삭골(Bone shaving)한 골의 재생에 골막이 미치는 영향

강진성,권건영,송중원,오석희,한기환 大韓成形外科學會 1989 Archives of Plastic Surgery Vol.16 No.5

Many orientals have a more prominent malar eminence and mandibular angle than westerners so their faces often look rough and unattracive. In recent years more people want to have a more attractive and beautiful face due to economic prosperity and westernization. Therefore people receiving bone shavings or osteotomies for cosmetic purposes are increasing. The effects of the periosteum on lay bone grafts were investigated but the effect of the periosteum after bone shaving or osteotomy is little known. The authors investigated the effect of the periosteum on the regeneration of bone in membranous and endochondral bone of rabbits. Bony defects each measuring about 5.0×5.0×1.5mm were made on the left and right sides of the parietal bones of 15 rabbits and femurs of 15 other rabbits respectively. The periosteum was preserved on the left and removed on the right. The following results were obtained: 1) The average thickness of the regenerated bones in groups 2 δ4 were thinner than those in groups 1 δ 3 at 4, 8 and 12 weeks postoperatively but the differences of thickness were statistically significant at onl 4weeks postoperatively(P<0.05). 2) The histological findings in groups 2 δ 4 showed lesser regeneration of the shaved bone than those in groups 1 δ 3 at 4, 8 and 12weeks postoperatively. 3) There was no significant increase in the thickness of the regenerated bone after 8 weeks postoperatively in all groups. 4) At 12 weeks postoperatively, the thickness of the regenerated bone in all groups was over 70% of the thickness of the resected bone. In summary, the authors found that it is important to perform overcorrection and resect the periosteum simultaneously in bone shaving to prevent the unwanted regeneration.

경골 골수강내 금속정 삽입술시 적절한 도입부에 대한 해부학적 분석

강수용,이은우,강기서,이한준,정호중,정평호 대한골절학회 2004 대한골절학회지 Vol.17 No.2

절단된 안면신경의 일차문합술

강진성,한기환,송중원,오재훈 大韓成形外科學會 1991 Archives of Plastic Surgery Vol.18 No.4

Because the facial nerve innervates the muscles of facial expression, injury to this nerve may cause social, psychological, and functional disability. For this reason, a transected facial nerve must be restored appropriately by any one of a variety of approaches. The choice of anastomosis should be based upon the cause, location of transection and the length of time since paralysis was first noted. Although there are numerous methods of anastomosis, none will result in complete recovery. And thus, the method must be carefully selected and tailored to suit each patient. During the 20 months between July 1988 and February 1990. We have been operated (immediate end to were epineurial repair) in 20 patients. 15 of 20 aged 23 to 60. There were 13 males and 2 females. The nerve injury was unilateral in all cases. One of 15 received a nerve graft harvested from the greater auricular nerve. 12 of 15 Stensen's duct injuries were associated with served zygomatic branch and/or buccal branch. So an end to end anastomosis of the duct was performed simultaneously with anastomosis of the nerve. Failure to repair the duct resulted in a salivary fistula in two cases. To show the success of the procedure, EMG(electromyogram) and NCV(nerve conduction velocity) were done at least 6 months following surgery. The findings have been considered good to excellent and the reinnervated muscles have showed symmetric movements in all cases.

전두사골 수막뇌류 및 Saethre-Chotzen증후군에 의한 안와격리증의 치험

송중원,한기환,박성근,강진성 大韓成形外科學會 1991 Archives of Plastic Surgery Vol.18 No.2

본 교실에서는 전두사골 수막뇌류에 의한 안와격리증 2례는 두개내 접근으로 수막뇌류 절제술을 실시함과 동시에 두 개외 접근으로 안와내벽 및 외벽 절골술로써 교정하였으며 Saethre-Chotzen 후군에 의한 1례는 두개골 성형술과 U형 절골술로 교정하여 비교적 만족할 만한 결과를 얻을 수 있었기에 보고하는 바이다. The authors experienced two cases of mild hypertelorism with frontoethmoidal meningoencephalocele and one with Saethre-Chotzen syndrome. The first and second cases, which had nasofrontal and nasoethmoidal meningoencephalocele respectively, were corrected by resection of the meningoencephalocele, repair of the dura, and calvarial bone graft intracranially, and combined medial and lateral orbital wall osteotomy with augmentation rhinoplasty with calvarial bone grafts extracranially. To stabilize the orbital contents medially, a split osteotomy of the lateral orbital wall and interpositional bone graft were done in order to avoid step deformity of the lateral orbital rim. The third case, Saethre-Chotzen syndrome characterized brachycephaly, hypertelorism, ptosis of the eye lid, maxillary hypoplasia, lower set frontral hair line, and partial cutaneous syndactyly was corrected by a Modified Marchac technique for remodelling the forehead and a subcranial U-osteotomy for mild hypertelorism. Maxillary hypoplasia was corrected effectively by advancement on the medial portion of the U-shaped bony segment. Augmentaton rhinoplasty with calvarial bone graft and chip bone grafts on the anterior nasal spine was done simultaneously. A large amount of nasal bone grafts in two cases were absorbed, and then augmentation rhinoplasty using silicone implant was performed after 6 months, 12 months respectively. In mild hypertelorism with associated deformity, a extranial osteotomy with augmentation rhinoplasty and correction of associated deformities can offer good aesthetic results.

각종 치과레이저의 Streptococcus mutans에 대한 증식 기능억제 효과

한강석,국중기,유소영,김화숙,박종휘,박현동,이상훈 大韓小兒齒科學會 2003 大韓小兒齒科學會誌 Vol.30 No.3

레이저의 구강내 산 생성 세균인 S. mutans에 대한 증식 및 기능 억제효과를 평가하기 위하여 S. mutans KCTC 3065가 포함된 세균 pellet에 Er:YAG 레이저와 Nd:YAG 레이저를 비접촉식 방법으로, 조사세기 50mJ, 조사시간 5초, 그리고 pulse repetition rate를 각각 10Hz와 30Hz로 하여 조사하고 세균 군락수, 산 생성능, 불용성 세포외다당류의 합성량을 측정하여 다음과 같은 결과를 얻었다. 1. Chinese ink로 photosensitization을 시행한 후 Nd:YAG 레이저를 조사한 경우가 S. mutans의 증식을 가장 많이 억제하였으며 Er:YAG 레이저 조사도 증식을 억제하였다. Chinese ink를 사용하지 않고 ND:YAG 레이저를 단독으로 조사한 경우는 S. mutans의 증식을 억제하지 못하였다. 2. Chinese ink로 photosensitization을 시행한 후 Nd:YAG 레이저를 조사한 경우가 일정기간 동안 S. mutans의 산생성능을 가장 많이 억제하였으며 Er:YAG 레이저 조사도 산 생성능을 억제하였다. Chinese ink를 사용하지 않고 Nd:YAG 레이저를 단독으로 조사한 경우는 S. mutans의 산 생성능을 억제하지 못하였다. Er:YAG 레이저와 Chinese ink로 photosensitization을 시행한 후 Nd:YAG 레이저를 조사한 경우는 pulse repetition rate가 클수록 전반적으로 세균의 산생성능을 더 많이 억제하였다. 3. 레이저 조사는 S. mutans의 불용성 세포외다당류의 합성에 영향을 미치지 못하였다. 이상의 결과로 보아 Er:YAG 레이저와 Chinese ink로 photosensitization을 시행한 후의 Nd:YAG 레이저 조사는 일정시간 동안 S. mutans의 증식과 산 생성능을 억제시키므로써 치아우식증 예방효과를 얻을 수 있다고 사료되나 억제효과가 오래가지 않아 임상적으로 효과를 얻기 위해서는 자주 조사를 해주어야 한다는 문제점을 안고 있어 임상적으로 치아우식증 예방이란 단독 목적으로 사용하기에는 실용성이 크지 않다고 사료된다. This was performed to evaluate the inhibitory effect of laser on the growth of S. mutans. The bacterial pallets containing S. mutans KCTC 3065 were irradiated with Er:YAG laser and Nd:YAG laser by non-contact method at an intensity of 50mJ for 5 sec with the pulse repetition rates of 10Hz and 30Hz, respectively. The following results were obtained on colony count, acid producing ability, and the amount of insoluble extracellular polysaccharide synthesis. 1. The irradiation of Nd:YAG laser after photosensitization with Chinese ink inhibited the proliferation of S. mutans the most, and the irradiation of Er:YAG also inhibited the proliferation. However, the irradiation of Nd:YAG laser alone could not inhibited the proliferation of S. mutans. The pulse repetition rate did not affect significantly on the proliferation of bacteria in overall. 2. The irradiation of Nd:YAG laser after the photosensitization with Chinese ink inhibited the acid production of S. mutans the most for a certain period of time. Er:YAG laser also inhibited acid production. When Nd:YAG laser was used alone, the acid production of S. mutans was not been inhibited. The irradiation of Nd:YAG laser after photosensitization with Chinese ink inhibited the acid production ability of bacteria the most as the pulse repetition rate increased. 3. Laser irradiation did not inhibited the synthesis of insoluble extracellular polysaccharide of S. mutans. From these results, we conclude that the irradiatioin of Er:YAG laser and Nd:YAG laser after photosensitization with Chinese ink would inhibit the proliferation and acid production by S. mutans, which may prenent dental caries. However, this effect does not last long time so that the laser irradiation should be repeated frequently in order to obtain clinical effect; thus, this laser irradiation would not have a clinical usefulness in preventing dental caries when used solely.

Melandrin의 방향족 유도체 합성에 관한 연구

임중기,이강노,함원훈,이상인 성균관대학교 약학연구소 1992 成均藥硏論文集 Vol.4 No.1

Melandrin, as a possible phytoalexin, which is expected to have the various pharmacological activities; antibacterial, antifungal and antiviral activity, was isolated in 1987 by Woo from Melandrin firmum (Caryophyllaceae). The synthesis of melandrin derivatives has been accomplished by the reaction of 5-hydroxy anthranilic acid ethyl ester with acid chlorides and then by hydrolysis of ethyl ester.

현행 중학교 과학 실험·실습교육에 대한 교사들의 견해와 개선방안

이윤종,기우항,김영호,정원우,양승영,강용희,안병호,임성규,윤일희,김중욱,강동진 경북대학교 과학교육연구소 1996 科學敎育硏究誌 Vol.20 No.-

The status of facilities, management of the experiment, practices, and Science education teaching method in middle school have been investigated. The present status and reasonable management of middle school science education have been grasped from the questionaires. The results are as follows : The reasonable management for expeiments and practices of science education were scanty in the middle school around the urban and rural schools owing to the shortage of facilities and equipments, crowded class, excessive classes, work for teachers, excessive contents of present textbook and insufficience of administrative support etc. The current teaching method of middle school science has emphasized knowledge. This fact does not satisfy the objective of learning due to lack of teaching method. Desirable directions for the improvement of present status of middle school science education were proposed in this paper.

壓挫시킨 家兎 軟骨의 生存

최동원,송중원,한기환,강진성,정재홍 大韓成形外科學會 1990 Archives of Plastic Surgery Vol.17 No.2

The deviated nose regardless whether it is due to traumatic or congenital origin results in troublesome symptoms coming from airway obstruction. Numerous methods for straightening the severely deviated septum have been described by many authors but none is wholly satisfactory. A new method that the crooked septal cartilage is being flattened by crushing and reimplanting into the septal pocket is introduced. The authors are desirous of knowing about the fate of the crushed cartilage graft. Forty rabbits weighing 2 to 3 kg were divided into 2 groups, septal group and conchal group. The cartilages were obtained from the nasal septum and ear; these cartilages were placed under the paraspinal subcutaneous tissue. Prior to paraspinal iplantation the obtained cartilage was halved; one piece of cartilage being crushed by Cottle's cartilage crusher before its placement into the recipient site and the other was placed without crushing. The cartilage specimens were removed at 6 and 12 weeks postoperatively and these were examined by the naked eyes and light microscope. The results were as follows: 1. The fissures and cleavages of cartilage developed during crushing process are restored to normal by 6 weeks postoperatively. 2. All of the ujncrushed cartilages remained viable in the subcutaneous pockets. The crushed cartilages not only appeared viable but also induced a new cartilage formation beneath the perihondrium at 12 weeks postoperatively and the thickness being increased compaired to the cartilage before crushing. 3. Crushed cartilage remained flat at 12 weeks postoperatively. 4. The degree of strength of the crushed cartilage is increased due to new cartilage formation and fibrosis of perichondrium at 12 weeks postoperatively. These findings support the clinical impression that the crushed autogenous cartilage is viable and can be reshaped according to the contour of the recipient site.

지역사회획득 폐렴의 치료지침 권고안

송재훈,정기석,강문원,김도진,배현주,서지영,심태선,안중현,안철민,우준희,이남용,이동건,이미숙,이상무,이영선,이혁민,정두련,지역사회획득 폐렴 치료지침 제정위원회 대한감염학회 2009 감염과 화학요법 Vol.41 No.3

A successful therapy of community-acquired pneumonia requires appropriate empirical antimicrobial therapy. Etiology and antimicrobial susceptibility of major pathogens of pneumonia can differ by country. Therefore, an ideal treatment guideline of community-acquired pneumonia should be based on the studies performed in each country. We developed a treatment guideline for community-acquired pneumonia in immunocompetent adults in Korea. This guideline was developed by the joint committee of the Korean Society for Chemotherapy, the Korean Society of Infectious Diseases, and the Korean Academy of Tuberculosis and Respiratory diseases.

고등학교 지구과학 실험·실습 요목 비교 분석

정원우,이윤종,기우항,김영호,양승영,강용희,안병호,임성규,윤일희,김중욱,윤성효,강동진 경북대학교 과학교육연구소 1997 科學敎育硏究誌 Vol.21 No.-

The purpose of this study is to investigate the status of the experimental and practical education in high school earth. The present status and reasonable management of the experimental and practical education in high school earth science have been grasped from the questionaires. To do this, eighty eight earth science teachers in Korea are administered questionaires. The frequency of the experimental and practical items in the seven kind of earth science text books were investigated. The problems and the reasonable management for experimental and practical education were proposed in this paper.