No abstract available.
Intestinal Obstruction*

All-ceramic restorations have become an attractive alternative to porcelain-fused-to-metal crowns. In-Ceram, and more recently IPS Empress 2 were introduced as a new all-ceramic system for single crowns and 3-unit fixed partial dentures. But their strength and marginal fit are still an important issue. This study evaluated the fracture resistance and marginal fit of three systems of 3 unit all-ceramic bridge fabricated on prepared maxillary anterior resin teeth in vitro. The 3 all-ceramic bridge systems were: (1) a glass-infiltrated, sintered alumina system (In-Ceram) fabricated conventionally, (2) the same system with copy-milled alumina cores (copy-milled In-Ceram), (3) a heat pressed, lithium disilicate reinforced glass-ceramic system (IPS Empress 2). Ten bridges of each system with standardized design of framework were fabricated. All specimens of each system were compressed at 55degree at the palatal surface of pontic until catastrophic fracture occurred. Another seven bridges of each system were fabricated with standard method. All of the bridge-die complexes were embedded in epoxy resin and sectioned buccolingually and mesiodistally. The absolute marginal discrepancy was measured with stereomicroscope at x50 power. The following results were obtained: 1. There was no significant difference in the fracture strength among the 3 systems studied. 2. The Weibull modulus of copy-milled In-Ceram was higher than that of In-Ceram and IPS Empress 2 bridges. 3. Copy-milled In-Ceram (112micrometer) exhibited significantly greater marginal discrepancy than In-Ceram (97micrometer), and IPS Empress 2 (94micrometer at P=0.05. 4. The lingual surfaces of the ceramic crowns showed smaller marginal discrepancies than mesial and distal points. There was no significant difference between teeth (incisor, canine) at P=0.05. 5. All-ceramic bridges of three systems appeared to exhibit sufficient initial strength and acceptable marginal fit values to allow clinical application.
Aluminum Oxide ; Ceramics ; Crowns ; Denture, Partial, Fixed ; Hot Temperature ; Lithium ; Tooth

For evaluation of the response and toxicity of the combination chemotherapy, forty six patients with malignant ovarian tumors who had prior surgery were treated with combination chemotherapy from January 1985 to March 1991 at the Department of Obstetrics and Gynecology, Kyung-pook National University Hospital. The results were as follows : 1. The responses were in complete 20 cases(43.5%), in partial 9 cases(19,6%), in stable 6 cases(13.0%), in progressive 11 cases(23.9%) among 46 patients. 2. By the response rates of various combination chemotherapy regimens, the response rate of CAP was 64%(16/25), CP 57.1%(8/14), VAC 100%(3/3), VBP 50%(1/2), FAM 0%(0/1), and Melphalan 100%(1/1) respectively. 3. As the chemotoxicities of combination chemotherapy, leukopenia 20 cases(46.5%), thrombocytopenia 2 cases(4.7%), anemia 20 cases(46.5%), nephrotoxity 6 cases(14.6%), hepatotoxicity 7 cases(18.4%) were observed.
Anemia ; Drug Therapy* ; Drug Therapy, Combination ; Gynecology ; Humans ; Leukopenia ; Melphalan ; Obstetrics ; Thrombocytopenia

Thelper (Th) cells play a pivotal role in the regulation of immune responses. Since Th epitopes in adenovirus have not yet been defined, in this study, it was attempted to search for Th epitopes of adenovirus antigens that are restricted by MHC class II (H-2E). Among candidate viral proteins to be screened for Th epitopes, structural protein was selected, since they induced strong IL-2 release from adenovirus immune lyrnph node (LN) cells and the presence of E1 protein, which contains immunodominant cytotoxic T lymphocyte epitopes, did not potentiate the T cell responses. To confirm the presence of Th epitopes in the structural protein, virions were trypsinized and the resulting polypeptides whose molecular weights were lower than 5,000 were fractionated by HPLC. Some of the HPLC fraction turned out to induce LN cell proliferation. Ten synthetic peptides were designed as candidate Th epitopes from the primary amino acid sequences of adenovirus hexon and penton protein which are major constituents of the virion. The selected sequences share the common features of other known H-2E' binding ligands. Among these ten synthetic peptides, peptide of hexon protein amino acid residue 709-721 induced noticeable proliferation of LN cells from preimmune mice, and also able to induce IL-2 secretion from adenovirus-specific T hybridomas, suggesting that the peptide was the most immunodominant Th epitope. Hexon protein 221-233 and hexon protein 676-688 are considered as epitopes also. This study revealed three epitope sequences from adenovirus structural protein that are presented by class II MHC, H-2E.
Adenoviridae* ; Amino Acid Sequence ; Animals ; Cell Proliferation ; Chromatography, High Pressure Liquid ; Epitopes ; Epitopes, T-Lymphocyte* ; Hybridomas ; Interleukin-2 ; Ligands ; Mice ; Molecular Weight ; Peptides ; Trypsin ; Viral Proteins ; Virion

No abstract available.
Meningioma* ; Optic Nerve* ; Orbit*

No abstract available.
Peritoneal Dialysis, Continuous Ambulatory* ; Peritonitis, Tuberculous*

PURPOSE: Long-term follow-up results of concurrent bilateral or unilateral cementless hip arthroplasty were compared. MATERIALS AND METHODS: Forty eight and 49 patients with concurrent bilateral and unilateral hip artrhoplasties who had more than a 17-year follow-up time were selected. At final follow-up, mean ages were 69.1 and 66.7 years old in the bilateral and unilateral groups, respectively. Mean follow-up times were 21.5 and 22.4 years in the bilateral and unilateral groups, respectively. Clinical results were attained using Harris hip score and standardized anteroposterior and lateral view X-rays. RESULTS: The bilateral group had mean Harris scores of 44.3(standard deviation 3.78) preoperatively, and 81.2 (10.75) at final follow-up. For the unilateral group, the mean scores were 46.5(3.27) preoperatively, and 80.1 (12.05) at final follow-up. At final follow-up, an acetabular cup was securely located in 78.9% and 82.8% of the bilateral and unilateral groups, respectively, and all cases showed firm fixation of the femoral stem in both groups. Osteolysis around the cup and stem were found in 26.3% and 31.4% of the bilateral group and 16.6% and 17.1% of the unilateral group, respectively. Polyethylene wear rate was 0.17 mm/yr and 0.16 mm/yr in the unilateral and bilateral groups, respectively. Using the Kaplan-Meier method, 17-year survival rates for cup and stem were 78% and 89% in the bilateral group, respectively, and 78% and 86% in the unilateral group, respectively. CONCLUSION: In 17-year long-term follow-up, concurrent bilateral hip arthroplasty was insignificantly different clinically and radiologically from the result of unilateral hip arthroplasty.
Arthroplasty ; Follow-Up Studies ; Hip ; Humans ; Osteolysis ; Polyethylene ; Survival Rate

No abstract available.
Pregnancy* ; Uterine Hemorrhage*

Phylloides tumor is very similar to giant fibroadenoma in that they have benign appearance in breast radiologic image. Fibroadenoma has no malignant potential, but phylloides tumor is locally recurrent, invasive and may occasionally metastasize. It thus appears that evaluation of the differential point of the two tumor groups by radiologic study is very important. We retrospectively compared sonographic find;.ngs of 6 cases of phylloides tumor with those of 4 cases of fibroadenoma, which proved pathologically in Ye mgnam University Hospital from 1984 to 1986. The mean age of the patients were 31.8 years old(from 14 to 41 years old) in phylloides tumor and 28.8 years old (from 17 to 40 years old) in giant fibroadenoma, respectively. The viewpoints of this analysis were size, shape and contour of the masses, internal echo pattern, posterior enhancement, and especially the existence of peripheral cyst or septal band echo. We found that diffenentiation of these two tumors by sonography was difficult. But peripheral cyst was found only in phylloides tumor and septal band echo was found largely in giant fibroadenoma. Although the existence of peripheral cyst or septal band echo in the breast mass was not pathognomonic findings, we suggest that the existence of septal band echo is preferential finding to fibroadenoma, and peripheral cyst is preferential finding to phylloides tumor.
Breast ; Diagnosis, Differential* ; Fibroadenoma* ; Humans ; Retrospective Studies ; Ultrasonography

To validate the diagnostic significance of red cell indices in non-anemic iron deficiency and iron deficiency anemia, complete blood count, serum iron, total iron binding capacity, and serum ferritin were measured in 208 middle school girls between 13 and 15 years of age. We used Reciever Operatin Characteristic (ROC) curve to compare the diagnostic significances of various red cell indices (MCV, MCH, MCHC, RDW). We also established the ideal cutoff values of red cell indices for the diagnosis of iron deficiency anemia. The results were as follows: 1) The prevalence of iron deficiency anemia and non-anemic iron deficiency were 4.8% and 11.1% respectively. 2) For the diagnosis of iron deficiency anemia, MCV had the highest diagnostic capacity, and MCH was the secondly useful one. 3) For the diagnosis of non-anemic iron deficiency. MCV had the highest diagnostic capacity, but the sensitivity and specificity of the 4 red cell indices(MCV, MCH, MCHC, RDW) were so low that they could not be used as screening or confirmative tests. 4) The sensitivity and specificity of MCV were 1 for the diagnosis of iron deficiency anemia(cutoff value: MCV=79 fl). In case of MCH, the sensitivity was. 1 and the specificity was 0.995 for the diagnosis of iron deficiency anemia(cutoff value: MCH=25pg). In case of MCHC, the sensitivity was 1 and the specificity was 0.69 for the diagnosis of iron deficiency anemia (cutoff value: MCH-33g/dl). In case of RDW, the sencitivity was 0.9 and the specificity was 0.96 for the diagnosis of iron deficiency anemia(cutoff value: RDW=13.5%). With above results, we could conclude that MCV and MCH were very useful screening tests for iron deficiency anemia and MCV could be used as a confirmative test of iron deficiency anemin.
Anemia, Iron-Deficiency* ; Blood Cell Count ; Diagnosis ; Erythrocyte Indices* ; Female ; Ferritins ; Humans ; Iron* ; Mass Screening ; Prevalence ; ROC Curve* ; Sensitivity and Specificity