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임상원저 : 상악골 전벽골 결손에 대한 재건술에 있어서 동결건조 콜라겐 매식과 소강판고정술의 임상적 유용성
오승환(Sung Hwan Oh),장관식(Kwan Sik Chang),조병호(Byung Ho Jo),민승기(Sung Ki Min),이동근(Dong Kun Lee),김수남(Su Nam Kim) 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.6
Maxilla is located in midfacial area and has intimate relationship with adjacent anatomical structure such as nasal cavity, orbit, oral cavity, and zygoma. Skeletal defects of maxillary antral wall may be developed by various postoperative causes for comminuted maxillary fractures, tumors of head and neck area or cystic lesions of maxillary sinuses. If these bony defects are left untreated state, this results in several postoperative complications such as soft tissue impingement into bony defects or dysfunction of sinus mucosa. Hence, these defects should be pertinently treated as possible. The main purpose of such surgery is to preservation of normal physiologic function of maxillary sinus. In the past, a variety of materials have been used to reconstruct defects of the maxillary antral wall. Alloplastic materials are popular today because of availability without an additional operation and their ease of use. With favorable results and review of related literatures, we report the availability of lyophilized collagen implantation and microplate fixation as the reconstructive surgical methods on the defects of maxillary anterior wall resulted from various reasons.
임상원저 : 편측 하악 과두골절의 관혈적 치료에 있어서 예후에 영향을 줄 수 있는 인자들에 관한 임상 통계학적 연구
이동근(Dong Kuen Lee),오승환(Seung Hwan Oh),성헌모(Hun Mo Sung),장관식(Kwan Sik Chang),민승기(Seung Ki Min) 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.1
The purpose of this study is to reveal the factors leading to the problem of unilateral condylar fractures and suggest a treatment guideline of treatment for good prognosis in surgical treatment. The factors can be age, sex, fracture site, degree of displacement, posterior occlusion loss, post-operative alteration of condylar head position, post-operative condylar head resorption, and maxillomandibular fixation period. One hundred and eleven patients with unilateral condylar fractures, who were treated by surgical method from 1990 Feb. to 2000 Feb., were studied. Minimum follow-up period was 6 months. The results were as follows; 1. In the age group of 41 60,females had significantly higher complication rate than males, therefore we must be careful about treatment of female in this age group 2. In level Ⅰfractures of the mandibular condyle, because there were abundant complications when the patients were treated with fragment removal, conservative treatment is recommended over the surgical approach. 3. There were no differences in the complication rate, in the level Ⅱ, Ⅲ fractures. but were severe complications in the cases of patients treated by Dr. Nam's method or fragment removal. Therefore, open reduction and internal fixation is recommended over Dr. Nam's method or fragment removal. 4. In level Ⅳfractures, open reduction and internal fixation is recommended 5. Although there was a higher complication rate depending on the degree of deviation, there was no correlation between the degree of deviation and development of complications in each level of fracture 6. Because the complication rate was higher in cases of condylar resorption, vertical dimension loss, and alteration of condylar head position, we must make an effort to prevent such complications during treatment.
오세영(Oh, Se-Young),황성규(Hwang, Seong-Kwy),윤철훈(Yoon, Cheol-Hun),이기창(Lee, Ki-Chang),장관식(Jang, Kwan-Sik) 한국유화학회 1998 한국응용과학기술학회지 Vol.15 No.3
This study was carried out to investigate characteristics and Pb(II) removal effect of natural Muan, Seosan, Kangjin clays in the batch mode test to develope the low-priced treatment agent of wastewater which contain heavy metals in order structural, optical properties and chemical compositions of natural clays from domestic have been investigated to have high specific surface area and have minerals such as $SiO_2$ 수식 이미지 and $Al_2O_3$ 수식 이미지. As a result, removal effects of Pb(II) ions on clays were reached at equilibrium in aqueous solutions by stirring about 20minutes. The removal effect of Pb(II) ions was best for Seosan clay than Muan or Kangjin clays in terms of fixed time. The results show the possibility of continuous treatment system of wastewater which contain heavy metals by using natural clays from domestic.
상악골 전벽골 겸손에 대한 재건술에 있어서 동결건조 콜라겐 매식과 소강판고정술의 임상적 유용성
오승환,장관식,조병호,민승기,이동근,김수남 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.6
Maxilla is located in midfacial area and has intimate relationship with adjacent anatomical structure such as nasal cavity, orbit, oral cavity, and zygoma. Skeletal defects of maxillary antral wall may be developed by various postoperative causes for comminuted maxillary fractures, tumors of head and neck area or cystic lesions of maxillary sinuses. If these bony defects are left untreated state, this results in several postoperative complications such as soft tissue impingement into bony defects or dysfunction of sinus mucosa. Hence, these defects should be pertinently treated as possible. The main purpose of such surgery is to preservation of normal physiologic function of maxillary sinus. In the past, a variety of materials have been used to reconstruct defects of the maxillary antral wall. Alloplastic materials are popular today because of availability without an additional operation and their ease of use. With favorable results and review of related literatures, we report the availability of lyophilized collagen implantation and microplate fixation as the reconstructive surgical methods on the defects of maxillary anterior wall resulted from various reasons.
하악 시상골 절단술 후 고정 방법에 따른 회귀 성향에 대한 비교 연구
배진오,이동근,오승환,신기영,장관식 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.2
Objective : To compare two different methods of rigid fixation in postoperative stability after mandibular setback, Material and Methods : 28 patients with Class III malocclusion were treated by bilateral sagittal split ramus osteotomy(BSSRO) and mandibular setback were selected for this study. Group A(n=14) had the bone segments fixed with monocortical miniplate on the lateral side of the mandibular body and Group B(n=14) had three noncompressive bicortical screw inserted at the genial area through a transcutaneous approach. Cephalograms were taken preoperatively, postoperatively within 1 weeks and at a follow-up period (mean 8.9 months after surgery) and the amount of setback and postoperative change were measured. Results : Postoperative relapse between two groups was minimal in setback of the mandible. Statistical analysis showed no significant difference in postoperative relapse. Conclusion : This study suggests that both methods of skeletal fixation investigated give comparable postoperative stability and their use in mandibular setback appears to be a fairly stable clinical procedure.
각종 급 만성 간질환에 있어서 IgM anti-HBc 의 양성률 및 의의
이동윤,임성순,문형일,오용식,장관식 대한내과학회 1986 대한내과학회지 Vol.31 No.3
In 158 patients with acute and chronic liver diseases, who were hospitalized or had visited the out-patient clinic from Jan. 1984 to May 1986, 1986, we studied the prevalence of serum positive IgM anti-HBc by radioimmunoassay(RIA). We found the results useful for diagnosis of HBsAg negative acute viral hepatitis type B and for differential diagnosis among acute and chronic liver diseases. 1) IgM anti-HBc was positive in 89% of 36 patients with acute viral hepatitis type R. 2) Among 51 patients with acute viral hepatitis 36 had B type hepatitis. The remaining 15 patient were all negative for IgM anti-HBc: two cases had acute viral hepatitis type A, 5 cases had non A non R hepatitis and 8 cases had acute drug related toxic hepatitis. 3) Among the various chronic liver diseases patients, the prevalence rate of lgM anti-HBc in serum was highest in chronic active hepatitis patients, 38%. 4) The prevalence of positive IgM anti-HBc in chronic active hepatitis was more significant in HBsAg(+) HBeAg(+) patients(40%) than HBsAg ( - ) patients(17%).