The Influence of AH-26 and Zinc Oxide-Eugenol Root Canal Sealer on the Shear Bond Strength of Composite Resin to Dentin

Cho, Ju-Yeon,Jin, Myoung-Uk,Kim, Young-Kyung,Kim, Sung Kyo 大韓齒科保存學會 2006 Restorative Dentistry & Endodontics Vol.31 No.3

AH-26 근관실러가 상아질에 대한 복합레진의 전단결합강도에 미치는 영향을 평가하기 위하여 144개의 발거된 대구치를 실린더형의 몰드에 매식한 다음 치관부의 상아질 표면을 노출시킨 후 편평하게 연마하고 AH-26을 도포한 군, ZOE paste를 도포한 군 및 실러를 도포하지 않은 대조군으로 나누어 One-step 상아질 접착제를 처리한 후에 Charisma (Heraeus Kulzer, Germany) 복합레진을 적용하고 광중합시켰다. 시편을 분리하여 37℃ 항온조에 24시간 보관후 Instron test machine (Model 4202, Instron Corp., USA)을 이용하여 시편의 전단 결합 강도를 측정하고 one-way ANOVA 및 Tukey's studentized rank test로 통계 분석하였다. AH-26 근관실러로 처리한 군과 대조군은 ZOE 근관실러 처리군에 비해 유의하게 놓은 접착강도를 나타내었다 (p<0.05). AH-26 근관실러 처리군과 아무 처리하지 않은 대조군 사이에는 결합강도에 있어 유의한 차이를 나타내지 않았다 (p>0.05). 본 연구의 조건에서는 ZOE 근관실러는 상아질에 대한 복합레진의 전단결합강도를 저하시키는 반면 AH-26 근관실러는 유의한 영향을 미치지는 않는 것으로 보인다. 따라서 임상에서 근관실러로 AH-26을 사용한 근관충전 후에는 즉시 복합레진 코어를 해 주어도 결합력에 저해가 없을 것으로 여겨진다. The purpose of this study was to evaluate the influence of the AH-26 root canal sealer on the shear bond strength of composite resin to dentin. One hundred and forty four (144) extracted, sound human molars were used. After embedding in a cylindrical mold, the occlusal part of the anatomical crown was cut away and trimmed in order to create a flat dentin surface. The teeth were randomly divided into three groups; the AH-26 sealer was applied to the AH-26 group, and zinc-oxide eugenol (ZOE) paste was applied to the ZOE group. The dentin surface of the control group did not receive any sealer. A mount jig was placed against the surface of the teeth and the One-step dentin bonding agent was applied after acid etching. Charisma composite resin was packed into the mold and light cured. After polymerization, the alignment tube and mold were removed and the specimens were placed in distilled water at 37℃ for twenty four hours. The shear bond strength was measured by an Instron testing machine. The data for each group were subjected to one-way ANOVA and Tukey's studentized rank test so as to make comparisons between the groups. The AH-26 group and the control group showed significantly higher shear bond strength than the ZOE group (p<0.05). There were no significant differences between the AH-26 group and the control one (p>0.05). Under the conditions of this study, the AH-26 root canal sealer did not seem to affect the shear bond strength of the composite resin to dentin while the ZOE sealer did. Therefore, there may be no decrease in bond strength when the composite resin core is built up immediately after a canal filling with AH-26 as a root canal sealer.

정신분열병에 대한 리스페리돈의 효과 및 안정성

이민수,김용구,김영훈,연병길,오병훈,윤도준,윤진상,이철,정희연,강병조,김광수,김동언,김명정,김상훈,김희철,나철,노승호,민경준,박기창,박두병,백기청,백인호,손봉기,손진욱,양병환,양창국,우행원,이정호,이종범,이홍식,임기영,전태연,정영조,정영철,정인과,정인원,지익성,채정호,한상익,한선호,한진희,서광윤 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.1

연구목적 : 본 시험의 목적은 임상시험 시작전에 연구자들을 대상으로 PANSS Workshop을 통하여 PANSS, ESRS에 대한 국내에서의 표준화 작업을 구축하고 새로운 정신병 치료제인 리스페리돈의 효과와 안정성을 재확인하여 리스페리돈 사용에 대한 적정화를 이루는데 있다. 연구방법 : 1996년 4월부터 1996년 9월까지 국내 39개 대학병원 정신과에 입원중인 혹은 증상이 악화되어 입원하는 정신분열병 환자 377명을 대상으로 다시설 개방 연구를 시행하였다. 1주일간의 약물 배설기간을 가진후, 리스페리돈을 8주간 투여하였고, 기준점, 1주, 2주, 4주, 그리고 8주후에 평가되었다. 용량은 제1일에는 리스페리돈 1mg씩 1일 2회, 제2일에는 2mg씩 1일 2회, 제3∼7일에는 3mg씩 1일 2회 투여하였다. 이후 환자의 임상상태에 따라 임의로 증량할 수 있으며, 최대 일일 16mg을 초과하지 않도록 하였다. 추체외로 증상을 조절하기 위한 투약을 허용하였다. 임상증상 및 부작용의 평가는 PANSS(Positive and Negative Syndrome Scale), CGI(Clinical Global Impression) 그리고 ESRS(Extrapyramidal Symptom Rating Scale)을 사용하였다. 연구결과 : 377명중 343명(91%)이 8주간의 연구를 완결하였다. 치료 종결시점인 8주후 PANSS 총점수가 20% 이상 호전된 경우를 약물 반응군으로 정의할때, 약물반응군은 81.3%였다. 리스페리돈에 반응하는 예측인자로는 발병연령, 이전의 입원 횟수, 유병기간이 관련 있었다. 리스페리돈은 1주후부터 PANSS양성, 음성, 및 일반정신병리 점수상에 유의한 호전을 보여 효과가 빨랐다. CGI의 경우도 기준점에 비해 1주후부터 유의한 감소를 나타내었다. ESRS의 경우, 파킨슨 평가점수는 기준점과 비교해 투여 1주, 2주, 4주후 유의하게 증가되었다가 8주후 기준점과 차이가 없었다. Dystonia 평가점수는 1주후만 유의한 증가를 보였으며, dyskinesia 평가점수는 유의한 차이가 없었다. 혈압, 맥박수의 생명징후 및 일반 혈액학 검사, 생화학적 검사, 심전도 검사에서 유의한 변화는 없었다. 결 론 : 이상의 다시설 개방 임상 연구를 통해 리스페리돈은 정신분열병 환자에서 양성증상뿐만 아니라 음성증상 및 전반적인 증상에도 효과적인 것으로 사료된다. 보다 명확한 평가를 위해서는 다른 항정신병약물과의 이중맹검 연구가 필요할 것으로 생각되며, 또한 장기적 치료에 대한 평가도 함께 이루어져야 하겠다. Objective : The purpose of this study was to investigate the efficacy and safety of risperidone in the treatment of Korean schizophrenic patients. Method : This multicenter open study included 377 schizophrenic patients drawn from 39 university hospitals. After a wash-out period of 1 week, the schizophrenic patients were treated with risperidone for 8 weeks and evaluated at 5 points ; at baseline, and 1, 2, 4 and 8 weeks of treatment. The dose was increased from 2mg/day(1mg twice daily) to 6mg/day(3mg twice daily) during the first week and adjusted to a maximum of 16mg/day over the next 7 weeks according to the patient's clinical response. Medication to control extrapyramidal symptoms was permitted. The psychiatric and neurological status of the patients was assessed by PANSS, CGI, and ESRS scales. Results : 343(91%) of 377 patients completed the 8-week trial period. Clinical improvement, as defined by a 20% or more reduction in total PANSS score at end point, was shown by 81.3% of patients. The predictors of response to risperidone were associated older age, shorter duration of illness, fewer previous hospitalization. Risperidone had rapid onset of action ; a significant decrease of the total PANSS and three PANSS factor(positive, negative, general), and CGI was already noticed at the end of first week. For the ESRS, parkinsonism rating scores were significantly increased until week 4 comparing with baseline. Dystonia rating scores were significantly increased until week 1, and dyskinesia rating scores were not significantly changed during the study. Laboratory parameters including vital sign, EKG, hematological, and biochemical values showed no significant changes during the trial. Conclusions : This study suggests that risperidone is generally safe and effective against both the positive and negative symptoms in our group of patients.

"省谷의 精神이 雙龍그룹 및 體育部門에 미친 影響에 관한 硏究" : 金 成坤의 體育活動을 中心으로

趙衍澈,裵守鎭 啓明大學校 生活科學硏究所 1990 科學論集 Vol.16 No.-

The process of economic development of a nation in the process of economic growth of its enterprises. Therefore, the outcomes of enterprise management determine the future of the nation. A small enterprise directed by Song-Kok has become the great Ssang Young Group, thanks to his excellent management through generous personality, aggressive attitude and persistent efforts. In other words, whatever he did, Song-Kok tried his best as an entrepreneur, politician, newsman, and athlete. His staying energy came from his physical health which he has been taking care of by means of continuous exercise. Song-Kok was very interested in the development of Korean athletics and achieved many things as follows. 1. While he was president of the Kyungbuk Athletic Association, Song-Kok restored athletics in kyungbuk province. 2. When he was president of the Korea Judo Association, Song-Kok made a great contribution to the progress of Korean Judo. 3. Song-Kok did a great deal for the development of Korean athletics while he was an adviser to the Korea Amateur Sports Association. 4. Song-Kok was very contributive to the evolution of golf while he was president of the Asia Golf Association.

急性 骨髓性 白血病 患者 1例에 對한 臨床報告

조정효,유화승,최우진,이용연,서상훈,이연월,손창규,조종관 대전대학교 한방병원 2000 惠和醫學 Vol.9 No.2

AML is the most common type of leukemia in adults. AML(acute myeloid leukaemia) is characterised by a rapid accumulation of abnormal white blood cells in the blood and bone marrow, resulting in severe anemia, and possibly infection, and hemorrhage during the course of the disease. In general the prognosis of patient with relapsed AML is poor. At this time, however, the only potentially curative therapy for relapsed patients is allogeneic BMT(bone marrow transplantation). This clinical study were carried out 1 case of female patient aged 44 with relapsed AML treated by herb medicine. At the time of admission, she complained of mild fever, nausea, vomitting, abdominal pain, anorexia and no sign of bleeding. For the 10 days of admission, she was treated with Oriental-Western medicine and all the symptoms were disappeared. After that, the syptoms were aggravated because of secondary infection. Anyway, above result showed the possibility of Oriental therapy as Supportive Care in AML.

고등어 및 정어리 선어의 휘발성성분

조우진,김훈,정연정,이영미,정은정,차용준 창원대학교 생활과학연구소 2002 생활과학연구 Vol.- No.6

This study was conducted to identify volatile compounds, associating with quality deterioration, which may play roles as indicators for quality assessment in fresh mackerel and sardine. Volatile compounds were analyzed by liquid liquid continuous extraction(LLCE)/GC/MSD methods. A total of 83 and 81 volatile compounds were detected in fresh mackerel and sardine, respectively, and these compounds were mainly composed of aldehydes(12 in raw mackerel, 11 in raw sardine), ketones(7, 4), alcohols(15, 14), esters(1, 3), aromatic compounds(13, 15), terpenes(5, 7), S-containing compounds(2, 2), hydrocarbons(13, 11) and miscellaneous compounds(2, 1). Most of compounds including carbonyls, alcohols, aromatic compounds and hydrocarbons were derived from lipid oxidation, and some compounds were detected from microbial degradation. It was supposed that LLCE method was proper to seek indicators for quality assessment in fresh mackerel and sardine, because of various volatile compounds derived from nonthermal lipid oxidation.

3차원 전산화 단층촬영의 Nasion, Sella, Basion으로 구성된 정중 시상 평면과 정면 두부방사선 규격사진의 정중 시상 평면 비교

조진형,문지연 대한치과교정학회 2010 대한치과교정학회지 Vol.40 No.1

안면 비대칭의 평가에 있어 과거 정면 두부방사선 규격사진을 이용하던 것과는 다르게 현재는 점차 3D CT를 이용하여 평가하는 것으로 변하고 있다. 본 연구는 3D CT와의 비교를 이용하여 정면 두부방사선 규격사진 분석에서 쉽게 접근할 수 있는 시상 기준 평면을 찾고자 하였다. 임상적으로 안모 비대칭이 발견되지 않은 성인 환자들을 대상으로 3D CT와 정면 두부방사선 규격사진을 촬영하였고, 정면 두부방사선 규격사진 분석에서 이용되어 왔던 5가지 정중 시상 기준 평면을 선택하여 계측을 실시한 뒤 이 값을 3D CT의 Nasion (Na), Sella (S), Basion (Ba)으로 구성된 정중 시상 평면에 대한 계측값과 비교하였다. 그 결과 좌우측 latero-orbitale의 수직이등분선을 정중 시상 기준 평면으로 이용한 정면 두부방사선 규격사진 계측값이 3D CT의 Na, S, Ba으로 구성된 정중 시상 평면을 이용한 계측값과 가장 차이가 작았고 상관관계가 높은 것으로 나타났다. 안면 비대칭 평가 시 좌우측 latero-orbitale의 수직이등분선이 정면 두부방사선 규격사진 분석에서 도움이 되는 정중 시상 기준 평면으로 이용될 수 있을 것이다. Objective: The aim of this study is to find the most helpful midsagittal reference plane for diagnosis in PA cephalometry compared with 3D CT. Methods: The subjects consisted of 25 adults who showed no facial asymmetry by gross inspection. 3D CT and posteroanterior cephalogram of the subjects were taken. To find the most helpful midsagittal reference plane in PA cephalometry, we considered five kinds of midsagittal planes from which the distances to five landmarks were measured and compared the result with that of 3D CT. The midsagittal plane for 3D CT was determined by the landmarks Nasion, Sella and Basion. Results: PA measurements using the midsagittal reference plane on a perpendicular plane lying through the midpoint of the right and left latero-orbitales was closest to those of 3D CT. Conclusions: It was considered that latero-orbitale perpendicular could be used as the helpful midsagittal reference plane to assess facial asymmetry in PA cephalometry.

小兒期 精神分裂症 : 思春期 以前 發病群과 思春期 以後 發病群의 臨床的 比較 硏究 A Comparison between the Two Groups with the onset prior to Puberty and after Puber

崔珍淑,鄭嬉然,崔貞美,曺洙哲,洪剛義 서울醫大 1991 精神醫學 Vol.16 No.4

전기분해에 의한 염색폐수의 탈색에 관한 연구

이진휘,이진희,연만형,조성국 서울産業大學校 1997 논문집 Vol.46 No.1

전기분해에 의한 염색폐수의 탈색효과를 규명하기 위하여 Fe, Al 및 Cu극판을 단일 또는 혼용하여 적색, 황색 및 청색산성염료 200ppm에 대하여 탈색실험을 수행한 결과 Fe(+)와 Al(-)전극을 혼용하고, 극간거리가 1.5㎝일 때 가장 제거율이 좋았다. 염색폐수의 농도 50∼250ppm에 대하여 전해질로써 NaCl을 0.1∼0.5% 사용하고 전류밀도 0.033∼0.166A/㎠로 실험한 결과 6분이상의 시간 경과후 95%이상 색도가 제거되었고, 전해질의 농도가 높을수록 소비전력은 높아지고 제거율은 향상되었으나 시간이 지남에 따라서 전력소비는 거의 일정하였다. This experiment is performed to investigate the decoloration of dye wastewater by using the same or different electrodes of Fe, Al and Cu. The waste solution consists of a single colored acidic dye of red, yellow or blue with a concentration of 200ppm. The results showed that the combination of Fe(+) and Al(-) electrodes and a distanced of 1.5㎝s between the electrodes was best for the decoloration process. It showed more than 95% decoloration occurred after 6 min. when we used NaCl solution of 0.1∼0.5% for electrolysis and current densities of 0.033∼0.166A/㎠ with solutions of 50∼250ppm. The higher the concentration of electrolyte, the higher the consumption of power becomes constant after a period of time.

골반염증성 질환과 질염을 가진 환자의 진단과 추적관찰에서 Chlamydia trachomatis의 검출을 위한 이중 중합효소 연쇄반응의 적용

이진우,조현철,최규연,배동한,김휘준 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.2

Objectives : PCR has generally been more sensitive than the conventional microbiological test for the detection of C.trachomatis which has been a leading cause of sexually transmitted disease. The purpose of this study was to evaluate the prevalence of C.trachomatis infection in the patients with pelvic imflammatory disease(PID) and the usefulness of nested PCR as a follow-up test in patiens with C. trachomatis infection after administration of antibiotics. Methods: Cervical swab specimens were obtained from 187 patients with PID and vaginitis attending the Soonchunhyang Chunan Hospital. From the C. trachomatis positive patients, cervical swab specimens were obtained once a week after treatment until PCR tested negative. We performed the nested PCR with Chlamydia-CR kit(Bioneer, Korea.) Results: From 6(5.8%) of 187 cervical swab specimen, C. Trachomatis was detected by nested PCR. These patients were treated with doxycycline and metronidazole for 7 to 14 days. All of 6 C. trachomatis positive patients revealed PCR-negative immediately after the completion of antibiotics treatment. Conclusions: With the above results, the nested PCR is a relatively simple, fast, and practical tool for the detection of C. trachmatis and may be a useful follow-up test for monitoring the treatment effect.

고도보정 공간내삽에 의한 전국의 1km²단위 기상실황 추정

윤진일,이동석,최재연,조성인,박은우,황헌 한국농업정보과학회 1999 농업정보과학 Vol.1 No.1

Conventional method of generating meteorological surfaces over geographic areas often neglects the elevation effect which is considered to be a single most important control over local climate. Deviation of the estimates may exrled practical limits at some areas with complex toprlgraphy. A digital map featuring coordinates and elevation data of 72 weather stations in Korea were joined with hourly weather(trmperature, relative humidity, precipitation and wind speed) observations at the stations by using a geographic information system software. An inverse distanre weighted interpolation was done on the point features to generate prim-itive meteorological and elevation surface grids consisting of 430×600 cells, respectively. Elevation difference at each cell between the United States Geological Survey's 1 km digital elevation model and this virtual ele-vation surface was calculated. Known relationships between meteorological elements and the elevation differ-ence were used to derive "correction grids" representing the potential effects of elevation difference at each grid cell. The correction grids were added or multiplied to the primitive meteorological surfaces to obtain ele-vation-corrected estimates for corresponding elements. This srheme was applied to hourly data of 27 March 1998 to generate the elevation-corrected mrteorological surfaces. Observed data of 350 automated weather sta-tions were used to partially validate the accuracy of the results. This simple scheme sHelved a feasibility of a near-real time generation of hourly meteorological surfaces for temperature and rainfall with an affordable error range.