1.A Study On The Tensile Strength Between Metal Denture Base And Relining Materials.
Joon Seok LEE ; Ju Hwan LIM ; In Ho CHO
The Journal of Korean Academy of Prosthodontics 2000;38(1):1-11
Relining and rebasing are essential for long-term success and oral health in removable prosthodontics. Major features of failures between metal base and relining resins are adhesive failure due to lack of chemical bonding. The purpose of this study was to find a better metal primer and metal surface treatment method that enhance the bonding strength with relining resin materials. The surfaces of ticonium alloys were treated with 25micrometer sandblasting (Group A), stone wheel (Group B), stone wheel and EZ oxisor (Group C), 75micrometer sandblasting (Group D) and EZ oxisor application after 75micrometer sandblasting (Group E). They were subdivided into no primer application (Group I), MR bond application (Group II) and Metafast bonding liner (Group III). Then specimens were completed though being bonded with relining resins. The specimens were stored in 38degrees C water for 48 hours and tensile strength was measured using the universal testing machine. The results were as follows, 1. Primer application groups showed higher bond strength than no primer application group(p<0.05). 2. In comparison with primer application groups, MR bond group showed higher bond strength than Meta fast bonding liner application group(p<0.05). 3. In comparison with surface treatment methods. Bond strengths of group A and B were significantly different with group C, D, and E, and group C were significantly different with group D, and E in no primer application group(p<0.05). In primer application groups, group A, B, C were significantly different with group D and E(p<0.05). According to results of this study, Metal primer application and metal surface roughening were considered to be advantageous for relining of metal base dentures.
Adhesives
;
Alloys
;
Denture Bases*
;
Dentures*
;
Oral Health
;
Prosthodontics
;
Tensile Strength*
;
Water
2.The study of immune function in the repeaters of college enterance examination.
Ki Joo LEE ; Young Cho CHUNG ; Gi Seok HAN
Journal of Korean Neuropsychiatric Association 1992;31(1):60-67
No abstract available.
3.A case of Melkersson-Resenthal syndrome.
Seok June LEE ; Young Ho CHO ; Kyu Kwang WHANG
Korean Journal of Dermatology 1993;31(5):792-795
The Melkersson-Rosenthal syndrome consists of the associated of indings of facial nerve paralysis, facial swelling and scrotal tongue. We report a case of MRS where a 20 year old female had diffuse swelling on her face and lips for 10 years. This was also accompaiined with difficulty of facial expression and fissured tongue. The improved with intralesional injection: of triamcinolon acetonide 40mg for 3 consecutive weeks and 2 every other week.
Facial Expression
;
Facial Nerve
;
Facial Paralysis
;
Female
;
Humans
;
Injections, Intralesional
;
Lip
;
Melkersson-Rosenthal Syndrome
;
Tongue, Fissured
;
Young Adult
4.The Usefulness of Cytokeratin 7 and Colon Ovarian Tumor Antigen in the Differential Diagnosis of Primary and Metastatic Ovarian Tumors.
Eung Seok LEE ; Hyun Deuk CHO ; In Sun KIM
Korean Journal of Pathology 1998;32(3):201-207
Cytokeratin 7 has been known to be present in various types of human epithelial cells including the ovarian neoplasms, but not in colon cancers. The antibody to colon ovarian tumor antigen (COTA) has been introduced as a marker of colon and ovarian tumors. The aim of this study was to evaluate the usefulness of cytokeratin 7 and COTA in the differential diagnosis between ovarian primary and metastatic tumors. Nineteen primary ovarian epithelial tumors, seven metastatic carcinomas of the ovary from the stomach, three metastatic carcinomas of the ovary from the colon, one mucinous tumor of the ovary associated with a mucinous tumor of the appendix and pseudomyxoma peritonei, and nineteen colonic and twenty gastric adenocarcinomas were stained with monoclonal antibodies to cytokeratin 7 and COTA. The results are summerized as follows; In the primary ovarian tumors, 94.4% were positive for cytokeratin 7 and 50% were positive for COTA. In the primary colonic adenocarcinomas, 94.7% were negative for cytokeratin 7 and 68% were positive for COTA. In the metastatic ovarian tumor from the colonic adenocarcinomas, 100% were negative for cytokeratin 7 and positive for COTA. In the primary gastric adenocarcinomas, 40% were negative for cytokeratin 7 and 85% were negative for COTA. In the metastatic ovarian tumor from the gastric adenocarcinomas, 43% were negative for cytokeratin 7 and 14% were negative for COTA. From the results of this study, it could be concluded that in the differential diagnosis of primary ovarian tumors from metastatic colonic carcinomas, positive reaction for cytokeratin 7 suggests a primary ovarian tumor but a negative reaction for cytokeratin 7 and positive reaction for COTA suggest metastatic colonic carcinomas. The results of this study also reveal that cytokeratin 7 and COTA are not useful in the differential diagnosis of primary ovarian tumors from metastatic gastric carcinomas.
Adenocarcinoma
;
Antibodies, Monoclonal
;
Appendix
;
Colon*
;
Colonic Neoplasms
;
Diagnosis, Differential*
;
Epithelial Cells
;
Female
;
Humans
;
Keratin-7*
;
Keratins*
;
Mucins
;
Ovarian Neoplasms
;
Ovary
;
Pseudomyxoma Peritonei
;
Stomach
5.An Experimental Study of Osteoporosis Produced by Oophorectomy and /or Immobilization in Rats
Seok Hyun LEE ; Eung Nam CHA ; Chang Sung CHO
The Journal of the Korean Orthopaedic Association 1995;30(3):779-786
Previous studies implied association of osteoporosis with estrogen deficiency, immobilization and low calcium absorption only through epidemiological studies. There have been only a few experimental studies verifying the etiologic factors of osteoporosis in vivo condition. Authors conducted an experimental study using white rats(Sprague Dawley) in order to find out what the endocrinological and biochemical changes of experimentally induced osteoporosis are and how they behave with or against each other. White rats, eighty five in number of 3 to 6 months females and weighing 220±12.7gm were divided into four groups. They consisted of Group I(n=10) for control, Group II(n=25) for bilateral oophorectomy, Group III(n=25) for bilateral division of sciatic nerve and hip spica cast immobilization, and Group IV(n=25) for bilateral oophorectomy and bilateral division of sciatic nerve plus hip spica cast immobilization. Blood samples were taken preoperatively and postoperatively at six weeks to check Estradiol and Osteocalcin levels there of. And then, rats were sacrified immediately after the second sampling to retrieve femora for bone mineral density measurement and torsional stress test. Estradiol levels before operation were 21.4±13.3pg/ml for Group I, 31.6±3.1pg/ml for Group II, 25.6±4.5pg/ml for Group III and 33.7±4.5pg/ml for Group IV, respectively. There were no significant differences observable among the groups. Estradiol levels at six weeks postoperatively were 42.3±18.8pg/ml for Group I, 5.4±2.7pg/ml for Group II, 40.8±5pg/ml for Group III and 6.2±2.3 pg/ml for Group IV, respectively. Apparent reductions in group II and IV were proved of statistical significance. Osteocalcin levels preoperatively were 1.2±0.6ng/ml for Group I, 1.7±0.4ng/ml for Group II, 1.5±0.1lng/ml for Group III and 1.5±0.1.lng/ml for Group IV, respectively. At six weeks postoperatively they were 1.6±0.1lng/ml for Group I, 1.7±0.3ng/ml for Group II, 1.8±0.3ng/ml for Group III and 1.2±0.1lng/ml for Group IV, respectively. The differences and changes among the groups and measurements were not of statistical significance. Bone mineral contents at six weeks postoperatively were 0.248±0.03g for Group I, 0.177±0.03g for Group II, 0.226±0.04g for Group III and 0.092±0.01g in Group IV, respectively. Low values of Group II and IV compared to those of Group I and III were of statistical significance.(P=0.0001) Torsional strength of bones at six weeks postoperatively were 4.0±0.2N/m for Group I, 1.5±0.1N/m for Group II, 1.5±0.1N/m for Group III and 1.4±0.1N/m for Group IV, respectively. Decreases of experimental groups(II, III, IV) compared to that of control group(I) were of statistical significance, but differences among the experimental groups were not of significance(p>0.05). For above observations, it was possible to conclude that osteoporosis measurable by bone mineral content and torsional stress test was caused by oophorectomy and immobilization in vivo, the former of which was more rapid and profound than the latter during early phase. When both factors, i.e., oophorectomy and immobilization are exerated simultaneously. the resultant osteoporosis was found in higher degree than either factor only, but not at incremental degree as one may expect.
Absorption
;
Animals
;
Bone Density
;
Calcium
;
Epidemiologic Studies
;
Estradiol
;
Estrogens
;
Exercise Test
;
Female
;
Hip
;
Humans
;
Immobilization
;
Osteocalcin
;
Osteoporosis
;
Ovariectomy
;
Rats
;
Sciatic Nerve
6.A Serial Rapist - Male Identification and Crime Scene Analysis in the Cases of a Serial Rapist.
Nam Soo CHO ; Seok Bean SONG ; Il Hyun PARK ; Sang Yong LEE ; Joong Seok SEO
Korean Journal of Legal Medicine 2005;29(1):47-51
The study presents the application of STR polymorphisms to male identification in the cases of a serial rapist in Korea. Since October 2000 a rapist from Cheongju city (a town located in central district) committed at least 36 rapes. DNA profiles obtained from semen stains, buccal cells and tongue tissue left at the scenes of crime and vaginal swabs of victims gave information that one and the same man had committed all the rapes. The Y-chromosome haplotype (12 loci) obtained was used for the identification process of rapist in mixed genotypes including victim's alleles. The crime scene data were referred from investigating police authorities described the relationship of victim to the offender, victim's age, time and place of sexual assault and rape locations. The behavioural analysis of crime scenes showed more similarities than differences for related crimes. These components were usually assessed in terms of proximity in time and space. Certain crime scene aspects of a serial rapist help identify components of offender spatial behaviour. As a result of this work, future research on the geography of rape and behavioural aspects of rapist will be directed towards those aspects of offences, which have been identified as relevant to the distance between an offender's base, and the site where he approached his victim.
Alleles
;
Chungcheongbuk-do
;
Coloring Agents
;
Crime*
;
Criminals
;
DNA
;
Genotype
;
Geography
;
Haplotypes
;
Humans
;
Korea
;
Male*
;
Police
;
Rape
;
Semen
;
Tongue
7.Transfusion Associated Hyperkalemia and Cardiac Arrest in an Infant after Extracorporeal Membrane Oxygenation.
Do Wan KIM ; Kyeong Ryeol CHEON ; Duck CHO ; Kyo Seon LEE ; Hwa Jin CHO ; In Seok JEONG
Korean Journal of Critical Care Medicine 2015;30(2):132-134
Cardiac arrest associated with hyperkalemia during red blood cell transfusion is a rare but fatal complication. Herein, we report a case of transfusion-associated cardiac arrest following the initiation of extracorporeal membrane oxygenation support in a 9-month old infant. Her serum potassium level was increased to 9.0 mEq/L, soon after the newly primed circuit with pre-stored red blood cell (RBC) was started and followed by sudden cardiac arrest. Eventually, circulation was restored and the potassium level decreased to 5.1 mEq/L after 5 min. Extracorporeal membrane oxygenation (ECMO) priming is a relatively massive transfusion into a pediatric patient. Thus, to prevent cardiac arrest during blood-primed ECMO in neonates and infants, freshly irradiated and washed RBCs should be used when priming the ECMO circuit, to minimize the potassium concentration. Also, physicians should be aware of all possible complications associated with transfusions during ECMO.
Blood Transfusion
;
Death, Sudden, Cardiac
;
Erythrocyte Transfusion
;
Erythrocytes
;
Extracorporeal Membrane Oxygenation*
;
Heart Arrest*
;
Humans
;
Hyperkalemia*
;
Infant*
;
Infant, Newborn
;
Potassium
8.Angiolymphoid hyperplasia with eosinophilia:a case report
Young Kyun KIM ; Hwan Ho YEO ; Cheol Woo LEE ; In Seok YANG ; Se In CHO ; Jae O CHO
Journal of the Korean Association of Maxillofacial Plastic and Reconstructive Surgeons 1993;15(1):27-34
No abstract available.
Hyperplasia
9.Two Cases of Primary Transitional Cell Carcinoma of Ovary.
Young Seok CHO ; Chan LEE ; Eun Hye LEE ; Tae Won SUNWOO ; Yong Hee LEE ; Jin Ho CHO
Korean Journal of Gynecologic Oncology and Colposcopy 2000;11(1):97-102
Primary transitional cell carcinoma of ovary has been recently recognized as a separate subtype of epithelial cancer. It is unusual tumor and in which definite urothelial features are present, but no benign Brenner component is identified. These tumor are more aggressive and tend to present at a higher stage than malignant Brenner tumors, but they appear to respond better to chemotherapy than other type of ovarian epithelial cancer. We have experienced two cases of ptimary transitioaal cell carcinoma of ovary. So we report these cases with a brief review of literature.
Brenner Tumor
;
Carcinoma, Transitional Cell*
;
Drug Therapy
;
Female
;
Ovary*
10.Polycystic ovary in torsion combined with stage in endometrial carcinoma.
Jung In YANG ; Suk Jung KIM ; Byung Seok LEE ; Dong Jei CHO ; Kook LEE ; Chan Ho SONG
Korean Journal of Obstetrics and Gynecology 1991;34(10):1481-1487
No abstract available.
Endometrial Neoplasms*
;
Female
;
Ovary*