No abstract available.
Denture, Partial, Fixed*

Indirect composite resin are used as an popular effective esthetic material in prosthetic dentistry, often with metallic substructure that provides support for restorations. Recently, new indirect composite resins as a substitute of ceramic have been developed. These resins provide good esthetics, with a wide range of hue and chroma. And the flexural strength of those is in the range of 120-150MPa, which is higher than that of feldspathic ceramic, and similar tot hat of Dicor. Although it has many merits, one of the major clinical problems of composite resins is the bond failure between metal and resin due to insufficient interfacial bond strength. The purpose of this study was to evaluate shear bond strength of the reinforced indirect composite resin to dental alloys. Three different composite resin systems(Artglass . Sculpture , Targis ) as test groups and ceramic(VMK 68 ) as control group were bonded to Ni-Cr-Be alloy(Rexillium III ) and gold alloy(Dave 4). All specimens were stored at 37degrees C distilled water for 24 hours and the half of specimens were thermocycled 2000 times at temperature from 5degrees C to 60degrees C. The shear bond strengths of reinforced indirect composite resins to dental alloys were measured by using the universal testing machine, and modes of debonding were observed by stereoscope and scanning electron microscope. The results were as follows : 1. The shear bond strengths of reinforced indirect composit resins to dental alloys were approximately half those of ceramic to dental alloys(P<0.01). 2. There was no significant difference between the shear bond strength of several reinforced indirect composite resins to metal. 3. Alloy type did not affect on the shear bond strengths of resin to metal, but the shear bond strengths of ceramic to gold alloys were higher than those of ceramic to Ni-Cr alloys(P<0.05). 4. The shear bond strenghts of Artglass and Targis to gold alloys were significantly decreased after thermocycling treatment(P<0.01). 5. Sculpture showed cohesive, adhesive, and mixed failure modes, but Artglass and Targis showed adhesive or mixed failures. And ceramic showed cohesive and mixed failures.
Adhesives ; Alloys ; Ceramics ; Composite Resins* ; Dental Alloys* ; Dentistry ; Esthetics ; Gold Alloys ; Sculpture ; Water

Thirty two patients wha had undergone operations were given a slow extradural narcotic injection. Patients were divided into three groups: First Group: extradural administration of pentazocine 30 mg to 10 adult patients. Second Group: extradural administration of pethidine 50 mg to 10 adult patients. Third Group: extradural administration of low-dose morphine(2 mg) in 10 ml of poysiologic saline to 12 adult patients. The epidural catheter had been left in situ and the patients instructed to request further analgesia in the postoperativly as neded. All case had considered amelioration of pain which became evident with in 2 to 15 minutes and was effective from 1 hour to complete relieve. They had also received an intramuscular injection of atropine sulfate(0.01 mg/kg) and valium (0.2 mg/kg) for premedication 30 minutes prior to sending to the operating room. The conclusions are as follows: 1) The morphine(2 mg) administered by continuous epidural injection is superior to other groups for relief of pain. It suggested that analgesic effect was concerned with drug dosage (Table 4). 2) Third group(morphine) was signficantly higher than other groups in statistical mean analgesic score analysis compared with the other groups. It suggested that significantIy high analgesic score was concerned with the pharmacologic action of the drug effect. 3) Before and after epidural injection of drugs, a statistical pulse change in the second group was significant but the other vital sign changes in all the group was not significant (Table 7). It suggested that significant pulse change was concerned with direct drug action and operative stress. 4) The subject requires study for mechanism, adverse effect and its prevention of narcotic administration in epidural space. Consequently it is suggested that continuous epidural injection of pethidine or' pentazoine is the optimum method of postoperative pain relief, only that when morphine is given, contin-uous epidural injection should be the method of choice.
Adult ; Male ; Female ; Humans

There have been several methods to prevent the recurrence after pterygium surgery, but no satifactory method has been brought forth. The value of mitomycin, which appeares to offer an important contribution to control the recurence of pterygium postoperatively, seems to be due to its anticancerous effect. Also it can be used himself easily. 1. We instilled Mitomycin solution after Pterygium surgery to the 85 eyes (77 Patients) visited to the department of Ophthalmology, Seoul National Univ. Hospital from July, 1969 to March, 1971. 2. Mitomycin solution was instilled three times a day since postoperative first day for one to two weeks. The solution was prepared by solving the Mitomycin-S in the 5cc of distilled water or Mitomycin-C in the 5cc of of physiologic saline sloution, so the concentration of solution was 0.4mg per cc. 3. We used bare sclera method in pterygium surgery and all the members of staffs and residents participated in. 4. Follow-up study was done by direct examinations or questionnaires. The period of the follow-up was at least 6 months to 26 months. We recieved the answers of 58 eyes, among which 56 eyes(96.6%) did not recur and only 2 eyes (3.4%) recurred. Of no recurrent cases 42 eyes (75%) were cosmetically satisfactory and 14 eyes (25%) were moderately satisfactory by means of the patients themselves evaluation. 5. Many authors said that the operative technique contributes to the rate of recurrence, so we compared the result of staffs' cases with that of residents' in 58 eyes. There was no significant difference in the recurrence rate between staff' and residents' cases inspite of the unskillful techniques of residents. 6. Sid effects of Mitomycin solution appeared in 2 eyes; one had corneal erosion and edema, another severe conjunctival congestion and chemosis which disappeared within a few days by ceasing the instilltation of mitomycin solution.
Edema ; Estrogens, Conjugated (USP) ; Follow-Up Studies ; Humans ; Mitomycin* ; Ophthalmology ; Pterygium* ; Surveys and Questionnaires ; Recurrence ; Sclera ; Seoul ; Sudden Infant Death ; Water

BACKGROUND: Although there have been many studies on the risk factors for coronary artery disease, the etiology and risk factor of coronary artery spasm has not yet been determined. The objective of this study was to examine the risk factors for coronary vasospasm through a comparison of patients with angiographically determined vasospastic angina and patients without vasospasm and normal coronary artery. METHODS: Intracoronary injection of acetylcholine in order (20microg, 50microg, 100microg) were administered to all patients (Total 81:34 males, 47 females : mean age 50 years) who had a history of chest pain with normal or near normal coronary arteriographic fingings. After documentation of vasospasm in major epicardial coronary arteries by acetylcholine (Ach)-provocated dcoronary angiography, various risk factors (smoking, hypertension, diabetes, drinking and hyperlipidemia) were compared between patients with vasospasm and patients without vaspasm. RESULTS: 24 patients showed significant luminal narrowing (> or =75%)(Vasospasm group) and 57 patients showed no significant change (Control). Vasospasm group were suffered from typical chest pain in 92% of patients but control complained typical chest pain in 51% of subjects. The sites of vasoconstriction induced by Ach were LAD (11 cases), LCX (4 cases), RCA (11 cases) and vasoconstriction occurred 2 vessels (LAD and LCx) at the same time in two cases. The amount of Ach to provocate vasoconstriction was 20~50microg (90%) and there were no difference between left and right coronary arteries. The ratio of smoker was more frequent in the vasospasm group than control (58.3% vs 30.4%, p=0.046). But total cholesterol, low density lipoprotein, high density lipoprotein, triglycerides, apolipoprotein A, apolipoprotein B, lipoprotein (a), diabetes and body mass index, drinking were not statistically significant between two groups. CONCLUSION: Smoking appears to be a major risk factor for vasospastic angina by endotheilal dysfunction without significant coronary artery narrowing. But other fisk for coronary artery disease may not contribute to coronary vasospasm.
Acetylcholine* ; Angiography ; Apolipoproteins ; Body Mass Index ; Chest Pain ; Cholesterol ; Coronary Artery Disease ; Coronary Vasospasm ; Coronary Vessels* ; Drinking ; Female ; Humans ; Hypertension ; Lipoprotein(a) ; Lipoproteins ; Male ; Phenobarbital ; Risk Factors* ; Smoke ; Smoking ; Spasm* ; Triglycerides ; Vasoconstriction

Synchronous multiple primary neoplasms of the female reproductive tract are rare cases and has ranged from 0.54% to 2.1%. Rare cases of synchronous endometrial cancer and squamous cell carcinoma in situ of the cervix have also been discribed in the literature. Recently, it has been reported that the frequency of multiple primary neoplasms is increasing as a result of the lengthening average lifetime, progress in cancer screening techniques, and improved cancer therapy. We have experienced a case of synchronous endometrial cancer and squamous cell carcinoma in situ of the cervix in Department of Obstetrics and Gynecology and Pathology, College of Medicine Korea University and discribed our case with a brief review of literature.
Carcinoma, Squamous Cell* ; Cervix Uteri* ; Early Detection of Cancer ; Endometrial Neoplasms* ; Female ; Gynecology ; Humans ; Korea ; Neoplasms, Multiple Primary ; Obstetrics ; Pathology

BACKGROUND: A group of patients with chest pain and normal coronary angiograms without spasm of epicardial artery is known to have decreased coronary flow reserve in response to vasodilatory stimuli, but the mechanisms responsible for the impairment of vasodilatory reserve are undefined. The purpose of this study was to determine whether dysfunction of coronary microvascular endothelium contributes to the reduced vasodilatory responses in patients with chest pain and normal coronary angiograms. METHODS: Twenty patients, 12(group A) with and 8(group B) without ST depression on exercise ECG or 24 hours ambulatory ECG. with chest pain and normal coronary angiograms and no spasm of epicardial coronary artery. were studied. As the endothelium-independent vasodilator, acetylcholine at doses of 20microg, 50microg and 100microg, and as the endothelium-independent vasodilator, nitroglycerin 200microg were infused into left coronary artery. The functional response of coronary vasomotion was studied with atrial pacing. By themodilution pacing catheter. great cardiac vein flow(GCVF) was measured. The changes in the diameter of proximal and distal of left anterior descending artery were analyzed. RESULTS: Intracoronary acetylcholine increased GCVF by 12.3% with 20microg(NS),by 38.9% with 50microg(p<0.05) and by 14.8% with 100microg(NS). The changes in GCVF with 20microg and 50microg dose of acetylcholine were positively related with those with atrial pacing(r=0.59 and r=0.62, respectively), but not at dose of 100microg(r=0.12). Thus, patients with diminished flow response with atrial pacing had reduced endothelium-dependent dilation with low dose acetylcholine. Also changes in GCVF with atrial pacing and acetylcholine were smaller in the patients of group A than group B. However, the changes in GCVF to nitroglycerin was not related with the changes with acetylcholine and did not differ between A and B group, indicating this vasodilatory response was not associated with the endothelium-independent vasodilation. Acetylcholine caused similar degree of change in diameter at proximal and distal epicardial artery in two groups and their changes were not related with changed in GCVF with acetylcholine, suggesting the changes in GCVF with acetylcholine were mainly influenced by the changes at the level of microvasculature. CONCLUSION: In patients with chest pain and normal coronary angiograms without spasm of epicardial artery, reduced vasodilatory response with atrial pacing was associated with the impairment of endothelium-dependent dilation at the level of coronary microvasculature, suggesting the endothelial dysfunction of coronary microvessels is one of the causes of inducible myocardial ischemia.
Acetylcholine ; Arteries ; Catheters ; Chest Pain* ; Coronary Vessels ; Depression ; Electrocardiography ; Endothelium ; Humans ; Microvessels* ; Myocardial Ischemia ; Nitroglycerin ; Spasm ; Thorax* ; Vasodilation ; Veins

BACKGROUND: A group of patients with chest pain and normal coronary angiograms without spasm of epicardial artery is known to have decreased coronary flow reserve in response to vasodilatory stimuli, but the mechanisms responsible for the impairment of vasodilatory reserve are undefined. The purpose of this study was to determine whether dysfunction of coronary microvascular endothelium contributes to the reduced vasodilatory responses in patients with chest pain and normal coronary angiograms. METHODS: Twenty patients, 12(group A) with and 8(group B) without ST depression on exercise ECG or 24 hours ambulatory ECG. with chest pain and normal coronary angiograms and no spasm of epicardial coronary artery. were studied. As the endothelium-independent vasodilator, acetylcholine at doses of 20microg, 50microg and 100microg, and as the endothelium-independent vasodilator, nitroglycerin 200microg were infused into left coronary artery. The functional response of coronary vasomotion was studied with atrial pacing. By themodilution pacing catheter. great cardiac vein flow(GCVF) was measured. The changes in the diameter of proximal and distal of left anterior descending artery were analyzed. RESULTS: Intracoronary acetylcholine increased GCVF by 12.3% with 20microg(NS),by 38.9% with 50microg(p<0.05) and by 14.8% with 100microg(NS). The changes in GCVF with 20microg and 50microg dose of acetylcholine were positively related with those with atrial pacing(r=0.59 and r=0.62, respectively), but not at dose of 100microg(r=0.12). Thus, patients with diminished flow response with atrial pacing had reduced endothelium-dependent dilation with low dose acetylcholine. Also changes in GCVF with atrial pacing and acetylcholine were smaller in the patients of group A than group B. However, the changes in GCVF to nitroglycerin was not related with the changes with acetylcholine and did not differ between A and B group, indicating this vasodilatory response was not associated with the endothelium-independent vasodilation. Acetylcholine caused similar degree of change in diameter at proximal and distal epicardial artery in two groups and their changes were not related with changed in GCVF with acetylcholine, suggesting the changes in GCVF with acetylcholine were mainly influenced by the changes at the level of microvasculature. CONCLUSION: In patients with chest pain and normal coronary angiograms without spasm of epicardial artery, reduced vasodilatory response with atrial pacing was associated with the impairment of endothelium-dependent dilation at the level of coronary microvasculature, suggesting the endothelial dysfunction of coronary microvessels is one of the causes of inducible myocardial ischemia.
Acetylcholine ; Arteries ; Catheters ; Chest Pain* ; Coronary Vessels ; Depression ; Electrocardiography ; Endothelium ; Humans ; Microvessels* ; Myocardial Ischemia ; Nitroglycerin ; Spasm ; Thorax* ; Vasodilation ; Veins

Drug-induced hypersensitivity syndrome is a rare, but severe, life-threatening disease with multiorgan failure. Aromatic antiepileptic drugs are frequent causes of this syndrome. The association of the human herpes virus-6 has been recently reported in patients with drug-induced hypersensitivity syndrome. We report two patients who were diagnosed as having antituberculosis drug-induced hypersensitivity syndrome based on clinical course and laboratory data. In addition, human herpes virus-6 DNA was detected by polymerase chain reaction in peripheral blood mononuclear cells and the serum. There was a favorable outcome after discontinuation of the causative drug, plus corticosteroid therapy. After the treatment, human herpes virus-6 DNA was not detected by polymerase chain reaction. This is the first report of antituberculosis drug-induced hypersensitivity syndrome associated with reactivation of human herpes virus-6.
Anticonvulsants ; DNA ; Humans ; Hypersensitivity* ; Polymerase Chain Reaction

OBJECTIVE: The aim of this study was to evaluate the positive rate of squamous cell carcinoma antigen (SCC), carcinoembryonic antigen (CEA), and CA-125 according to clinical stage and histology. We also determine the rate of normalization of SCC after surgical and radiation therapy. RESULTS: In 222 patients with cervical cancer, the pre-treatment positive rate of SCC, CEA, and CA- 125 were 38.7%, 24.3%, and 19.8%, respectively. The positive rate of SCC by clinical stage were 12.9% for stage I, 60.5% for stage II, 88.2% for stage III, and 87.5% for stage IV. The positive rate of CEA by stage were 7.8% for stage I, 36.4% for stage II, 83.3% for stage III, and 75% for stage IV. The positive rate of CA-125 by stage were 5.9% for stage I, 23.3% for stage II, 83.3% for stage III, and 75% for stage IV. The positive rates of SCC, CEA, and CA-125 were significantly increased by clinical stage. According to histology, the positive rate of SCC (39.8%) was more significantly higher than the positive rates of other tumor makers in squamous cell carcinoma of the uterine cervix. The positive rate of CA-125 was higher than the positive rate of other tumor markers in adenocarcinoma and adenosquamous carcinoma of the uterine cervix, but it was not statistically significant difference. CONCLUSION: SCC have been shown to be higher positive rate than any other tumor markers in patients with cervical cancer. The positive rates of SCC, CEA, and CA-125 were significantly increased by clinical stage. Concomitant measurement of SCC, CEA, and CA-125 may be more useful than measurement of SCC alone, and further study was needed.
Adenocarcinoma ; Carcinoembryonic Antigen ; Carcinoma, Adenosquamous ; Carcinoma, Squamous Cell ; Cervix Uteri ; Female ; Humans ; Biomarkers, Tumor* ; Uterine Cervical Neoplasms*