1.Two Cases of Giant Hydronephrosis.
Hwan Sil PARK ; Sio Gyun NHO ; Seung Woo YOU ; Sung Yong KIM
Korean Journal of Urology 1982;23(8):1196-1198
We experienced two cases of giant hydronephrosis which contained 1,800, 1,200 cc of urine. It was caused by renal stone and congenital ureteropelvic junction stricture.
Constriction, Pathologic
;
Hydronephrosis*
2.A Case of Congenital Atlanto-Occipital Fusion: One case report
Jin Hwan AHN ; Myung Chul YOU ; Suck Hyun LEE ; Bong Kun KIM ; Seung Joon AHN
The Journal of the Korean Orthopaedic Association 1977;12(3):535-538
A cases is reported of congenital atlanto-occipital fusion in a 12-years-old girl. The lesion was treated by occipito-cervical arthrodesis by iliac bone grafting with wiring. The congenital atlanto-occipital fusion has not progressed in this 2 years of observation. This is presented with a review of literature.
Arthrodesis
;
Bone Transplantation
;
Female
;
Humans
3.Evaluating the accuracy (trueness and precision) of interim crowns manufactured using digital light processing according to post-curing time: An in vitro study
Beom-Il LEE ; Seung-Gyu YOU ; Seung-Min YOU ; Dong-Yeon KIM ; Ji-Hwan KIM
The Journal of Advanced Prosthodontics 2021;13(2):89-99
PURPOSE:
This study aimed to compare the accuracy (trueness and precision) of interim crowns fabricated using DLP (digital light processing) according to postcuring time. MATERIALS AND METHODS: A virtual stone study die of the upper right first molar was created using a dental laboratory scanner. After designing interim crowns on the virtual study die and saving them as Standard Triangulated Language files, 30 interim crowns were fabricated using a DLP-type 3D printer. Additively manufactured interim crowns were post-cured using three different time conditions-10-minute post-curing interim crown (10-MPCI), 20-minute postcuring interim crown (20-MPCI), and 30-minute post-curing interim crown (30-MPCI) (n = 10 per group). The scan data of the external and intaglio surfaces were overlapped with reference crown data, and trueness was measured using the best-fit alignment method. In the external and intaglio surface groups (n = 45 per group), precision was measured using a combination formula exclusive to scan data (10 C2). Significant differences in accuracy (trueness and precision) data were analyzed using the Kruskal-Wallis H test, and post hoc analysis was performed using the Mann-Whitney U test with Bonferroni correction (α=.05).
RESULTS:
In the 10-MPCI, 20-MPCI, and 30-MPCI groups, there was a statistically significant difference in the accuracy of the external and intaglio surfaces (P <.05). On the external and intaglio surfaces, the root mean square (RMS) values of trueness and precision were the lowest in the 10-MPCI group.
CONCLUSION
Interim crowns with 10-minute post-curing showed high accuracy.
4.Effect of rinsing time on the accuracy of interim crowns fabricated by digital light processing: An in vitro study
Beom-Il LEE ; Seung-Gyu YOU ; Seung-Min YOU ; Seen-Young KANG ; Ji-Hwan KIM
The Journal of Advanced Prosthodontics 2021;13(1):24-35
PURPOSE:
This study was to evaluate the effect of rinsing time on the accuracy of interim crowns fabricated by digital light processing.
MATERIALS AND METHODS:
The maxillary right first molar master die was duplicated using a silicone material, while a study die was produced using epoxy resin. Scans of the epoxy resin die were used in combination with CAD software to design a maxillary right first molar interim crown. Based on this design, 24 interim crowns were fabricated with digital light processing. This study examined the trueness and precision of products that were processed with one of the three different postprocessing rinsing times (1 min, 5 min, and 10 min). Trueness was measured by superimposing reference data with scanned data from external, intaglio, and marginal surfaces. Precision was measured by superimposing the scan data within the group. The trueness and precision data were analyzed using KruskalWallis, nonparametric, and post-hoc tests, and were compared using a MannWhitney U test with Bonferroni correction (α=.05).
RESULTS:
The trueness of the external and intaglio surfaces of crowns varied significantly among the different rinsing times (P=.004, P=.003), but there was no statistically significant difference in terms of trueness measurements of the marginal surfaces (P=.605). In terms of precision, statistically significant differences were found among the external, intaglio, and marginal surfaces (P=.001).
CONCLUSION
Interim crowns rinsed for 10 minutes showed high accuracy.
5.Evaluating the accuracy (trueness and precision) of interim crowns manufactured using digital light processing according to post-curing time: An in vitro study
Beom-Il LEE ; Seung-Gyu YOU ; Seung-Min YOU ; Dong-Yeon KIM ; Ji-Hwan KIM
The Journal of Advanced Prosthodontics 2021;13(2):89-99
PURPOSE:
This study aimed to compare the accuracy (trueness and precision) of interim crowns fabricated using DLP (digital light processing) according to postcuring time. MATERIALS AND METHODS: A virtual stone study die of the upper right first molar was created using a dental laboratory scanner. After designing interim crowns on the virtual study die and saving them as Standard Triangulated Language files, 30 interim crowns were fabricated using a DLP-type 3D printer. Additively manufactured interim crowns were post-cured using three different time conditions-10-minute post-curing interim crown (10-MPCI), 20-minute postcuring interim crown (20-MPCI), and 30-minute post-curing interim crown (30-MPCI) (n = 10 per group). The scan data of the external and intaglio surfaces were overlapped with reference crown data, and trueness was measured using the best-fit alignment method. In the external and intaglio surface groups (n = 45 per group), precision was measured using a combination formula exclusive to scan data (10 C2). Significant differences in accuracy (trueness and precision) data were analyzed using the Kruskal-Wallis H test, and post hoc analysis was performed using the Mann-Whitney U test with Bonferroni correction (α=.05).
RESULTS:
In the 10-MPCI, 20-MPCI, and 30-MPCI groups, there was a statistically significant difference in the accuracy of the external and intaglio surfaces (P <.05). On the external and intaglio surfaces, the root mean square (RMS) values of trueness and precision were the lowest in the 10-MPCI group.
CONCLUSION
Interim crowns with 10-minute post-curing showed high accuracy.
6.Co-culture of mouse 2 - cell embryos.
Hye Kyung PARK ; Gil Woo LEE ; Seung Hwan YOU ; Sang Hun CHA ; Im Soon LEE ; Tae Ho CHO
Korean Journal of Obstetrics and Gynecology 1993;36(7):1491-1495
No abstract available.
Animals
;
Coculture Techniques*
;
Embryonic Structures*
;
Mice*
7.Mobilization of the Urethra in the Surgical Treatment of Hypospadias: Report of a Case.
Hwan Sil PARK ; Sio Gyun NOH ; Seung Woo YOU
Korean Journal of Urology 1983;24(1):158-161
Urethral mobilization is an adjunctive surgical technique for improving the position of the urethral meatus in a hypospadias operation. In our patient with mild degree of hypospadias and chordee the mobilized urethral meatus was placed out onto the glans without constructing a neourethra.
Female
;
Humans
;
Hypospadias*
;
Male
;
Urethra*
9.A case of systemic lupus erythematosus with chylothorax, chronic interstitial cystitis and protein-losing enteropathy.
Kung No LEE ; Young Hwan PARK ; Seung Hwan LEE ; Jae Chun LEE ; Mi Kyoung LIM ; You Sook CHO ; Bin YOU ; Hee Bom MOON
Korean Journal of Medicine 2000;59(5):555-560
Systemic lupus erythematosus(SLE) is the prototypic immune complex disease which involves various organs. Chronic interstitial cystitis and protein-losing enteropathy are uncommon manifestations of SLE and have good response to steroid. Only one case of SLE associated with chronic interstitial cystitis and protein-losing enteropathy has been reported which was resistant to steroid treatment but dramatically responded to cyclophosphamide. We describe a case of a female patient who developed systemic lupus erythematosus associated with chylothorax, interstitial cystitis and protein-losing enteropathy with literature review. This case was initially resistant to steroid but with the addition of cyclophosphamide, chylothorax, chronic interstitial cystitis and protein-losing enteropathy markedly improved. This is the first case of SLE that developed chylothorax as well as chronic interstitial cystitis and protein-losing enteropathy.
Chylothorax*
;
Cyclophosphamide
;
Cystitis, Interstitial*
;
Female
;
Humans
;
Immune Complex Diseases
;
Lupus Erythematosus, Systemic*
;
Protein-Losing Enteropathies*
10.C-met and E-cadherin Expression in Advanced Gastric Cancer.
Seung Tak OH ; Young Don LEE ; You Jin HWANG ; Jae Hwan SUH ; Woon Kee LEE
Journal of the Korean Surgical Society 2005;69(3):210-216
PURPOSE: In the current study, the relation between the clinicopathological parameters and levels of the amplification of the c-met and E-cadherin genes were investigated in patients with an advanced gastric carcinoma. METHODS: The levels of amplification of the c-met and E-cadherin genes in 44 advanced gastric carcinoma patients were retrospectively investigated using RT-PCR. The relationships between the levels of amplification of these genes and the clinicopathological parameters were evaluated using univariate and multivariate analyses. RESULTS: Seventeen (38.6%) and 13 (29.5%) of the 44 advanced gastric carcinoma patients were evaluated as having amplification of the c-met gene and down-regulation of the E-cadherin gene, respectivly. The amplification of c- met gene was significantly correlated with serosal invasion, lymph node metastasis and neural invasion, whereas the down-regulation of the E-cadherin gene was significantly correlated with the diffuse type of gastric carcinoma by Lauren's calssification, and neural invasion. CONCLUSION: The levels of the c-met and E-cadherin gene amplifications may be a powerful aids in evaluating the metastatic potential and prognosis in patients with advanced gastric cancer.
Cadherins*
;
Down-Regulation
;
Humans
;
Lymph Nodes
;
Multivariate Analysis
;
Neoplasm Metastasis
;
Prognosis
;
Retrospective Studies
;
Stomach Neoplasms*