Mineral Trioxide Aggregate(MTA)의 치근단 역충전효과에 대한 임상적 연구

홍찬의,홍한표,조용범 단국대학교 치의학연구소 1994 논문집 Vol.6 No.1

Although numerous materials have been recommended as root end filling material, so far no material has been found to satisfy all of the requirements of an ideal material. An experimental material, mineral trioxide aggregate(MTA), has been recently developed to seal off all pathways of communication between the root canal system and the external surface of the tooth. This material has been used to seal the root end cavities in extracted teeth and similar preparations in beagle dogs and shown very promising results. In this clinical study, 5 anterior teeth from three patients were used to clinically and radiographically evaluate the efficacy of MTA as a root end filling material on a short-term basis. After removing the apical 2 to 3 ㎜ of the roots, The root end cavities were prepared and filled with MTA. The results were as follows: 1. All the cases demonstrated excellent healing radiographically and absence of clinical signs and symptoms. 2. According to the results, it appeared that MTA had a good sealing ability and biocompatibility. 3. MTA showed very promising results as a root end filling material, but Long-term clinical retrospective studies of many cases are recommended to get the most valid evaluations.

Mineral Trioxide Aggregate(MTA)의 치근단 역충전효과에 대한 임상적 연구

홍찬의,홍한표,조용범 단국대학교 치의학연구소 1994 단국대치의학연구소논문집 Vol.6 No.1

치근단절제술 후 Cold-burnished Gutta-percha가 치유에 미치는 임상적 연구

홍한표,조용범,홍찬의 단국대학교 치의학연구소 1994 단국대치의학연구소논문집 Vol.6 No.1

씨름 지도자의 행동유형과 선수만족과의 관계

홍장표,이재학,방한효 龍仁大學校 武道硏究所 2002 武道硏究所誌 Vol.13 No.1

The purpose of this study was to consider the features of teaching behavior and each teaching behavior was compared and analysed with group cohesion in Korea Ssireum. The researcher worked with 30 high school teams, 15 college teams, 12 ordinary teams and 4 falk teams belonging to Korea Ssireum Association and the Korea Ssireum Federation from February, 2002. The researcher made a radome choice of 10 players each team and worked with a total of 570 players with questionnaries. The researcher conducted a frequency analysis, a correlation analysis and regression analysis with SPSS 10.0 and the significant level of all the hypothesis tests stands at a=.05. The conclusions of this study were as follows: First, there was a high correlation for the all subordinate variables in teaching behavior of leaders. The survey showed that there was a positive influence at a level of 1 percent. And there was no correlation between authority behavior and group cohesion with a negative influence at a level of 1 percent. Second, there were influences both training behavior and compensation behavior for player relationship, life satisfaction of player was affected in training behavior and democratic behavior with a positive influence at a level of 5 percent. And life frustration of player was affected in training behavior, social support behavior and compensation behavior, specially training behavior and compensation behavior were affected with a positive influence at a level of 5 percent.

불량매립지 보수를 위한 분류체계모형 개발

홍상표,구성회,우세홍,김을환,최한영 서울보건대학 1997 서울보건대학 부설 한국보건과학연구소 논문집 Vol.4 No.1

LHR(Landfill Site Hazard Ranking Model)was developed for assessing the relative hazard of landfill sites by using the method of value-structured approach. LHR consists of combining a multiattribute decision-making method with a qualitative risk assessment approach. AHP(Analytic Hierarchy Process)based on the pairwise comparison method was applied to determine weights of landfill site factors related. To determine the relative hazard of landfill sites evaluated, hydrogeological factors, waste characteristics factors and recptors factors were evaluated by LHR. LHR can help decision-makers prioritization of remediation of landfill sites through the relatively convenient and concise evaluation metl10d of landfill site features related. LHR focuses mainly on pathways of groundwater and surfacewater for evaluating landfill hazard to receptors including humans. To validiate the applicability of LHR, Nanjido Landfill site, Metropolitan Landfill site, and Hwasung Landfill site were evalulated. LHR scores of the above-mentioned landfills were 55, 19, and 7 respectively.

치근단절제술 후 Cold-burnished Gutta-percha가 치유에 미치는 임상적 연구

홍한표,조용범,홍찬의 단국대학교 치의학연구소 1994 논문집 Vol.6 No.1

The purpose of this retrospective study was to radiographically evaluate the apical sealing efficacy of cold-burnished gutta-percha as a root-end filling material. Radiographs of 41 teeth from 37 patients were used, with the recall period ranging from a minimum of 1 yr to a maximum of 6.7 yr. Radiographic findings were classified into one of three groups: 1. complete healing; 2, incomplete healing(scar tissue); 3, unsatisfactory healing. The results were as follows: 1. There was no significant difference in frequency of operation between male and female. 2. The teeth most frequently operated on were the maxillary central incisors (39%). The Maxillary lateral incisors were the second largest group in frequency at 34%. 3. Patients between 21 and 40 yr of age formed the single largest group. 4. Complete healing was found in 58.5% of the recall cases, while incomplete and unsatisfactory healing occurred in 34.2% and 7.3% of the cases, respectively. Based on this retrospective study, We concluded that 38 of 41 cases(92.7%) were considered to be successful and 3 cases (7.3%) were determined to be failures.

치근이개부 천공부위에 대한 수종수복재의 치유효과에 관한 조직병리학적 연구

신동훈,홍찬의,홍한표 大韓齒科保存學會 1995 Restorative Dentistry & Endodontics Vol.20 No.2

PCR을 이용한 Rat 기관지 세척액에서의 Pneumocystis carinii DNA의 검출 : 기초실험 A pilot study

김주옥,홍석철,한표성,이종진,김선영,이영하,신대환 충남대학교 의과대학 지역사회의학연구소 1994 충남의대잡지 Vol.21 No.1

Background: Pneumocystis carinii (PC) is a opportunistic pathogen causing serious pneumonia (Pneumocystis carinii pneumonia : PCP) in immunosuppressed patients including AIDS. Laboratory diagnosis of PCP is dependent on microscopic demonstration of the PC by using cytochemical staining or by immunocytochemical staining with monoclonal antibodies. However, these staining methods are not highly sensitive. The development of the polymerase chain reaction (PCR) has made it possible to detect very small numbers of pathogens in clinical specimens. To establish the usefulness of PCR for detection of PC DNA, We performed PCR as a pilot study. Methods: PCP was induced on Spraque-Dawley rats with prednisolone 5mg IM twice a week. Bronchial lavages, impression smears, and permanent sections were performed from the 3rd week to 7th week of cortisonized rats. PC DNA was extracted with bead beater / 10% CTAB method. Results: Impression smears showed PC cyst after the 4th week (100%, 28/28 rats), and permanent sections showed 27/28 rats. Control rats showed some PC cysts (2/7). PCR result was positive only one case among the 6th week rats (1/7), But positive 6 cases at the 7th week rats, (6/7). Among control rats. 2 cases were positive (2/7). ??This data is a pilot study for the PC DNA detection using a PCR. PCP were successfully cortisonized rats. If adequate bronchial washing technique will be used, PCR can be a sensitive for PC DNA detection.

일 농촌지역의 우울 증상에 관한 역학연구 -위험요인 및 요인구조분석

하양숙,홍진표,김한규,이군희,한경자,조맹제,김용익,송미순,박성애,김창윤 大韓神經精神醫學會 1999 신경정신의학 Vol.38 No.2

연구목적 : 세계적으로 널리 사용되는 우울증 척도인 the Center for Epidemiologic Studies Depression Scale(CES-D)을 이용하여 지역사회 주민의 우울증상의 정도를 평가하고, 우울증상의 위험요인을 분석하고, 한국인에서 우울증상의 요인구조를 알기 위해 본 연구를 실시하였다. 방 법 : 경기도 일 농촌 지역의 30세 이상 주민에 대해 무작위 군집 집락 추출을 실시하였고, 훈련된 면담원들이 가정 방문을 통하여 면접 및 자기보고 검사인 CES-D를 실시하였다. 총 1,315명에서 응답을 하였고 응답율은 59.3%이었다. 결 과 : CES-D에 의한 우울증 점수는 0∼5점이 57%정도를 차지하였고, 평균 점수는 남자 7.8점 여자 9.5점으로 비교적 낮은 편이었다. ANCOVA 분석 결과 비결혼, 저학력, 여성이라는 위험요인은 독립적으로 우울증상을 악화시키는 요인이었으나 연령은 통계적으로 유의하지 않았다. CES-D 결과를 요인분석을 시행한 결과 4가지 요인이 추출되었는데 우울증상 및 신체증상이 한 개의 요인으로, 다른 나라에서 보고되지 않는 정서적 고통이 별도의 요인으로 추출되었다. 결 론 : 국내 역학 조사에서도 외국과 유사한 우울점수 및 위험요인이 확인되었으나 우울증의 요인에서는 특이한 요인이 추출되었다. 한국인에 독특한 우울 반응에 관한 추가 연구가 필요하다. Objectives :The rates, correlates, and factor structure of depressive symptoms in a Korean rural sample were examined using Korean version of the Center for Epidemiologic Studies Depression Scale(CES-D). Methods : Door to door visiting survey was conducted by trained interviewers. A random cluster sample of 1,315 respondents, aged 30 and over completed the CES-D scale along with additional sociodemographic questionnaire. Results : In this sample, mean CES-D score of male and female were 7.8 and 9.5, respectively which were lower than those reported previously. Symptoms of depression were most common among the less educated, non-married and female according to ANCOVA. Age was not a significant risk factor for depressive symptoms. Different factor structures emerged from this sample as compared to other studies using this approach. Somatic symptoms and affective symptoms were combined as one factor and emotional hardship emerged as a separate factor. Conclusion : Symptoms scores and risk factors were similar to the results reported in other countries but unique factor structures were found in this study. Further research is needed about the Korean depressive symptomatology and related areas.

근관내 여러 조건에서의 ROOT ZX 전자근관장 측정기의 정확성에 관한 연구

조용범,홍한표,홍찬의 단국대학교 치의학연구소 1994 단국대치의학연구소논문집 Vol.6 No.1