weeks and 12-weeks. However, both the groups showed a significant difference in BIC ratio in the rest of the experimental areas between 4 weeks and 12 weeks. The experimental group showed active bone remodeling around the bone-implant interface compared to the control group. Conclusions: There were significant differences in the BIC and the Periotest values between the surface-treated and machined micro-implants according to bone quality in the early stage.

하안면 고경 변화의 인지도에 관한 연구

박승현,김영진,국윤아 대한치과교정학회 2005 대한치과교정학회지 Vol.35 No.3

교정치료 결과 나타나는 안모의 개선에 대하여 환자들이 느끼는 인지도에 관한 정보를 교정의사들이 이해하여야 하며, 진단과 치료계획 수립 시 이에 대한 기준이 중요하다. 이에 본 연구는 하악의 수직적 변화를 통해서 야기되는 측모 및 정모의 변화를 인지할 수 있는 최소한의 수직적 변화량을 알아보고자 보기좋은 안모를 갖는 가상의 안모를 컴퓨터 영상으로 정모와 측모를 만들고 하안면부인 stomion에서 chin까지 1, 2, 3, 4 mm변화시킨 디지털 영상을 이용하여 40명의 미술학도를 관찰자로 인지도 조사를 하였다. 그 결과는 환자가 수직고경의 변화를 인지하게하기 위해서는 측모에서 최소한 2 mm 이상, 정모에서 3 mm 이상의 변화가 필요하였으며, 하악의 수직적 변화에 대한 인지도는 정모의 변화보다는 상대적으로 측모의 변화에서 높았다. 또한 치료 전이나 치료과정에서 환자가 접하게 될 수 있는 안모 변화에 대한 사전 정보는 변화에 대한 인지율을 현저하게 높여 주었다 Understanding the level of a person's perception of changes that have occurred on the face after orthodontic treatment is critical to the process of orthodontic diagnosis and treatment planning. The purpose of this study was to determine the level of perception of profile and frontal changes in lower facial height. Forty students attending art school participated in a study evaluating the level of a participant's perception of changes in the lower facial height. Participants compared computer-graphic frontal and profile photographs with balanced proportions and photograph simulations of 1, 2, 3, and 4 mm changes in lower facial height from stomion to the chin. At least a 2 mm change in lower facial height for the profile view and 3 mm in the frontal view was needed to be perceived after orthodontic treatment. The level of a person's perception of the change in lower facial height was more sensitive in the profile view than in the frontal view, and information about facial changes given prior to evaluation enhanced the level of perception.