노동 : 거꾸로 본 지하철 노동조합운동

최정한 사회평론 1992 월간 사회평론 Vol.92 No.9

녹내장 치료 시 점안약 치료 후 안부작용에 관한 연구

최정한,박정원,박상우,Jung Han Choi,Jung Won Park,Sang Woo Park 대한안과학회 2013 대한안과학회지 Vol.54 No.5

Purpose: To investigate the influence of number and type of side effects as well as treatment period after the use of anti- glaucoma eye drops in patients with glaucoma. Methods: A survey was conducted regarding the severity of ocular side effects after the use of anti-glaucoma eye drops in 528 patients with glaucoma. Side effects after using the eye drops included irritability, blurred vision, foreign body sensation, hyperemia, pinpricking sensation, itching, discomfort, pain, tearing, dry eye, and pigmentation. We analyzed the results to investigate the influence of number and type of side effects as well as treatment period. Results: The side effects after the use of anti-glaucoma eye drops were more severe and frequent in the patient groups using more than 1 eye drop (p < 0.01) and in the patients with longer treatment period (p < 0.01). Among patients using 1 eye drops, side effects developed frequently in patients using Ocucarpine<sup>®. Conclusions: In patients with glaucoma, using more than 1 anti-glaucoma eye drop or having a longer treatment period resulted in more side effects. Similaryly, patients using only 1 eye drop of Ocu-carpine<sup>® induced more side effects.

내부연결 임플란트 상부구조물에서 나사조임술식이 풀림토크값에 미치는 영향

최정한,Choi, Jung-Han 대한치과보철학회 2010 대한치과보철학회지 Vol.48 No.4

연구 목적: 본 연구는 잘 맞는 임플란트 상부구조물에서 서로 다른 나사조임순서와 조임방법이 나사의 풀림토크값에 미치는 영향을 평가하였다. 연구 재료 및 방법: 서로 수동적 적합 관계를 갖는 완전 무치악 하악 주모형과 네 개의 평행한 임플란트 (Astra Tech)에 직접 연결되는 금속구조물을 제작하였다. 금속구조물과 잘 맞는 실험모형을 위해 주모형에서 연결인상법을 이용하여 여섯 개의 경석고 모형을 얻었다. 20 Ncm로 조인 후 나사의 풀림토크값을 두 번 측정하였다. 세 가지 나사조임순서 (1-2-3-4, 2-4-3-1, 그리고 2-3-1-4)와 두 가지 나사조임방법 (two-step과 one-step)에 대한 나사의 풀림토크값과 최소풀림토크값을 유의수준 .05에서 각각 다원분산분석법 (multi-way ANOVA)과 이원분산분석법 (two-way ANOVA)을 이용하여 통계분석 하였다. 결과: 나사조임순서에 대한 나사의 평균 풀림토크값은 12.8 Ncm (2-4-3-1)에서 13.1 Ncm (2-3-1-4)의 값을 보였고, 나사조임방법에 대한 값은 13.1 Ncm (two-step)와 11.8 Ncm (one-step)였다. 나사조임순서에 대한 나사의 평균 최소풀림토크값은 11.1 Ncm (1-2-3-4)와 11.2 Ncm (2-4-3-1과 2-3-1-4)였고, 나사조임방법에 대한 값은 11.2 Ncm (two-step)와 9.9 Ncm (one-step)였다. 나사의 풀림토크값과 최소풀림토크값은 세 가지 나사조임순서 간에 통계학적으로 유의성 있는 차이가 없었다. 그러나 두 가지 나사조임방법 간에는 두 값 모두 통계학적으로 유의성 있는 차이가 있었다. 나사를 두 단계로 나누어 조이는 방법이 한 번에 조이는 방법보다 더 큰 풀림토크값 (P = .0003)과 더 큰 최소풀림토크 값 (P = .0035)을 보였다. 결론: 본 연구와 같은 조건하에서, 연결인상법으로 얻은 잘 맞는 임플란트 상부구조물에 있어서 나사조임순서는 나사의 풀림토크값에 영향을 미치는 중요한 요소는 아니었다. 그러나 나사를 두 단계로 나누어 조이는 방법은 한 번에 조이는 방법보다 더 큰 풀림토크값을 보였다. Purpose: This study evaluated the effect of different screw tightening sequences and methods on detorque values in a well-fitting implant superstructure. Materials and methods: A fully edentulous mandibular master model and a metal framework directly connected to four parallel implants (Astra Tech) with a passive fit to each other were fabricated. Six stone casts were made with a splinted impression technique to represent a 'well-fitting' situation with the metal framework. Detorque values were measured twice after screw tightening using 20 Ncm. Detorque values and minimum detorque values for three screw tightening sequences (1-2-3-4, 2-4-3-1, and 2-3-1-4) and for two tightening methods (two-step and one-step) were analyzed using multi-way analysis of variance and two-way analysis of variance, respectively, at a .05 level of significance. Results: The mean detorque values for screw tightening sequences ranged from 12.8 Ncm (2-4-3-1) to 13.1 Ncm (2-3-1-4), and for screw tightening methods were 13.1 Ncm (two-step) and 11.8 Ncm (one-step). The mean of mimimum detorque values for screw tightening sequences were 11.1 Ncm (1-2-3-4) and 11.2 Ncm (2-4-3-1 and 2-3-1-4), and for screw tightening methods were 11.2 Ncm (two-step) and 9.9 Ncm (one-step). No statistically significant differences among three screw tightening sequences were found for detorque values and for mimimum detorque values. But, statistically significant differences between two screw tightening methods were found for two values. Two-step screw tightening method showed higher detorque value (P = .0003) and higher minimum detorque value (P = .0035) than one-step method. Conclusion: Within the limitations of this study, the screw tightening sequence was not a critical factor for the detorque values in a well-fitting implant superstructure by the splinted impression technique. But, two-step screw tightening method showed greater detorque values than one-step method.

임상적 방법을 이용한 내부연결 임플랜트에서 고정체수준 인상법의 정확도 평가

최정한,Choi Jung-Han 대한치과보철학회 2006 대한치과보철학회지 Vol.44 No.4

Statement of problem : Accurate impression is essential to success of implant prostheses. But there have been few studies about the accuracy of fixture-level impression technique in internal connection implant system. Purpose: This study evaluated the accuracy of splinted fixture-level impression technique using clinical methods and the effect of internal hex on fit of superstructure in internal connection implant system (Astra Tech). Material and method : Two metal master frameworks made from two abutments (Cast-to Abutment ST) each for parallel and divergent conditions and a corresponding. passively fitting, dental stone master cast with four future replicas (Fixture Replica ST) were fabricated. Ten dental stone casts were made with vinyl polysiloxane impressions from the master cast by acrylic resin splinted fixture-level impression technique. To evaluate the accuracy of impression technique, the fit of master frameworks for test models was evaluated using screw resistance test (SRT) and one-screw test. The results of SRT were recorded as SRT values from grade 1 to grade 5 by 1/4 turn. And to evaluate the effect of hex on fit of superstructure, the same tests were performed after removing hexes of master frameworks. Results: 1. There was only one case (2.5%) showing SRT value of test model below ade 2 in total before and after removing hexes of master frameworks. And, by removing hexes. SRT values decreased in only one test model (5%) and did not change in 17 test models (85%). 2. SRT values of the 1$^{st}$ screws were grade 2 in 80% of cases before, and grade 1 in 80% of cases after removing hexes. And, by removing hexes, SRT values decreased in 72.5% of cases. 3. SRT values of the 2$^{nd}$ screws were grade 3 in 85% of cases before, and grade 3 in 95% of cases after removing hexes. And, by removing hexes, SRT values did not change in 85% of cases. 4. There were only 2 cases regarded as acceptable fit by one-screw test, and SRT values of 2$^{nd}$ screws of both cases were grade 2. Conclusion. Within the limitations of this study, future-level impression of internal connection implant system is considered to obtain inaccurate working cast, even using acrylic resin splinted impression technique. And, it is considered to be unable improve the fit to remove the hexes of implant restoration.

현단계 보행권 회복운동의 전망과 과제

최정한 한국공간환경학회 1997 공간과 사회 Vol.8 No.-

임플랜트 지지 상부구조물에서 나사조임순서와 조임방법이 풀림토크값에 미치는 영향

최정한,김창회,임영준,김명주,이석형,Choi, Jung-Han,Kim, Chang-Whe,Lim, Young-Jun,Kim, Myung-Joo,Lee, Seok-Hyung 대한치과보철학회 2007 대한치과보철학회지 Vol.45 No.5

Statement of problem: The screw detorque value is a measure of the preload remaining in the screw just before detorquing. Purpose: This study evaluated the effect of different screw tightening sequences and tightening methods on detorque values for a well-fitting implant superstructure. Material and method: An implant superstructure that connected directly to four implants (Astra Tech) was fabricated on a fully edentulous mandibular acrylic resin model. Six well-fitting dental stone casts were made with a pickup impression of the superstructure from the acrylic resin model. To evaluate the effect of three screw tightening sequences (1-2-3-4, 2-4-3-1, and 2-3-1-4) and two tightening methods (2-step and 1-step) on the stability of screw joint, the detorque values for a well-fitting implant superstructure were measured twice after screw tightening using 20 Ncm. Detorque values were analyzed using multi-way analysis of variance and two-way analysis of variance at a .05 level of significance. Results: 1. The mean detorque values for three screw tightening sequences were 12.3 Ncm, 12.6 Ncm, and 12.0 Ncm, respectively. 2. The mean detorque values for two screw tightening methods were 12.0 Ncm, and 12.2 Ncm, respectively. 3. The mean of mimimum detorque values for three screw tightening sequences and for two tightening methods were 10.6 Ncm, 11.1 Ncm, 10.5 Ncm, and 9.8 Ncm, respectively. 4. No statistically significant differences among the variables of screw tightening sequence and tightening method were found (p>.05) for detorque values and for mimimum detorque values. Conclusion: Within the limitations of this study, the screw tightening sequence and tightening method did not have a significant effect on the detorque values for a well-fitting implant superstructure.

Comparative accuracy of the splinted and unsplinted impression methods for internal connection

최정한,김창회,장경수,임영준 대한치과보철학회 2005 대한치과보철학회지 Vol.43 No.3

욕망의 플랫폼 홍대앞 클럽

최정한 부산대학교 한국민족문화연구소 2011 로컬리티 인문학 Vol.0 No.5

얼굴 전산화 단층촬영 사진을 이용한 안와 용적의 측정

최정한,박인기,최삼진,신재호 대한안과학회 2015 대한안과학회지 Vol.56 No.2

목적: 얼굴 전산화 단층촬영 사진의 축영상과 관상영상을 반자동화 프로그램을 이용하여 안와 용적을 측정 및 비교하고자 하였다. 대상과 방법: 얼굴 전산화 단층촬영을 시행한 30대 정상 성인 남성 17명, 여성 18명에 대하여, 안와 용적의 측정이 가능한 반자동화프로그램(MATLAB 2009a)을 이용하여 얼굴 전산화 단층촬영 사진의 축영상과 관상영상의 안와 단면적을 각각 측정하였고, 측정 단면적을 누적하여 안와 용적을 계산하여 이를 비교 분석하여 보았다. 결과: 안와 용적의 측정 결과, 남성은 축영상에서 우측 26.34 ± 3.09 cm3, 좌측 26.30 ± 3.21 cm3, 관상영상에서 우측 26.58 ±2.76 cm3, 좌측 26.59 ± 2.75 cm3로 측정되었으며, 여성은 축영상에서 우측 23.84 ± 2.29 cm3, 좌측 23.89 ± 2.33 cm3, 관상영상에서 우측 24.06 ± 2.90 cm3, 좌측 24.10 ± 2.82 cm3로 측정되었다. 축영상과 관상영상을 통해 계산한 안와 용적은 유의한 양의 상관관계(r=+0.832, p=0.0001)를 보였고, 안와 용적의 평균값은 유의한 차이를 보이지 않았다(p=0.006). 결론: 본 연구 결과에서 얼굴 전산화 단층촬영 사진은 비침습적인 방법으로 특별한 추가 장치 없이 안와 용적을 측정하는 데에 매우유용한 도구이며, 이 방법을 통해 여러 안질환에서 안와 용적 변화에 대한 추가 연구에 도움이 될 수 있을 것으로 생각한다. Purpose: To measure the orbital volume from facial CT scans using a semi-automatic computer program. Methods: Axial and coronal slices of 35 facial CT scans were used to measure the orbital volume. The cross-sectional area was determined from each slice using a semi-automated computer program (MATLAB 2009a). Next, the orbital volume was calculated from serial reconstruction of the cross-sections. Results: The measured value in males was 26.34 ± 3.09 cm3 in the right orbit and 26.30 ± 3.21 cm3 in the left orbit from axial scans, and 26.58 ± 2.76 cm3 in the right orbit and 26.59 ± 2.75 cm3 in the left orbit from coronal scans. In females, the values were 23.84 ± 2.29 cm3 in the right orbit and 23.89 ± 2.33 cm3 in the left orbit from axial scans, and 24.06 ± 2.90 cm3 in the right orbit and 24.10 ± 2.82 cm3 in the left orbit from coronal scans. There was high positive correlation (r = +0.832, p = 0.0001) in measured orbital volume between axial and coronal scans. Conclusions: The orbital volume measurement from facial CT scans using a semi-automatic computer program is very useful. This method should prove useful in further studies examining the correlation of orbital volume variation in many ophthalmologic disorders.

婦人服 原型의 比較硏究

崔貞閑 朝鮮大學校 師範大學 1974 師大論文集 Vol.5 No.-