No abstract available.
Nose* ; Stents*

STATEMENT OF PROBLEM: Zirconia-based restorations have the common technical complication of delamination, or porcelain chipping, from the zirconia core. Thus the shear bond strength between the zirconia core and the veneering porcelain requires investigation in order to facilitate the material's clinical use. PURPOSE: The purpose of this study was to evaluate the bonding strength of the porcelain veneer to the zirconia core and to other various metal alloys (high noble metal alloy and base metal alloy). MATERIAL AND METHODS: 15 rectangular (4x4x9mm) specimens each of zirconia (Cercon), base metal alloy (Tillite), high noble metal alloy (Degudent H) were fabricated for the shear bond strength test. The veneering porcelain recommended by the manufacturer for each type of material was fired to the core in thickness of 3mm. After firing, the specimens were embedded in the PTFE mold, placed on a mounting jig, and subjected to shear force in a universal testing machine. Load was applied at a crosshead speed of 0.5mm/min until fracture. The average shear strength (MPa) was analyzed with the one-way ANOVA and the Tukey's test (alpha= .05). The fractured specimens were examined using SEM and EDX to determine the failure pattern. RESULTS: The mean shear strength (+/- SD) in MPa was 25.43 (+/- 3.12) in the zirconia group, 35.87 (+/- 4.23) in the base metal group, 38.00 (+/- 5.23) in the high noble metal group. The ANOVA showed a significant difference among groups, and the Tukey's test presented a significant difference between the zirconia group and the metal group. Microscopic examination showed that the failure primarily occurred near the interface with the residual veneering porcelain remaining on the core. CONCLUSION: There was a significant difference between the metal ceramic and zirconia ceramic group in shear bond strength. There was no significant difference between the base metal alloy and the high noble metal alloy.
Ceramics ; Collodion ; Dental Porcelain ; Fires ; Fungi ; Polytetrafluoroethylene ; Shear Strength ; Zirconium

There was no definitive reported cases of urinary calculi. This study is to estate the value of urinary calcium, magnesium, uric acid and magnesium/calcium ratio in cases of urinary calculi. The amount of calcium, uric acid and magnesium in 24 hour urinary excretion was measured by OCPC, Uricase and titan yellow method in 56 cases of upper urinary calculi compared with 35 control group.The results were summerized as follows.l. The mean values of 24 hour urinary excretion of calcium were 193+/-26mg/day in stone formers and 15l+/-25mg/day in control group. The 24 hour urinary excretion of calcium in the stone formers were significantly higher than those of the control group. 2. The mean values of 24 hour urinary excretion of uric acid were 498+/-40mg/day in the stone formers and 371+/-6mg/day in the control group. The 24 hour urinary excretion of uric acid in the stone formers were significantly higher than those of the control group. 3. Urinary magnesium values have not been shown any significant differences between the group with urinary calculi and those of control group. 4. The mean values of 24 hour urine of magnesium to calcium ratio was 1.01+/-0.95 in stone formers and l.42+/-1.31 in the control group. The magnesium to calcium ratio in the stone formers were significantly lower than those of the control group. These results suggest that increased urinary calcium and uric acid level may play some role in the genesis of urinary stone but urinary magnesium value was not different in the two groups. We think that a decrease in the urinary magnesium to calcium ratio was the results of increased excretion of calcium rather than lowered excretion of the magnesium for the stone formers.
Calcium* ; Magnesium* ; Saturn ; Urate Oxidase ; Uric Acid* ; Urinary Calculi* ; Urolithiasis

A clinical observation was made on the case of pediatric urological disease who had been admitted to the Department of Urology, Korea University Hospital during the period of 8 years and one month from September 1, 1972 to September 30, 1980. 1) Of 1977 cases hospitalized in the GU Dept., 229 cases were pediatric urological patient giving a rare of 11.5% and the ratio between male and female was 5.8:1. 2) The most commonly involved organ was, scrotal contents (31. 6%). Urethral diseases were 23. 6%, penile diseases 13.6%, and renal diseases 12.4%. 3) The most common diseases were genito-urinary anomalies (62. 8%). The injuries of G-U tract were 22%, nonspecific infections 7.6%, V-U reflux 4.8%, urinary lithiasis 4%. 4) The most common symptom and sign were absence of scrotal contents in 48 cases. Abnormal position of urethral meatus was seen in 36 case, Scrotal swelling in 23 cases, curved penile shaft in 16 cases, flank pain in 15 cases. 5) Operation was performed in 176 cases (76. 9%). 6) Orchiopexy was performed in 43 cases (24. 4%), circumcision in 42 cases (23. 9%), urerhroplasty in 16 cases (9.1 %), hydrocelectomy in 41 cases (8%), chordectomy in 13 cases (24 %).
Circumcision, Male ; Female ; Flank Pain ; Humans ; Korea ; Male ; Orchiopexy ; Penile Diseases ; Urethral Diseases ; Urolithiasis ; Urologic Diseases ; Urology*

Xanthogranulomatous pyelonephritis is an atypical form of severe renal parenchymal infection, characterized by yellow lobulated masses macroscopically and massive inflammatory cell, foamy histiocyte microscopically. Preoperative diagnosis confused with hypernephroma, pyonephrosis with stone, other renal inflammatory disease. We report two cases of xanthogranulomatous pyelonephritis, diagnosed by microscopical finding and literature has been reviewed briefly.
Carcinoma, Renal Cell ; Diagnosis ; Histiocytes ; Pyelonephritis, Xanthogranulomatous* ; Pyonephrosis

Inverted papilloma of the urinary tract is a unique and rare tumor. It is generally considered a benign lesion, although previous reports have alluded to the possibility of malignant change. The lesion is believed to arise mainly from trigon and bladder outlet as a result of chronic. proliferative cystitis. The most commonly associated clinical symptoms are hematuria and those of urinary obstruction. We report two cases of vesical inverted papilloma which were proved histologically.
Cystitis ; Hematuria ; Papilloma, Inverted* ; Urinary Bladder* ; Urinary Tract

A 44-year-old female patient was admitted to Korea University Hospital with a history of frequency, pain and headache after urination for 2 years. The past history was not remarkable and she never had trouble with hypertension, Urinalysis revealed microscopic hematuria and urinary VMA level was 9.33mg it 24 hour urine Cystoscopy showed the presence of ovoid tumor mass measuring approximately 4cm in greatest diameter. A biopsy specimen, obtained by TUR showed histological evidence of pheochromocytoma. She underwent segmenal resection of bladder at the 14th day of admission and the postoperative course was uneventful.
Adult ; Biopsy ; Cystoscopy ; Female ; Headache ; Hematuria ; Humans ; Hypertension ; Korea ; Pheochromocytoma* ; Urinalysis ; Urinary Bladder* ; Urination

Recently, we found an ectopic paragoniums westermani in the scrotum from 19 years old male patient who admitted our hospital under the impression of scrotal mass. We report this case, and literatures were reviewed briefly.
Humans ; Male ; Paragonimiasis* ; Scrotum ; Young Adult

To evaluate the degree and development of complication of renal trauma multiple studies my be necessary, including urography, sonography, CT scan and renal scan. We appreciated the usefulness and outcome of sonography in evaluation of renal trauma through the experiences of its applications to 5 renal trauma patients. Our experiences demonstrate follows : 1. In all 5 patients, sonography detected the presence and change of perirenal hematoma and cortical laceration successfully. 2. In one patient who developed into non-functioning kidney, sonography played little one. 3. Sonography seemed to be a relatively reliable modality of guidance in follow-up of major and minor renal trauma patients who were going to manage conservatively.
Follow-Up Studies* ; Hematoma ; Humans ; Kidney ; Lacerations ; Tomography, X-Ray Computed ; Ultrasonography ; Urography

Digital mucous cysts encompass two pathogenetically distinct entities, the cutaneous myxomatous type and ganglion type. We describe an 8-year-old boy with a digital mucous cyst on the ventral side of the proximal phalanx of the right fifth finger. The case shows characteristic histopathological findings, but in an unusual location.
Child ; Fingers ; Ganglion Cysts ; Humans ; Male