This study was investigated to compare the staining resistance of soft denture liners. Specimens wee made of Coe-soft. Coe-Comfort, Soft-liner, Visco-gel, and were stored in 1% methyleneblue solution for 24 hours. The amounts of color change before and after treatment with mono-poly and thermocycling were measured by colorimeter(TC-6FX, Tokyo Denshoku Co. Ltd, Japan) for evaluation of staining resistance. The following conclusions were drawn from this study. 1. The staining resistance of Visco-gel was increased, but there was no changer of staining resistance in Coe-soft, Coe-comfort, and Soft-liner after treatment with monopoly. 2. The staining resistance of the Coe-comfort was the least in all soft denture liners. 3. The staining resistance of Visco-gel and Soft-liner were decreased after thermocycling.
Denture Liners* ; Dentures*

No abstract available.
Legg-Calve-Perthes Disease*

Aortic transection or interruption is a rare condition which developed after an acute deceleration injury. Its occurrence depends on the location and direction of the force applied and is usually from motor vehicle accident or falling down. The exact incidence of aortic transection in trauma is not known but, when develops, only about 10-15% of the victims can furtive and be transported to the hospital. Even in the survivors, majority of them will be fatal within a few days if a prompt diagnosis and surgical treatments are not made. Aggressive diagnostic work-up is recommended for the patients with high suspicious index, which would salvage the victims with this fatal condition. We report the experience of two cases of aortic transection or interruption following motor vehicle accidents.
Deceleration ; Diagnosis ; Early Diagnosis* ; Humans ; Incidence ; Motor Vehicles ; Survivors ; Thorax* ; Wounds and Injuries*

BACKGROUND: Brief episode of coronary artery occlusion (i.e., ischemic preconditioning) makes the heart more resistant to injury from a subsequent ischemic insult. Although a great deal of effort has been made in studying ischemic preconditioning, the underlying mechanism of ischemic preconditioning and its effect on hypothermic insult has not been elucidated. This study was performed to see whether ischemic preconditioning protects against the depression of cardiac contractility induced by hypothermic cardioplegic arrest/reperfusion. And recently, adenosine was known to have some correlation with the mechanism of preconditioning. If so, does this effect remain after the blockade of adenosine receptor by 8-phenyl theophylline? METHOD: Twenty-four Sprague-Dawley rat weighed 250-350g were used and divided into three groups. Rat hearts were removed rapidly, and each isolated heart paced with a rate of 180/min was perused by modified Krebs-Hensleit buffer(KHB) solution on a Langendorff apparatus far an hour. After obtaining baseline data including left ventricular pressure(LVP), dp/dt, and coronary flow, cardiac arrest was induced by perfusion of 0degrees C crystalloid cardioplegic(St Thomas) solution. After that, all hearts were stored in the same St Thomas solution at salute temperature far 2 hours. In group I (control group), the hear was reperfused by KHB solution. In group II(preconditioning group), the heart was subjected to two 2-minute episode of global ischemia followed by 5 minute reperfusion with KHB solution(preconditioning) before cardiac arrest. In group III(phenyl theophylline group), the heart was subjected to preconditioning procedure and 8-phenyl theophylline at 10muM in concentration was added to KHB solution at time of reperfusion. Observing parameter was obtained in each group at 10, 20, 40 and 60 minutes after starting reperfusion and compared statistically by use of one way ANOVA test(STASTICA, release 4.5). P-value less than 0.05 was considered significant. RESULTS: Although depressed LVP, dp/dt, and Coronary flow were seen in all groups during the reperfusion period, the preconditioned group showed more effective recovery of LVP than that of the control group, especially at 10, 20 and 40 minutes(p<.05). We failed to demonstrate the difference between the phenyl theophylline group and the control group(p=NS). CONCLUSION: These results suggest that ischemic preconditioning has protective effect on recovery state of hypothermic cardioplegic arrest/reperfusion. Its protective effect was limited during early reperfusion stage and was blocked by adenosine blocker.
Adenosine ; Animals ; Coronary Vessels ; Depression ; Heart Arrest ; Heart* ; Ischemia ; Ischemic Preconditioning* ; Myocardium* ; Perfusion ; Rats ; Rats, Sprague-Dawley ; Receptors, Purinergic P1 ; Reperfusion ; Theophylline

This study was performed to investigate the effects of impression method and design of the retainer on the stress of abutment tooth in distal extension RPD. Three different types of direct retainer such as Akers clasp. RPI clasp, and wrought wire clasp were designed . Stress on the abutment tooth was measured and analyzed with strain gauge method. Impressions were anatomic impression technique and functional impression technique. The following conclusions were drawn from this syudy. 1.The stress at the abutment tooth on all RPD was decreased in functional impression except RPI clasp retained RPD. 2.The stress at the abutment tooth on RPI clasp retained RPD was the most smallest in anatomic impression 3.While load is increase the stress at the abutment tooth was increased, but the change of stress at the buccal side of abutment tooth was not too much in functional impression.
Denture, Partial, Removable* ; Tooth

No abstract available.
Fingers*

We evaluated the availability of toluidine blue stain in body fluids, such as peritoneal and pleural fluid and urine. Nine hundreds specimens, i.e., 400 pleural and 400 peritoneal fluids and 100 urine samples, respectively, from Jan. 1995 to May 1996 were included. We obtained the result of high sensitivity and high specificity in toluidine blue stained body fluid in comparison with Papanicolaou stained result. Additionally, we found the diagnostically important crystals in chylothorax and some urine samples, which can not be seen in routine Papanicolaou stain. We thought the toluidine blue stain in body fluid is one of very useful diagnostic methods.
Ascitic Fluid ; Body Fluids ; Chylothorax ; Proteinuria* ; Sensitivity and Specificity ; Tolonium Chloride

During January 1975 to December 1979, myelographic studies followed by operation was carried out on 150 cases of lumbar H.I.V.D. at Chung Nam National University Hospital. As to the myelographic findings, mode, level of indentation, and positive and negative finding were analyzed in comparison with operative findings. The followings results were obtained: 1. Plain radiography has a Iittle value In diagnosis of Iumbar H.I.V.D. about one third of 150 cases show significant sign in plain film study. 2. The major discrepancies between myelographic and operative findings were found in 11.3%, while the minor discrepancies were 4%, so giving an accuracy of 84.7%. 3. Positive myelographic finding(120 cases) consisted of smooth round defect in 83 cases (48.8%), unilateral wedge defect In 45 cases (26.4%), block defect In 18 cases (10.5%), bilateral wedge defect in 13 cases (7.6%), and hourglassdefect In 11 cases (6.4%), respectively. 4. Operative findings revealed the protruded disc: 74.5%, bulging: 11.1%, extruded: 22%, and mlgrated: 1.7%. 5. The myelographic finding of bulging type disc usually showed smooth round filling defect and those of protruded were smooth round filling defect, wedge shape and block filling defect, while the extruded type revealed smooth round filling defect In the most cases. 6. The myelography can be a valuable aid in the determination of the level and degree of H.I.V.D. and very helpful ln differential diagnosis.
Diagnosis ; Diagnosis, Differential ; Myelography ; Radiography

The appendiceal tuberculosis is a rare from of skeletal tuberculosis in child and adults, arising from a focus or foci in posterior compartment of spine. This from may be unilateral and may be isolated or present at multiple levels, characterieed by slight change of the disk space and deformity, but large psravertebral abscess are invariable. Extradural extension may lead to the development of paraplegia. We had experienced one case of appendiceal tuberculosis at L1 and treated with antituberculosis medication and radical curettage, followed with body jacket cast.
Abscess ; Adult ; Child ; Congenital Abnormalities ; Curettage ; Humans ; Paraplegia ; Spine ; Tuberculosis

The intraosseous ganglion is a rare cystic lesion of bone most frequently located in the subchondral epiphysis of long bones with or without direct communication with a joint cavity. This case is reported to call attention to this lesion which deserves consideration in the differential diagnosis of solitary cystic lesions of bone. We were reported a 59-aged woman without direct communication with the knee joint and osteoarthritis which was treated with the curettage and chip-bone graft.
Bone Cysts ; Curettage ; Diagnosis, Differential ; Epiphyses ; Female ; Humans ; Joints ; Knee Joint ; Osteoarthritis ; Tibia ; Transplants