The purpose of this study was to evaluate the effect of salivary contamination of teeth on bonding efficacy of self-priming and self-etching DBSs. The materials used were Single Bond(SB, self-priming system, 3M), Unifil Bond(UB, self-etching system, GC), and Scotchbond Multi-Purpose Plus(SM, 3M) as control. Forty five human molars randomly allocated to three groups as dentin bonding systems tested and embedded in epoxy resin. Then the specimens were wet-ground to expose flat buccal enamel surface or flat occlusal dentin surface and cut bucco-lingually to form two halves with slow speed diamond saw. One of them was used under non-contamination, other under contamination with saliva. The bonding procedure was according to the manufacturer's directions and resin composite(Z-100, 3M Dental Products, St. Paul, MN) was built-up on the bonded surface 5mm high. The specimens were ground carefully at the enamel-composite interface with fine finishing round diamond bur to create an hour-glass shape yielding bonded surface areas of 1.5+/-0.1mm2. The specimens were bonded to the modified microtensile testing apparatus with cyanoacrylate, attached to the universal testing machine and stressed in tension at a CHS of 1mm/min.. The tensile force at failure was recorded and converted to a tensile stress(MPa). Mean values and standard deviations of the bond strength are listed in table. One-way ANOVA was used to determine significant difference at the 95% level. The bond strength of SBMP and SB were not affected by salivary contamination, but that of UB was significantly affected by salivary contamination. These results indicate that DBSs with total etch technique seems less likely affected by salivary contamination in bonding procedure.
Adhesives ; Cyanoacrylates ; Dental Enamel ; Dental Instruments ; Dentin* ; Diamond ; Humans ; Molar ; Saliva ; Tooth*

No abstract available.

Retrocaval ureter is a congenital venous anomaly, in which the ureter passes behind and is compassed by inferior vena cava. We experienced a case of multiple urothelial cell carcinoma in retrocaval ureter in 68 years old male. He was treated with transurethral resection of bladder tumor and right nephroureterectomy with bladder cuff excision.
Aged ; Carcinoma, Transitional Cell ; Humans ; Male ; Retrocaval Ureter* ; Ureter ; Urinary Bladder ; Urinary Bladder Neoplasms ; Vena Cava, Inferior

The fracture toughness test is believed as a clinically relevant method for assessing the fracture resistance of the dentinal restoratives. The objectives of this study were to measure the fracture toughness (K1C) and microtensile bond strength of dentin-resin composite interface and compare their relationship for their use in evaluation of the integrity of the dentin-resin bond. A minimum of six short-rod specimens for fracture toughness test and fifteen specimens for microtensile bond strength test was fabricated for each group of materials used. After all specimens storing for 24 hours in distilled water at 37degrees C, they were tensile-loaded with an EZ tester universal testing machin. Statistical analysis was performed using ANOVA and Tukey's test at the 95% confidence level, Pearson's coefficient was used to verify the correlation between the mean of fracture toughness and microtensile bond strength. FE-SEM was employed on fractured surface to describe the crack propagation. Fracture toughness value of Clearfil SE Bond (SE) was the highest, followed by Adper Single Bond 2 (SB), OptiBond Solo (OB), ONE-STEP PLUS (OS), ScotchBond Multi-purpose (SM) and there was significant difference between SE and other 4 groups (p < 0.05). There were, however, no significant difference among SB, OB, OS, SM (p > 0.05). Microtensile bond strength of SE was the highest, followed by SB, OB, SM, OS and OS only showed significant lower value (p < 0.05). There was no correlation between fracture toughness and microtensile bond strength values. FE-SEM examination revealed that dentin bonding agent showed different film thickness and different failure pattern according to the film thickness. From the limited results of this study, it was noted that there was statistically no correlation between K1C and microTBS. We can conclude that for obtaining the reliability of bond strength test of dentin bonding agent, we must pay more attention to the test procedure and its profound scrutiny.
Dentin ; Water

The fracture toughness test is believed as a clinically relevant method for assessing the fracture resistance of the dentinal restoratives. The objectives of this study were to measure the fracture toughness (K1C) and microtensile bond strength of dentin-resin composite interface and compare their relationship for their use in evaluation of the integrity of the dentin-resin bond. A minimum of six short-rod specimens for fracture toughness test and fifteen specimens for microtensile bond strength test was fabricated for each group of materials used. After all specimens storing for 24 hours in distilled water at 37degrees C, they were tensile-loaded with an EZ tester universal testing machin. Statistical analysis was performed using ANOVA and Tukey's test at the 95% confidence level, Pearson's coefficient was used to verify the correlation between the mean of fracture toughness and microtensile bond strength. FE-SEM was employed on fractured surface to describe the crack propagation. Fracture toughness value of Clearfil SE Bond (SE) was the highest, followed by Adper Single Bond 2 (SB), OptiBond Solo (OB), ONE-STEP PLUS (OS), ScotchBond Multi-purpose (SM) and there was significant difference between SE and other 4 groups (p < 0.05). There were, however, no significant difference among SB, OB, OS, SM (p > 0.05). Microtensile bond strength of SE was the highest, followed by SB, OB, SM, OS and OS only showed significant lower value (p < 0.05). There was no correlation between fracture toughness and microtensile bond strength values. FE-SEM examination revealed that dentin bonding agent showed different film thickness and different failure pattern according to the film thickness. From the limited results of this study, it was noted that there was statistically no correlation between K1C and microTBS. We can conclude that for obtaining the reliability of bond strength test of dentin bonding agent, we must pay more attention to the test procedure and its profound scrutiny.
Dentin ; Water

BACKGROUND/AIMS: This study was undertaken to perform a cross-cultural adaptation of the Behcet's Disease Current Activity Form (BDCAF, version 2006) questionnaire to the Korean language and to evaluate its reliability and validity in a population of Korean patients with Behcet's disease (BD). METHODS: A cross-cultural study was conducted among patients with BD who attended our rheumatology clinic between November 2012 and March 2013. There were 11 males and 35 females in the group. The mean age of the participants was 48.5 years and the mean disease duration was 6.4 years. The first BDCAF questionnaire was completed on arrival and the second assessment was performed 20 minutes later by a different physician. The test-retest reliability was analyzed by computing kappa statistics. Kappa scores of > 0.6 indicated a good agreement. To assess the validity, we compared the total BDCAF score with the patient's/clinician's perception of disease activity and the Korean version of the Behcet's Disease Quality of Life (BDQOL). RESULTS: For the test-retest reliability, good agreements were achieved on items such as headache, oral/genital ulceration, erythema, skin pustules, arthralgia, nausea/vomiting/abdominal pain, and diarrhea with altered/frank blood per rectum. Moderate agreement was observed for eye and nervous system involvement. We achieved a fair agreement for arthritis and major vessel involvement. Significant correlations were obtained between the total BDCAF score with the BDQOL and the patient's/clinician's perception of disease activity p < 0.05). CONCLUSIONS: The Korean version of the BDCAF is a reliable and valid instrument for measuring current disease activity in Korean BD patients.
Adult ; Asian Continental Ancestry Group/psychology ; Behcet Syndrome/*diagnosis/physiopathology/psychology ; Comprehension ; Cultural Characteristics ; Female ; Humans ; Language ; Male ; Middle Aged ; Observer Variation ; Predictive Value of Tests ; Reproducibility of Results ; Republic of Korea/epidemiology ; Severity of Illness Index ; *Surveys and Questionnaires

BACKGROUND: Although the incidence of chronic urticaria in children is increasing, research on the disease is limited. OBJECTIVE: We aimed to study the clinical and etiological characteristics of chronic urticaria in pediatric patients. METHODS: From July 2013 to December 2016, patients with chronic urticaria aged less than 18 years answered questionnaires regarding their symptoms and provoking factors or specific exposures related to the disease. Some patients were also investigated with physical provocation and/or laboratory tests. RESULTS: A total of 74 patients (male to female ratio, 1.0) with a mean age of 11.1 years (range, 1.1~18.7 years) were evaluated. The severity of urticaria was classified into mild (23.0%), moderate (43.2%), and severe (33.8%) according to the patient rating scale. Twenty-one patients (28.4%) had a previous history of atopic disease. Some patients reported accompanying angioedema (18.9%) and general symptoms, such as fatigue (14.9%) and nausea or vomiting (8.1%). The etiology was identified in 14 patients (18.9%): 9 patients had dermographic urticaria, 3 patients had cholinergic urticaria, 1 patient had cold urticaria, and 1 patient had dermographic combined with cholinergic urticaria. Results of thyroid autoantibody and antinuclear antibody tests were positive in 4 patients (30.8%) and 13 patients (27.7%), respectively. Remission rates at 1, 2, and 3 years after the onset of chronic urticaria symptoms were 40.6%, 50.7%, and 52.2%, respectively. A mild urticaria severity score and the presence of angioedema seemed to be good prognostic factors for the remission of chronic urticaria. CONCLUSION: Based on the results of this single-center study, further investigation is warranted to determine the incidence, etiology, and distinct features of chronic urticaria in children compared to those in adults.
Adult ; Angioedema ; Antibodies, Antinuclear ; Child* ; Fatigue ; Female ; Humans ; Incidence ; Nausea ; Prognosis ; Thyroid Gland ; Urticaria* ; Vomiting

Bilateral fibroepithelial polyps of the ureter are scarcely seen benign mesodermal tumor that occurs most often at the proximal ureter. Most patients present with either hematuria due to necrosis at urethral polyp of flank pain secondary to partial ureteral obstruction. The Diagnosis may be established with intravenous pyelography, retrograde pyelography, ureteroscopy and CT. Local resection is the treatment of choice. We report a case of bilateral fibroepithelial polyps of the ureter with a brief review of literatures.
Diagnosis ; Flank Pain ; Hematuria ; Humans ; Mesoderm ; Necrosis ; Polyps* ; Ureter* ; Ureteral Obstruction ; Ureteroscopy ; Urography

BACKGROUND/AIMS: We prepared a cross-cultural adaptation of the Behcet's Syndrome Activity Scale (BSAS) and evaluated its reliability and validity in Korea. METHODS: Fifty patients with Behcet's disease (BD) who attended the Rheumatology Clinic of Gachon University Gil Medical Center were included in this study. The first BSAS questionnaire was administered at each clinic visit, and the second questionnaire was completed at home within 24 hours of the visit. A Behcet's Disease Current Activity Form (BDCAF) and a Behcet's Disease Quality of Life (BDQOL) form were also given to patients. The test-retest reliability was analyzed by intraclass correlation coefficients (ICC). To assess the validity, the total BSAS score was compared with the BDCAF score, the patient/physician global assessment, and the BDQOL by Spearman rank correlation. RESULTS: Twelve males and 38 females were enrolled. The mean age was 48.5 years and the mean disease duration was 6.7 years. Thirty-eight patients (76.0%) returned the questionnaire by mail. For the test-retest reliability, the two assessments were significantly correlated on all 10 items of the BSAS questionnaire (p < 0.05) and the total BSAS score (ICC, 0.925; p < 0.001). The total BSAS score was statistically correlated with the BDQOL, BDCAF, and patient/physician global assessment (p < 0.01). CONCLUSIONS: The Korean version of BSAS is a reliable and valid instrument to measure BD activity.
Academic Medical Centers ; Adult ; Behcet Syndrome/*diagnosis/physiopathology/psychology ; Cost of Illness ; Cultural Characteristics ; Female ; Humans ; Male ; Middle Aged ; *Patient Reported Outcome Measures ; Predictive Value of Tests ; Quality of Life ; Reproducibility of Results ; Republic of Korea ; Severity of Illness Index

OBJECTIVE: This study measured the reliability of the Behcet's Disease Current Activity Form (BDCAF) questionnaire used as a patient self-report form. METHODS: A study was conducted among 63 patients with Behcet's disease who attended our rheumatology clinic. First, a physician administered a BDCAF questionnaire. Second, the patient completed a self-administered questionnaire at home within 24 hours of the visit. The test-retest reliability was analyzed using kappa tests. Kappa scores of >0.6 indicated good agreement. The BDCAF score was compared with the patient's/clinician's perception of disease activity and the Korean version of Behcet's Disease Quality of Life (BDQOL). RESULTS: The study included 17 males and 46 females. The mean age of participants was 47.7 years and the mean disease duration was 5.3 years at the first assessment. Fifty-three patients (84.1%) returned the questionnaires to us by mail. For test-retest reliability, good agreement was achieved with the items including headache, oral/genital ulceration, erythema, arthritis, and diarrhea with altered/frank blood per rectum; moderate agreement with skin pustules, arthralgia, and eye involvement; fair agreement with nausea/vomiting/abdominal pain, nervous system, and major vessel involvement. Significant associations were observed between BDCAF scores with the patient's/clinician's perception of disease activity and BDQOL (p<0.05). CONCLUSION: The BDCAF appears useful as a patient self-report instrument for assessment of disease status.
Arthralgia ; Arthritis ; Diarrhea ; Erythema ; Female ; Headache ; Humans ; Male ; Nervous System ; Postal Service ; Quality of Life ; Rectum ; Rheumatology ; Skin ; Ulcer