As an optimal quality of the restorations, there should be a least amount of seating discrepancy between the casting and abutment teeth. However, high viscosity of the cementing medium and its resulting thickness ay prevent complete seating of the restoration. The use of die spacing material provides adequate internal relief for the cementing medium. The purpose of this study is to compare the thickness of three commonly used die spacing materials. Materials and Methods : Stone plates were fabricated and divided into 12 sections to be painted with die spacers. Tru-Fit, Whip-Mix and Belle de St. Claire die spacer which are commonly used in dental practice were tested in this study. Each die spacers were painted layer by layer according to the manufacturer's recommendation. The average thickness of each die spacers were measured with light microscope(x100) and compared between them. Results and Conclusions: A silver-colored Tru-Fit die spacer has the lowest value of thickness without statistical significance comparing with a gold-colored Tru-Fit die spacer and a gray layer of Whip-Mix die spacer has the highest value of thickness without any statistical significance comparing with Belle de St. Claire die spacer. Three and four layers of Tru-Fit die spacer and two layers of Whip-Mix and Belle de St. Claire die spacers seem to be in the acceptable range of thickness of 25 to 45micrometer for optimal seating of the restorations. The standard experimental design and method should be further evaluated for more consistent and objective results.
Paint ; Research Design ; Tooth ; Viscosity

No abstract available.
Alcoholics* ; Evoked Potentials, Visual* ; Humans

A 13-year-old male presented a single, elevated, oval, walnut sized, soft mass on the left retroauricular ares which has increased in size since birth, Histopathologic examination revealed a cyst in the subcutaneus area. Cyst wall is lined by normal epiderrnis and cyst cavity contains hairs and keratinous materials.
Adolescent ; Dermoid Cyst* ; Hair ; Humans ; Juglans ; Male ; Parturition

BACKGROUND: Recently, it is substituted automatic sphygmomanometer for mercury sphygmomanometer. But it seems to be insufficient for data of its accuracy. A sample accurate automatic sphygmomanometer could have an important role in the management of hypertension. The aim of this study is to assess the accuracy of the automatic sphygmomanometer that is used common practice and at home. METHODS: We collected 247 patients who visited the department of Famiiy Practice of Taegu medical center from April to August 1996. BP was measured sequentially same arm by standard device(mercury. sphygmomanometer), test device A(A&D TM-2650), test device B(seine SE-2000). We assessed the automatic sphygmomanometer according to the standards set out by the British Hypertension Society(BHS) protocol and the American Association for the Advancement of Medical Instrumentation(AAMI). These data were analysed using pearson' correlation and paired t-test. RESULTS: Test device A was highly correlated to mercury sphygmomanometer in systolic and diastolic BP(r=0.90, r=0.88). Also test device B was highly correlated to that(r=0.90, r=0.87). The mean difference between BP value obtained by the standard device and those obtained by the test device A were 0.59+/-7.66mmHg systole(mean+/-SD) and 3.83+/-6.43mmHg diast.ole, whereas the difference between the former and those obtained by the test device B were 1.70+/-7.99mmHg systole.and 5.58+/-6.38mmHg diastole. Comparing to standard device, there were a signifioant difference except systolic BP of test device A(P<0.05). According to the criteria of the AAMI, the diastolic BP of test device B was not enough and according to the criteria of the BHS, the diastolic BP of both test device were not enough. CONCLUSIONS: Both test device were highly correlated to mercury sphygmomanometer. But according to the criteria of the BHS and AAMI, there were not enough. Because the use of automatic sphygmomanometer was popularized, I think that further study will be required to assess of accuracy.
Arm ; Blood Pressure* ; Daegu ; Diastole ; Humans ; Hypertension ; Sphygmomanometers*

No abstract available.

Clear cell hidradenoma, generally as an eccrine sweat gland origin, is a fairly uncommon tumor and occurs as a slowly growing, usually solitary nodule. The histological patterns vary from one tumor to another and in different parts of the same tumor. We experienced three cases of clear cell hidradenoma which were diagnosed by the histopathologic examination of the tumor mass removed by surgical excision. Clinical and histopathologic features of each case were reviewed and compared.
Acrospiroma* ; Sweat Glands

No abstract available.
Carcinoma, Renal Cell*

No abstract available.
Carcinoma, Renal Cell*

Reiters syndrome is classically described as the triad of urethritis, coijuctivitis, and arthritis along with the skin manifestation. of keratodermia blenorrhagica, circinate b lanitis and oral ulcetation. Since arthritis is now recognized as the only consistent component, iricr nplete forms consisting of characteristic arthritis associeited with one or more of these features and of dysentery are common, We reported a 48-year-old male who presented with a 3 years histor of significant arthralgia and psoriasiforrn skin involvemeni. He had neither an episode of dysentery not, history of sexual exposure before the onset of symptomes. Showed a correlation with the HLAB 7 tialotype. C-reactive protein levels were significantly elevated. He was treared with corticosteroid, pcycline, methotrexate and indomethacin for about 3 months resulting favorable improvement.
Arthralgia ; Arthritis ; C-Reactive Protein ; Dysentery ; HLA-B27 Antigen ; Humans ; Indomethacin ; Male ; Methotrexate ; Middle Aged ; Skin ; Skin Manifestations ; Urethritis

PURPOSE: This study was designed to evaluate the usefulness of a technetium-99m mercaptoacetyltriglycine (Tc-99m MAG3) single photon emission computed tomography (SPECT) performed on transplanted kidney. MATERIALS AND METHODS: Thirty renal transplant patients were included in this study. Planar scan was performed for 30 minutes using 555 MBq Tc-99m MAG3. A post-voiding SPECT scan was acquired on the third, seventh, fourteenth and twenty eighth day after transplantation. RESULTS: SPECT scan showed interpretable image quality in 26 of 30 patients (86.7%) and 84 in 120 scans (70%). Fourteen of 26 patients with interpretable SPECT image showed decreased or increased radioactivity, but only 5 had abnormal findings on the planar scan. Focal SPECT defects were seen in allografts with normal function (n=3), acute tubular necrosis (n=3), and acute rejection (n=2). The defects are thought to reflect focally underperfused renal parenchyme or, in normal allografts, an artifact from uneven radioactivity distribution. Four of 10 patients with renal arterial variation showed focally decreased radioactivity and SPECT helped guide further studies that confirmed the exact cause. Five of 10 patients with acute tubular necrosis or acute rejection showed focally decreased radioactivity, but its relation to the patients' clinical course was not clear. Focally increased radioactivity was observed in 5 allografts with normal function and 1 with double ureter in which local clearance delay was observed. CONCLUSION: Tc-99m MAG3 SPECT renal scan can detect additional focal abnormalities compared to planar scan. Further study is necessary to elucidate the exact clinical significance of the SPECT findings.
Allografts ; Artifacts ; Humans ; Kidney* ; Necrosis ; Radioactivity ; Tomography, Emission-Computed, Single-Photon* ; Ureter