http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
최현준(Hyun June Choi),정호균(Ho Kyun Chung) 대한구강악안면외과학회 1999 대한구강악안면외과학회지 Vol.25 No.1
This report was a 10year retrospective study on mandible fractures. The study was based on a series of 245 patients who had been treated for mandibular fractures as in-patient at Yongsan Hospital of Medical college of Chung-Ang University during the period of Jan. 1987 to Dec. 1996. The results obtained are as follows; 1. In respect of incidence, the number of fractures was increased to 1990 and then it was decreased, The ratio of Men to Women was 6 : 1. 2. The major etiologic factors were traffic accident(30.2%), fisticuffs(28.6%), falldown(25.3%), accident related to work(7.8%) and sports(6.9%). In recent years, the decreasement of fractures due to traffic accident and the increasement of fractures due to sports was impressive. 3. The age frequency was highst in the third decade(44.9%), and second(26.9%), fourth(13.9%) decade in orders. In the first decade, the cause of fractures was traffic accident and falldown only, and the fractures due to sports were concentrated on second and third decade. 4. The frequent location of mandibular fractures was symphysis(36.1%), left angle(l6.4%), right condyle(10.4%), right angle(8.6%), left condyle(8.6%), left body(5.8%), right body(5.6%), left ramus(4.0%), right ramus(3.8%). The number of average fracture site was 1.62 at each patient and the number of average fracture line was 1.91 at each patient. 5. The simple fracture was 43.7%, and the complex fracture was 56.3%, then the open fracture was 35.5%, and the closed fracture was 64.5%. 6. In respect of treatment, the frequency of open reduction was 74.3% and that of closed reduction was 25.7%, but in the condyle, closed reduction(68.0%) was the more frequently using method of treatment than open reduction(32.0%). 7. The patients were treated an average of 3.27 days after injury and the average hospitalization period was 10.07 days. 8. The mandibutar 3rd molar was existing in 60.6% of angle fractures.
하악두의 적출 및 재식시 손상받은 관절연골의 치유과정에 대한 실험적 연구
정호균(Ho kyun Chung) 대한구강악안면외과학회 1991 대한구강악안면외과학회지 Vol.17 No.4
The purpose of this experimental study is to observe the healing process of the damaged articular cartilage after removal and replantation of the mandibular condyle. In order to carry out this experiment, 18 rabbits weighing about 2.0㎏ were selected and operated as follows. Under the general anesthesia with thiopental sodium, the condylar processes were removed out from the experimental animals via horizontal osteotomy of ramus with a #700 fissure bur, and replanted to its original site after partial resection of articular cartilage with a #700 fissure bur. The experimental animals were sacrified on the day of operation, 1st week, 2nd week, 4th week, 6th week after operation, and the mandibular rami were dissected out carefully to take the bony specimens. The specimens were fixed with 10% formalin solution for 24 hours and rinsed with phosphate buffer solution. Those were decalcified with 5% nitric acid for 15 days. Thereafter the specimens were sectioned in 4-6㎛ with microtome, stained with hematoxylin-eosin stain and Koneff stain, and observed through microscopic study. The results were as follows. 1. The damaged condylar heads were healed to normal shape through endochondral bone formation macroscopically after 4 weeks of operation. 2. The proliferation of cartilage zone was began at 4th week of operation in the articular defects, and the histologic pattern was similar to the control group at 6th week of operation. 3. In the condylar fracture, the articular cartilage must be remained as possible, and the condylar remodeling was guided through continuous functional therapy.
김준식,정호균,최병덕,이기용,이준신,Kim, Jun-Sik,Chung, Ho-Kyoon,Choi, Byoung-Deog,Lee, Ki-Yong,Yi, Jun-Sin 한국전기전자재료학회 2006 전기전자재료학회논문지 Vol.19 No.4
Poly silicon TFT requires high quality dielectric film; conventional method of growing silicon dioxide needs highly hazardous chemicals such as silane. We have grown high quality dielectric film of silicon dioxide using non-hazardous chemical such as TFOS and ozone as reaction gases by APCVD. The films grown were characterized through C-V curves of MOS structures. Conventional APCVD requires high temperature processing where as in the process of current study, we developed a low temperature process. Interface trap density was substantially decreased in the silicon surface coated with the silicon dioxide film after annealing in nitrogen ambient. The interface with such low trap density could be used for poly silicon TFT fabrication with cheaper cost and potentially less hazards.
골삭제를 동반한 매복지치 발거시 Dexamethasone에 의한 술후부종 및 동통감소에 관한 임상적 연구
최덕형(Deog Hyeong Choi),정호균(Ho Kyun Chung) 대한구강악안면외과학회 1997 대한구강악안면외과학회지 Vol.23 No.3
The purpose of the present placebo-controlled double-blind study was to investigate the preventive effect of 5mg dexamethasone on swelling, trismus, and pam after removal of impacted mandibular third molars with bone reduction. The participants were consisted of 20 healthy individuals(9 male, 11 female) with bilaterally symmetrical impacted mandibular third molars. Each patient served as his own control Immediately after removal of impacted teeth, either 5mg dexamethasone or normal saline was injected intramuscularly. On the first day, 2nd day, and 7th day after operation, facial swelling, trismus, and pain were evaluated. On the first day, the difference in the volumetric change of facial swelling was 45%(p<0.05) as measured by Holland s nine pointers facebow. The trismus was reduced by 28%(p<0.01) in test froup. Pam assessed with Visualanaloguescale(VAS) was reduced by 33%(p<0.001) by dexamethasone. It can be concluded that sterokd treatment is recommended in third molar surgery when pronounced postoperative swelling, trismus, and pam are expected.
홍지원(Jin Won Hong),정호균(Ho Kyun Chung) 대한구강악안면외과학회 1993 대한구강악안면외과학회지 Vol.19 No.4
This study was conducted to give an aid in diagnois, treatment and prevention of TMD by finding out the correlation between prevalence of TMD and subjective and objective symptoms and various related factor. The subjects consisted of 110 nurses and the informations were collected from clinical examination and questionare. The results were as follows: 1. 72.7% of the sample had symptoms of temporomandibular disorders and 17.3% had subjective symptoms. 2. Symptoms of TMD were observed at higher frequency in the group with headache. 3. Limitation of mouth opening and headache were observed at higher frequency in the group with bruxism and the higher the frequency of appearence of symptoms of TMD. 4. The higher the degree of malocclusion and the tendancy of unilateral chewing, the higher the frequency of appearence of symptoms of TMD. 5. The higher the degree of pain on palpation of TMJ and masticator muscles, especially of masseter muscle, the higher the frequency of appearence of TMD symptoms. 6. TMJ noise were observed in 43.6% of all the subjects and 73.7% of the group with subjective symptoms and the frequency o bilateral joint noise was highest in the group with subjective symptoms. As observed form this data, TMJ noise seems to be an important subjective symptom of TMD.
골유착성 임프란트와 관련된 골 이식술에 대한 문헌 고찰
문세기(Se Ki Moon),정호균(Ho Kyun Chung) 대한구강악안면외과학회 2000 대한구강악안면외과학회지 Vol.26 No.5
Recent development of dental implantology has taken an interest in the bone graft procedure. This is a review of literature, published from 1994 to November 1999. This study is provided by MEDLINE search. In this study, 718 patients received 829 graft with placing 2,677 endosseous implants. In mandible, nonvascularized or vascularized block bone grafts provided better results(success rate 95.2%) than particulate grafts(83.6%). But in maxilla, particulate grafts provided better results(93.7%, 86.2%) and more cases especially in sinus elevation. There were many cases using autogenous bone graft and revealed good results, but allogenic or alloplastic bone graft materials also were used by many surgeons.
김명진(Myung Jin Kim),김경원(Kyoung Won Kim),조용석(Yong Seok Cho),정호균(Ho Kyun Chung),방영주(Yung Jue Bang),허대석(Dae Seog Heo) 대한구강악안면외과학회 1993 대한구강악안면외과학회지 Vol.19 No.4
저자들은 1985년 1월부터 1992년 12월까지 서울대학교병원에 입원하였던 두경부의 국한성 진행 편평상피세포암 환자 중 이전 치료력이 없는 28예를 대상으로 5-fluorouracil 지속주입과 Cisplatin을 이용한 선행화학요법을 시행하여 다음과 같은 결과를 얻었다. 1. 2-3주기의 복하화학요법 시행후 전체 관해율은 85.7%로, 7.1% (2예)에서 완전 관해를, 78.6% (22예)에서 부분 관해를 보였다. 2. 전체 환자의 2년 생존율은 50.0%, 생존기간의 중앙치는 16개월이었다. 3. 부작용은 오심과 구토가 전 환자에서 관찰되었으며 그외에도 백혈구감소증이 46.4%, 탈모증이 42.8%로 흔히 관찰되었지만 부작용과 연관되어 치료를 중단한 경우 1예였다. 4. 복합화학요법 후 7예에서 수술요법이, 15예에서 방사선요법이, 2예에서 수술과 방사선요법을 동시에 시행하였으며 4예에서는 더 이상의 치료를 거부하였다. 이상의 결과로 5-fluorouracil 지속주입과 cisplatin의 2제 복합화학요법은 매우 우수한 치료효과를 보이는 것으로 나타났으나 생존율 및 근치율 증가에 대해 미치는 영향에 대해서는 randomized controlled study에 의한 철저한 추시가 필요한 것으로 사료된다.