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치과 임플랜트 고정체의 형태 설계의 차이에 따른 응력의 삼차원적 유한요소 분석
이문령,조인호 단국대학교 치의학연구소 1993 논문집 Vol.5 No.-
The purpose of this study was to compare and analyze the distribution of stress generated in and around the cylindrical implant fixtures with different shapes of flute. Four kinds of implant models designed for this study were as follows: Design Ⅰ : Triple non-end fluted fixture Design Ⅱ : Triple end fluted fixture Design Ⅲ : Triple non-end fluted ; 90 degree modified fluted fixture Design Ⅳ : Non fluted fixture Three dimensional finite element analysis was used for this study. The following results were obtained : 1. In the interface A and B, all the tested implants showed maximum stress value at the cervical portion of implant. 2. According to the shape of implant fixture, the difference of stress was great in the interface A, but little in the interface B. 3. According to the shape of flute, there were some differences in amount of stress concentration. 4. As a result of comparative analysis of stress distribution in the interface A, similar distributions were appeared in designⅠ and design Ⅱ, but a lower stress value was estimated in design Ⅰ than design Ⅱ, and stress value in design Ⅲ and Ⅳ were greater than design Ⅰ and Ⅱ. 5. Relatively small stress was distributed around the apical portion of the interface B. It was considered as the typical pattern of stress distribution in cylindrical implant.
방사선조사 이후 자궁경관 및 자궁내막에 발생한 악성 혼합뮬러씨 종양 1 예
이문령(Moon Tyung Lee),박현태(Hyun Tae Park),박선영(Sun Young Park),신진우(Jin Woo Shin),박용수(Yong Soo Park),이용호(Yong Ho Lee),김영태(Young Tae Kim),이규완(Kyu Wan Lee) 대한산부인과학회 2000 Obstetrics & Gynecology Science Vol.43 No.10
Malignant mixed m llerian tumor is a rare tumor of gynecologic cancers, occurs most in postmenopausal ages, but is increased in frequency in youger ages having previous radiation history. Herein we report a case of homologous malignant mixed m llerian tumor of the uterine cervix and endometrium, which found in follow-up after radiation therapy for cervical squamous cell carcinoma, based on clinicopathologic findings with a brief review of literature.
치과 임플랜트를 이용한 보철수복시 자연지대치와의 연결형태에 따른 응력의 광탄성학적 분석
林鍾和,李文嶺,曺仁鎬 단국대학교 치의학연구소 1992 논문집 Vol.4 No.-
The connection between natural tooth abutment and implant has been studied with various methods. This study compared the stress distribution during the function of four prosthesis with variant connection modalities design between natural tooth abutment and implant fixture. The four connection types are rigid, non-rigid, telescopic crown and free standing. Each specimen was examined and taken the photograph with 30Kg force. the results were as follows. 1. Generally, the implant fixture has more stress concentration than the natural tooth abutment. 2. The specimens using the free standing type and the telescopic crown connection showed less stress concentration than the other specimen. 3. Although maximum fringe order was not equal, stress distribution of the specimen using rigid connector was similar with that of used telescopic connection. But of the showed even stress distribution at the natural tooth abutment and implant fixture. 4. In the specimen using non-rigid connector, more and wide stress distribution was seen around implant fixture comparing with the other specimen. 5. In case of connecting the implant and natural tooth abutment, using the telescopic crown connection is adventageous in stress distribution, and manintenance of prothesis because of easy removal and reinsertion.
임플랜트에 의해 지지되는 Overdenture술식의 Bar설계변화에 따른 응력분석의 광탄성학적 연구
李濬壽,李文嶺,曺仁鎬 단국대학교 치의학연구소 1992 논문집 Vol.4 No.-
Since the concept of osseointegration was developed by Branemark, dental implant prosthesis are widely accepted by dental clinicians. There are two methods to treat edentulous patients by dental implant : One is an edentulous bone anchored fixed bridge and the other is an overdenture. The implant supported overdenture has several advantages. It is esthetically acceptable, easy to maintain good oral hygiene and more economic. Key factors that influence the success of osseointegration are quality of bone, integration between implant and bone, and loading condition. This study compared the diffrence in the stress patterns induced by variable bar design using photoelastic analysis. The results were as follows : 1. In the overdenture supported by two fixtures, three point loading on the bar showed more stress distribution than one point loading on the middle of the bar. 2. In the overdenture supported by the two fixtures, the more loading points went distally, the lager the stress became. 3. The stress distribution of the overdenture supported by four fixtures showed smaller than that of the overdenture supported by two fixtures.
상피성 난소암 환자에서 복합항암요법에 대한 반응성 평가시 혈중 CA125치의 유용성
김영태,이용호,이규완,이문령 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.1
목적 : 이 연구에서 저자는 복합항암요법을 받은 상피성 난소암 환자에서 반응성을 평가하는데 있어 혈중 CA125치의 효용성을 알아보고자 하였다. 연구대상 및 방법 : 고려대학교부속 안암병원 산부인과에서 1996년 2월부터 2000년 7월까지 paclitaxel과 cisplatin으로 복합항암요법을 시행받은 30명의 환자를 대상으로 WHO에 의한 반응성 기준과 혈중 CA125치의 차이에 의한 반응성 기준간의 관계를 분석해 보았다. 결과 : 1. 수술전 평균 혈중 CA125치는 2기에서 289U/ml, 3기에서 3021.5U/ml, 4기에서 19000U/ml였으며 임상병기가 진행될수록 혈중 CA125치는 높았으나 통계적 유의성은 없었다. 2. WHO 기준에 따른 paclitaxel과 cisplatin의 복합항암요법의 반응률은 30례중 14례에서 반응을 보여 46.7%였다. 3. 혈중 CA125치에 따른 paclitaxel과 cisplatin의 복합항암요법의 반응률은 30례중 17례로 56.7%였으며, 민감도는 78.6%, 특이도는 62.5%였다. 4. 생존률 예측에 있어 통계적으로 유의한 값을 가진 (p$lt;0.05) 혈중 CA125치의 감소비율은 항암치료가 2차에서 4차까지 끝난 뒤에 얻어진 값으로, 생존자에서는 혈중 CA125치의 감소폭이 컸으며 사망자에서는 오히려 증가하는 값을 보이기도 하였다. 5. WHO 기준에 따른 반응성과 생존률의 연관관계는 통계적 유의성은 없었으나 반응군에서 증가하는 경향을 보였다(p=0.0865). 혈중 CA125치를 기준으로한 반응성과 생존률의 연관관계는 수치가 증가할수록 생존률이 증가하는 경향을 보였지만 통계적 유의성은 없었다(p=0.1454). 결론 : 혈중 CA125치는 상피성 난소암 환자에서 기존의 WHO 기준과 함께 혹은 그에 대신하여 복합항암요법에 대한 반응성을 평가하는데 유용한 종양표지자이다. Objectives : This study was performed to identify the validity of serum CA125 level for assessing responsiveness to combined chemotherapy in patients with epithelial ovarian cancer. Materials and methods : 30 patients with epithelial ovarian cancer who had received postoperative combined chemotherapy (paclitaxel and cisplatin) at Department of Obstetrics and Gynecology, Korea University Medical Center, from February, 1996 to July, 2000 were included. We analyzed the relation between the responsiveness criteria of WHO and the change in serum CA125 level. Results : 1. There was a tendency that patients with more advanced stage(stage 1-4) had higher serum CA125 level without significant differences. 2. The percentage of patients who responded to paclitaxel and cisplatin was 46.7%(14/30) by WHO criteria and 56.7%(17/30) by serum CA125 level. 3. The sensitivity and specificity of serum CA125 level in the prediction of response were 78.6% and 62.5% respectively. 4. In a living group, the changes of percentage value in CA125 level were higher at 2nd, 3rd and 4th chemotherapy cycle than in an expired group(p$lt;0.05). 5. There was a tendency that the responsiveness based on WHO criteria and CA125 had positive correlation(p=0.0865). 6. There was a tendency that the responsiveness based on serum CA125 level and patient`s survival had positive correlation(p=0.1454). Conclusions : Serum CA125 level is a valid tumor marker in assessing the responsiveness to combined chemotherapy which can be used with or instead of the WHO criteria in epithelial ovarian cancer.
홍순철(Soon Choul Hong),이문령(Moon Ryung Lee),조수훈(Soo Hun Cho),김성건(Sung Gun Kim),장기훈(Ki Hoon Chang),김영태(Young Tae Kim),이규완(Kyu Wan Lee) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.5
Synchronous primary tumor is uncommon form of gynecologic malignancy. Synchronous tumor is defined as primary tumor diagnosed simultaneously or within 6 months of one another. The prognosis of the patients with synchronous malignancies was reported to be more favorable when compared to the survival of patients harboring the same neoplasms individually. We report a case of multifocal concurrent adenocarcinoma involving salpinx, ovary, uterine cervix, and endometrium as well as omentum with a brief review of literatures.