Nonporous Hydroxyapatite를 이용한 전두골 함몰개선의 치험례

양인석,김영균,이철우,유시봉,박정열,Yang, In-Seok,Kim, Young-Kyun,Lee, Chul-Woo,Yoo, Si-Bong,Park, Cheung-Yeoul 대한악안면성형재건외과학회 1992 Maxillofacial Plastic Reconstructive Surgery Vol.14 No.3

This is a case report of correction of traumatic right frontal bone depression. Traditionally, autogenous and homogenous corticocancellous bone have been inlaid or onlaid. This patient who had frontal bone depression of right forehead was operated with an extracranial augmentation procedure using Hydroxyapatite materials. The postoperative course was unremarkble and the patient was satisfied with a good facial contour. Now We will report the results.

시론-과학기술교육 이대로 좋은가

양인석,Yang, In-Seok 한국과학기술단체총연합회 1987 과학과 기술 Vol.20 No.11

종설(綜說) : 불임(不姙)에 관한 실험연구 동향 분석 -한의학계에서 발표된 학위논문을 중심으로-

양인석 ( In Seok Yang ),임채광 ( Chae Kwang Im ) 대구한의대학교 제한동의학술원 2012 東西醫學 Vol.37 No.4

To develop, standardize and objectify the effective infertility treatments in Oriental Medicine, the tendency of experiments and studies on the infertility was analyzed through the published dissertations in Oriental Medicine field to get the following conclusions: In the annual publishing tendency, the number of dissertations began to increase from 2002 and the dissertations were published every year except 2005. In the publishing situation of institutions, Kyunghee University had published most papers: 11 master dissertations and 13 doctorate dissertations. In the infertility types, 25 dissertations were on the male infertility and 8 were on the female infertility. Before 2003, most of the dissertations were on the female infertility and since 2003 the dissertation on the male infertility have been published more actively. In the medication and the prescription, the studies with single medication were 25, and ones with single prescription were 8 In the studies on the male infertility with single medication, four papers on Ginseng Radix(人蔘) were the most. In the studies on the female infertility, there was one paper each on Cervi Pantotrichum cornu(鹿茸), Foeniculi fructus(小茴香), Evodiae fructus(吳茱萸) and Hominis placenta(紫河車). And in the papers experimented with the prescription, there was a male infertility dissertation each on the Ugui-eum(yougui-yin) and the Palmijihwang-hwan(baweidihuang-wan〕); in case of female infertility, there were 2 dissertations prescribing the Ontoyuknin-tang(wentuyulin-tang) and one each prescribing the Gamiguibi-tang(jiaweiguipi-tang), the Buikjihwang-hwan(fuyidihuang-wan), Sibjeonjeeum-hwan(shiquanjiyin-wan), the Onpo-eum(wenbao-yin), the Yukmijihwang-tang(liuweidihuang-tang), the Changbudodam-hwan(cangfudaotan-wan) and Palmulgunja-tang gamibang(bawujunzi-tang jiaweifang). If there are more diverse studies on medication, prescription, acupuncture/moxibustion and external treatment methods in the future, this will be very helpful for the clinical treatment of infertility.

두부손상을 동반한 악안면외상에 대한 임상적 연구

양인석(ln Seok Yang),여환호(Hwan Ho Yeo),김영균(Yong Gyun Kim),이철우(Chul Woo Lee),박인순(In Sun Park) 대한구강악안면외과학회 1994 대한구강악안면외과학회지 Vol.20 No.2

This is a retrospective study on 53 facial bone fracture patients with head injuries treated in Chosun university hospital, Department of Oral & Maxillofacial Surgery and Neurosurgery from Jan. 1991 to Dec. 1992, and the obtained results were as follows. 1. Of the 355 patients with facial bone fractures, 63 patients suffered from head injures(17.7%) and male to female ration was 5.7:1. 2. The most frequently affected was midface area(71%) including zygoma(32%), nasal bone(21%), and maxilla(19%). 3. The age frequency was the highest in the third decade(40%). 4. In the zygomatic fracture, the most frequent site was zygomatic arch area(47%), It was Lefort II type fracture(53%) in the maxilla and symphyseal & body area(66%) in the mandible. 5. The most frequent cause was traffic accidents(66%). 6. The most frequently traumatic sign was closed head injury(46%) involving cerebral contusion, subdural hematoma. Intracerebral hemorrage. 7. The most frequently associated injuries were facial laceration(43%), and other associated injuries included spine injury(17%), whole body contusion(16%), chest injury(13%), extremities injury(9%), abdomen injury(2%). 8. Of 25 patients below drowsy mentation, the mean Glassgow Coma Scale score was 10.8. 9. In the classification of clinical mental state by De Jong, alert state was 31 cases, drowsy state 12 cases, semicoma 7 cases, coma 3 cases. 10. GCS score was low in the patients of craniocerebral injury concomittant with combined midfacial bone fracture. 11. The open reduction to the facial bone fractures was performed in about 8 days after the injury in the 13 of total 25 cases(52%) due to neurosurgical problems. 12. The complications were maloccusion(2 cases), malunion(1 case), nonunion(1 case) and deep space infection(1 case), and the complication rate was 19.2%.

2급 와동 수복 시 한국 치과 지사들의 복합레진 사용 실태 연구

신동호,박세은,양인석,장주혜,이인복,조병훈,손호현,Shin, Dong-Ho,Park, Se-Eun,Yang, In-Seok,Chang, Ju-Hea,Lee, In-Bog,Cho, Byeong-Hoon,Son, Ho-Hyun 대한치과보존학회 2009 Restorative Dentistry & Endodontics Vol.34 No.2

본 연구는 2008년 1월 현재 한국 치과의사들의 복합레진 사용 실태에 관한 설문 조사로서, 2급 와동을 수복하는 증례에서 치과의사의 면허 년도, 교육 배경 및 진료환경 등에 따라 수복재료의 선택, 복합레진의 사용여부 및 사용방법, 문제점 등을 비교하였다. 한국 치과의사들을 대상으로 2급 와동 수복에 관한 17 문항의 설문지를 제작하였다. 이 설문지는 시술자 정보, 2급 와동의 수복으로 크게 2부분으로 나누어진다. 이 설문지는 대한치과의사협회를 통해 12,193명의 치과의사들에게 E-메일로 발송되었다. 이 중 2,612개의 메일이 수신 확인되었고 840 개의 설문지가 작성되어 회신되었다 수신 확인된 메일 수에 대한 회신된 메일 수의 비율 (회신율)은 32.2%이었고, 이 자료는 SPSS 프로그램에서 카이제곱 분석을 이용하여 교차 분석하였다. 답변자의 비율은 면허년도를 기준으로 $1998{\sim}2007$년에 면허를 취득한 그룹 (한국 전체 치과의사의 33.3%, 추정년령 26-35세)이 60.3%로 1997년 이전에 면허 취득한 그룹 (한국 전체 치과의사의 66.7%, 추정 년령 36세 이상)의 39.7%보다 높은 것으로 나타났다. 또한 이들이 근무하는 병원은 개인의원 (77%)이 가장 많았고, 남자 치과의사 (79%)가 많았다. 복합레진 수복에 대한 지식은 학생 때 수업이나 학회 세미나를 통하여 (83.4%) 얻은 것으로 나타났다. 2급 와동 수복 시 재료 선호도를 살펴보면 금인레이가 65.7%를 차지하고 있고 복합레진 직접 수복은 12.1%로 낮게 나타났다. 2급 와동의 복합레진 직접 수복 시 시술 방법에 있어서는 러버댐을 사용하지 않거나 잘 사용하지 않는 그룹의 비율 (74.4%)이 더 많았고, 격벽법으로는 mylar strip (53.4%)이나 metal matrix (33.8%), Palodent system (6.5%)를 사용하였다. 충전은 적층법 (99.6%)을 사용하는 것으로 나타났으며, 시술 시 인접면 형성을 가장 어려워하였다(57.2%). 2-step 접착시스템 (76%)이 3-step 접착시스템 (16%)보다 많이 사용되고 있었다. 사용하는 레진 제품으로는 Z250 (20%)이 가장 많이 사용되고 있었다. The purpose of this study was to assess the current materials, methods and difficulties according to the year of licence and educational background of Korean dentists in Class II direct composite resin restorations. Total 17 questions were included in the questionnaire. Questions were broadly divided into two parts: first. operator's information. and second. the materials and methods used in Class II posterior composite restoration. The questionnaire was sent to dentists enrolled in Korean Dental Association via e-mail. Total 12,193 e-mails were distributed to dentists. 2,612 e-mails were opened, and 840 mails (32.2%) were received from respondents. The data was statically analyzed by chi-square test using SPSS(v. 12.0.1, SPSS Inc. Chicago, IL, USA). Male dentists among respondents was 79%. 60.3% of the respondents acquired their licences recently (1998-2007), and 77% practiced in private offices. 83.4% have acquired their knowledge through school lectures, conferences and seminars. For the Class II restorations, gold inlays were preferred by 65.7% of respondents, while direct composite resin restorations were used by 12.1 % amalgam users were only 4.4% of respondents. For the restorative technique, 74.4% of respondents didn't use rubber dam as needed. For the matrix. mylar strip (53.4%), metal matrix (33.8%) and Palodent system (6.5%) were used. 99.6% of respondents restored the Class II cavity by incremental layering. Obtaining of the tight interproximal contact was considered as the most difficult procedure (57.2%) followed by field isolation (21 %). Among various bonding systems, 22.6% of respondents preferred SE Bond and 20.2% used Single Bond. Z-250 was used most frequently among a variety of composite resins.

급성 심근경색증 회복기의 관상동맥 측부순환에 대한 고찰

김준욱(Jun Wook Kim),양인석(In Seok Yang),김수경(Soo Kyung Kim),김종연(Jong Yeun Kim),이홍순(Hong Soon Lee),이학중(Hak Choong Lee) 대한내과학회 1989 대한내과학회지 Vol.36 No.2

N/A To assess coronary collaterals, angiograms were obtained from 21 patients who were recovering from acute myocardial infarction between 2 to 5 months after the disease onset. Collateral circulation was not seen in patients with coronary lesions of less than 70% obstruction. Fourteen collateral pathways were observed in 11 patients. Four collaterals (28.6%) were running from the left circumflex artery to the right coronary artery, 2 collaterals (14.2%) were from the left anterior descending artery to the right coronary artery, 1 collateral (7.2%) was between the proximal and distal right coronary artery and 3 collaterals (21.4%) were from the right coronary artery to the left anterior descending artery. One collateral (7.2%) was from the left circumflex artery to the left anterior descending artery, 2 collaterals (14.2%) were from the left anterior descending artery to the left circumflex artery and 1 collateral (7.2%) was from the right coronary artery to the left circumflex artery. Collateral circulations were observed in 8 of 13 patients with Q-wave infarction; in contrast with 3 of 8 patients with non Q-wave infarction (P=NS). The ejection fraction in the group with collaterals was 0.61±0.17, compared with 0.59±0.25 without collaterals (P=NS). In our study, the development of collateral circulation was not associated with a tendency towards protection against Q-wave infarction. The LV function was not significantly better in the group with collaterals. Thus the clinical significance of coronary collateral circulation in acute myocardial infarction should be further investigated.

수종의 근관세척액과 Listerine^(R)의 항균성 비교 연구

김영훈,강민경,최은경,양소영,양인석,강인철,황윤찬,황인남,오원만,Kim, Young-Hun,Kang, Min-Kyung,Choi, Eun-Kyoung,Yang, So-Young,Yang, In-Seok,Kang, In-Chol,Hwang, Yun-Chan,Hwang, In-Nam,Oh, Won-Mann 대한치과보존학회 2009 Restorative Dentistry & Endodontics Vol.34 No.6

본 연구는 여러 가지 근관세척액(NaOCl, CHX, EDTA)과 구강세정제로 사용되는 $Listerine^{(R)}$을 근관감염균주인 Porphyromonas gingivalis와 Enterococcus faecalis를 상대로 항균효과를 비교하고 $Listerine^{(R)}$이 근관세척액으로 사용가능한지를 확인하고자 시행하였다. 본 연구에서는 Porphyromonas gingivalis ATCC 3327과 Enterococcus faecalis ATCC 29212의 표준균주를 사용하였다. 실험을 위한 근관세척제로 0.1%, 0.2%, 1%, 2% Chlorhexidine(CHX)과 0.5%, 1%, 2.5%, 5.25% NaOCl, 0.5M EDTA(18.6% EDTA). 그리고 $Listerine^{(R)}$원액을 이용하였다. 항균효과의 비교는 액체배지상에서 균주의 혼탁도와 한천 확산법을 이용한 억제대 비교로 하였다. 모든 실험군은 대조군과 비교시 근관내 균주에 항균성을 나타냈다(p < 0.001). 모든 농도의 NaOCl, CHX, 그리고 EDTA는 실험균주에서 높은 항균성을 보였다. 모든 실험에서 $Listerine^{(R)}$은 다른 근관세척제에 비해 낮은 항균성을 보였다. 결론적으로, $Listerine^{(R)}$이 E. faecalis와 P. gingivalis에 대해 항균성을 보이나, 일반적으로 사용되는 근관세척 액에 비해서는 현저히 낮은 항균성을 나타냄으로 근관세척 액으로 사용은 적합하지 않음을 나타냈다. The purpose of this study is to compare the antibacterial effect of $Listerine^{(R)}$ on two microorganisms (P. gingivalis and E. faecalis) with various root canal irrigants (NaOCl, CHX, EDTA) and to identify possibility of using $Listerine^{(R)}$ as a root canal irrigant. Porphyromonas gingivalis ATCC 3327 and Enterococcus faecalis ATCC 29212 were used in this experiment. For the test irrigants, 0.5%, 1%, 2.5%, 5.25% NaOCl, 0.1%, 0.2%, 1%, 2% CHX, 0.5M EDTA (18.6% EDTA) and $Listerine^{(R)}$ were prepared. Distiled water was used as control. Two methods-1) Comparison of turbidity in broth and 2) Agar diffusion test-were used to determine the extent of antibacterial effect of $Listerine^{(R)}$ and to compare it with that of NaOCl, CHX, and EDTA. All solutions tested were effective against two bacterial strains compared with control (p < 0.001). Any concentration of NaOCl, CHX, and EDTA showed similarly high effectiveness against all bacterial strains. In all experiment, $Listerine^{(R)}$ showed significantly low antibacterial effect compared with the other root canal irrigants (p < 0.05). In conclusion, the results reflect remarkably low antibacterial effect of $Listerine^{(R)}$ as compared with root canal irrigants in general so it is not suitable for the root canal irrigant.

불임에 관한 국내 한의학 임상연구의 동향 분석

양인석(In Seok Yang),임채광(Chae Kwang Im),김광중(Kwang Joong Kim) 한의병리학회 2013 동의생리병리학회지 Vol.27 No.1

초정밀 온도센서의 저온 영역 교정 장치 개발

양인석 ( In Seok Yang ),송창호 ( Chang Ho Song ),강기훈 ( Kee Hoon Kang ),김용규 ( Yong Gyoo Kim ) 한국센서학회 2008 센서학회지 Vol.17 No.3

액체 질소의 흐름 조절을 통한 저온 정밀 온도 제어

양인석 ( In Seok Yang ),이지호 ( Jee Ho Lee ) 한국센서학회 2016 센서학회지 Vol.25 No.1

We devised a method to control the temperature of a liquid bath as low as -100oC using the duty cycle control of a solenoid valve. The solenoid valve controls the flow of liquid nitrogen that we used as a cryogen in this system. By controlling the duty cycle of a solenoid valve using feedback from the measured temperature of the liquid bath, we were able to achieve temperature stability within ±19 mK around -100oC. We also demonstrated that by taking average values of the temperature readings for sequence of measurements from more than one thermometer, it is possible to use this system for the calibration of thermometers within 3 mK. This system and the control method can be used for the precise temperature control in the range between 0oC and -100oC, where commercially available precision baths are much expensive and hard to be built in customized configurations.