Assessment of Intra-Oral Repair Systems for Veneered Zirconia and Zirconia Only

The aim of this study was to compare bond strength resin composites to porcelain laminate veneers in the indirect repair method to composite resins used in the direct repair method for cases of porcelain veneer fracture of zirconia-based fixed dental prostheses. In the study, the groups were formed with different percentages of areas to be repaired to mimic porcelain fractures in the mouth. The experimental group of veneered zirconia were as follows: Group A = 100% Zr surface; Group B = 70% Zr, 30% porcelain surface; Group C = 50% Zr, 50% porcelain surface; Group D = 30% Zr, 70% porcelain surface; Group E = 100% porcelain surface. The repairs of the specimens were made using composite resin systems in half of the groups and using porcelain laminate veneers in the other half. Specimens were embedded in acrylic blocks before surface treatments and repairs were applied. After surface conditioning, laminate veneers were applied to the first half of the groups, and composite repair systems were applied to the second half of the groups. After all specimens were aged by thermal cycling, their bond strength values were measured using a Universal Testing Machine, and the obtained data were recorded. The specimens were examined with a stereomicroscope and classified according to failure types (adhesive/cohesive/mixed). Bond strength values were evaluated based on independent-samples t-test statistics. According to the comparisons among the groups, the bond strength of the indirect repairs made with the laminate material was higher than the bond strength of the repairs made with the composite. There was a statistically significant difference in favor of the indirect repair groups among all groups except for Group C. The highest bond strength was found in Group A in the indirect repair method, while the lowest bond was found in the direct repair method in Group E. Adhesive failure was mostly seen in the groups that were repaired with the composite

Assessment of intra-oral repair systems for veneered zirconia and zirconia only

The aim of this study was to compare bond strength resin composites to porcelain laminate veneers in the indirect repair method to composite resins used in the direct repair method for cases of porcelain veneer fracture of zirconia-based fixed dental prostheses. In the study, the groups were formed with different percentages of areas to be repaired to mimic porcelain fractures in the mouth. The experimental group of veneered zirconia were as follows: Group A = 100% Zr surface; Group B = 70% Zr, 30% porcelain surface; Group C = 50% Zr, 50% porcelain surface; Group D = 30% Zr, 70% porcelain surface; Group E = 100% porcelain surface. The repairs of the specimens were made using composite resin systems in half of the groups and using porcelain laminate veneers in the other half. Specimens were embedded in acrylic blocks before surface treatments and repairs were applied. After surface conditioning, laminate veneers were applied to the first half of the groups, and composite repair systems were applied to the second half of the groups. After all specimens were aged by thermal cycling, their bond strength values were measured using a Universal Testing Machine, and the obtained data were recorded. The specimens were examined with a stereomicroscope and classified according to failure types (adhesive/cohesive/mixed). Bond strength values were evaluated based on independent-samples t-test statistics. According to the comparisons among the groups, the bond strength of the indirect repairs made with the laminate material was higher than the bond strength of the repairs made with the composite. There was a statistically significant difference in favor of the indirect repair groups among all groups except for Group C. The highest bond strength was found in Group A in the indirect repair method, while the lowest bond was found in the direct repair method in Group E. Adhesive failure was mostly seen in the groups that were repaired with the composite

Erişkinde iki taraflı primer reflüksif ve obstrüktif olmayan megaüreter: Çok nadir bir olgu

Reflüksif ve obstrüktif olmayan megaürter genellikle yeni doğanlarda teşhis edilir. Yetişkinlerde çok nadirdir. Bu olgu sunumunda makroskopik hematüri ile başvuran 45 yaşındaki bir erkek hasta sunuldu. Klinik değerlendirmelerden sonra primer reflüksif ve obstrüktif olmayan megaüreter teşhisi kondu. Buna ek olarak, bu çok ender vaka eşliğinde mevcut literatürü gözden geçirdik.Non-refluxing and non-obstructive megaureter is usually diagnosed in neonates. It is very rare in adults. Herein we presented a 45 year-old man with macroscopic hematuria. He was diagnosed primary non-refluxing non-obstructive megaureter after clinical evaluations. In addition we reviewed current literature in the light of this very rare condition

Predicting Strict Trifecta Outcomes after Robot-Assisted Partial Nephrectomy: Comparison of RENAL, PADUA, and C-Index Scores

Nephrometry scores are designed to characterize tumors and stratify the surgical complexity. It remains unclear as to which nephrometry score can accurately predict the surgical outcomes. We aimed to assess the utility of radius, exophytic/endophytic, nearness, anterior/posterior, location (RENAL), preoperative aspects and dimensions used for anatomic classifications (PADUA), and centrality index (C-index) nephrometry scores for predicting the strict Trifecta achievement from a single institution series robotic-assisted partial nephrectomy (RAPN). We retrospectively identified the prospectively maintained robotic surgery database records of 91 patients who underwent RAPN between June 2015 and September 2020 in Antalya Training and Research Hospital. The main outcome of the study was the achievement of strict Trifecta (negative surgical margin, no major urologic complications, warm ischemia time ≤25 min, and ≥85% preservation of estimated glomerular filtration rate). A multivariable analysis was performed to identify the factors of strict Trifecta success. The mean patient age was 55.82 ± 13.37 years with a median clinical tumor size of 3.5 cm (IQR 2.5–4.9). The median RENAL, PADUA, and C-index score were 7(IQR 6–8), 8(IQR 7–10), and 2.01(IQR 1.64–2.72), respectively. A strict Trifecta could be achieved in 54 patients (59.3%). Clinical tumor size (P = 0.011), RENAL risk groups (low:reference; intermediate; P = 0.040; high; P = 0.009), PADUA risk groups (low:reference; intermediate; P = 0.044; high; P = 0.001) and C-index risk groups (low:reference; high; P = 0.015) were the independent predictors of strict Trifecta attainment in the multivariate analysis. None of the nephrometry scores were a superior predictor compared to other nephrometry scores in comparative analysis. RENAL, PADUA, and C-index scores were all independent predictors of a strict Trifecta achievement. Our comprehensive comparison of the three scores identified that none of the nephrometry scores proved to be inferior to others nephrometry scores

Complications of Robotic Surgery in Urology: Our Experience of 342 Procedures Including the Learning Curve

Objective:The aim of this study is to analyze the complications of all robot-assisted surgeries performed in our clinic and to investigate the effect of the learning curve on complications occurred.Materials and Methods:Data on a total of 342 robotic surgeries performed in our clinic between March 2015 and February 2018 was retrospectively analyzed. Two surgeons, who performed the surgery, were experienced in urological laparoscopic procedures. Intraoperative and postoperative complications were evaluated. According to the experience of robotic surgery, the complications were divided into two groups as those occurred in the first 18 months (March 2015-August 2016) and in the second 18 months (September 2016-February 2018). The complications were classified according to the Clavien-Dindo classification.Results:A total of 32 complications occurred in 31 of 342 patients undergoing robot-assisted surgery. The overall complication rate was 9.4%. The number of minor complications was 20 (62.5%), and the number of major complications was 12 (37.5%). Among all, 6.2% were intraoperative complications, 62.5% were postoperative complications, and 31.3% were medical complications. It was observed that the number of complications was plateaued after August 2016 and there was a statistically significant difference between the first and the second 18 months (p<0.05).Conclusion:Laparoscopic surgery experience alone is not enough to reduce complications in robot-assisted surgery and learning continues with every case. An experienced surgeon and robotic surgery team are needed for complex robotic surgeries

Some physicochemical characteristics of Yarseli Lake, Hatay, Turkey

Lakes are sometimes subjected to wastewater discharges originating from different sources. Chemicals such as nitrogen, phosphorus and carbon in certain concentrations might distort and disrupt aquatic ecosystems. Eutrophication of inland bodies of water has become synonymous with the deterioration of water quality, which interferes with most of its beneficial uses. This study, purposing to determine water quality characteristics of Yarseli Lake, located in Antakya, Hatay, began in April 2003 and was carried out for 12 months by taking monthly water samples from two different stations. Water quality parameters of pH, dissolved oxygen, temperature, salinity, chemical oxygen demand (COD), total alkalinity and hardness, ammonia, nitrite, nitrate, phosphate, sulphite, sulphate, chloride, potassium, sodium and silica analyses were done. Changes in water quality parameters of Yarseli Lake by months were determined. This study indicates that Yarseli Lake has not reached the eutrophic stage yet.Lakes are sometimes subjected to wastewater discharges originating from different sources. Chemicals such as nitrogen, phosphorus and carbon in certain concentrations might distort and disrupt aquatic ecosystems. Eutrophication of inland bodies of water has become synonymous with the deterioration of water quality, which interferes with most of its beneficial uses. This study, purposing to determine water quality characteristics of Yarseli Lake, located in Antakya, Hatay, began in April 2003 and was carried out for 12 months by taking monthly water samples from two different stations. Water quality parameters of pH, dissolved oxygen, temperature, salinity, chemical oxygen demand (COD), total alkalinity and hardness, ammonia, nitrite, nitrate, phosphate, sulphite, sulphate, chloride, potassium, sodium and silica analyses were done. Changes in water quality parameters of Yarseli Lake by months were determined. This study indicates that Yarseli Lake has not reached the eutrophic stage yet

Impact of using thiocolchicoside during endoscopic ureteral calculi removal: A preliminary study

Ates, Erhan/0000-0002-9677-5673;WOS: 000366731000005PubMed: 26174074

Al-6013-T6 and Al-7075-T7351 alloy anodes for aluminium-air battery

This study is aimed to determine the appropriate anode material (pure Al, 6013-T6; Al1 and 7075-T7351; Al2) for Al-air batteries. Electrochemical Measurements, Galvanostatic Anodic Dissolution Test and Surface Characterization are performed. The corrosion rate and the hydrogen gas evolution rate are calculated. Anodic dissolution test is carried out at the current density of 10–50 mA cm-2. The weight loss measurements were performed. The anode utilization (Ua%) and capacity density are calculated. The surface morphology of electrodes is investigated by scanning electron microscope (SEM) and mapping imagines are taken. The surface analysis also is performed by energy dispersive X-ray spectrometer (EDS) and contact angles are determined by Young–Laplace Contact Angle method. As a result, it is seen that alloy elements change the surface characteristics during discharging of the battery and the battery performance is positively affected. Especially, copper shows surprisingly synergistic effect with aluminium on the alloy surface. © 2017 Hydrogen Energy Publications LL

Water quality of Hasan Stream (Erzin-Hatay) and montly variations

Bu çalışmada, kaynağı Osmaniye ili sınırları içerisinde olan ve sık ormanlık alandan geçerek Hatay ili Dörtyol ilçesinde İskenderun körfezine dökülen Dörtyol ve Payas ilçelerinin içme suyunu karşılayan Hasan Çayı'nın bazı su kalitesi özelliklerinin belirlenmesi amaçlanmıştır. Çalışmaya Mayıs 2003'te başlanmış olup su kalitesi parametrelerinden pH, çözünmüş oksijen, sıcaklık, tuzluluk, kimyasal oksijen ihtiyacı (KOİ), toplam alkalinite ve sertlik, amonyak, nitrit, nitrat, fosfat, sülfit, sülfat, klor, potasyum, sodyum, silisyum ve askıda katı madde (AKM) değerleri 12 ay boyunca aylık olarak incelenmiştir. Yapılan çalışma sonucunda Hasan Çayı su kalitesi parametrelerinin aylara göre değişimleri belirlenmiş olup ayrıca mevcut su kalitesi durumu alabalık gibi soğuk su türlerinin yetiştiriciliği için uygun olduğu görülmüştür.In the present study, some water quality parameters of Hasan Creek, which source from city of Osmaniye, flow through dense woody area and merge into İskenderun Bay from D&ouml;rtyol, Hatay, were investigated. The creek supplies the drinking water of D&ouml;rtyol and Payas towns. Starting from May 2003 and sampling the water monthly for a year, water quality parameters of pH, dissolved oxygen, temperature, salinity, Chemical Oxygen Demand (COD), total alkalinity and hardness, ammonia, nitrite, nitrate, phosphate, sulphite, sulphate, chloride, potassium, sodium, silica and total dissolved solids were measured in the present study. According to measured study results, changes in water quality parameters of Hasan Creek respect to the months were determined. Measured water quality parameters indicated that the creek water is suitable for the culture of cold-water fish such as trout

Assessment of Intra-Oral Repair Systems for Veneered Zirconia and Zirconia Only

The aim of this study was to compare bond strength resin composites to porcelain laminate veneers in the indirect repair method to composite resins used in the direct repair method for cases of porcelain veneer fracture of zirconia-based fixed dental prostheses. In the study, the groups were formed with different percentages of areas to be repaired to mimic porcelain fractures in the mouth. The experimental group of veneered zirconia were as follows: Group A = 100% Zr surface; Group B = 70% Zr, 30% porcelain surface; Group C = 50% Zr, 50% porcelain surface; Group D = 30% Zr, 70% porcelain surface; Group E = 100% porcelain surface. The repairs of the specimens were made using composite resin systems in half of the groups and using porcelain laminate veneers in the other half. Specimens were embedded in acrylic blocks before surface treatments and repairs were applied. After surface conditioning, laminate veneers were applied to the first half of the groups, and composite repair systems were applied to the second half of the groups. After all specimens were aged by thermal cycling, their bond strength values were measured using a Universal Testing Machine, and the obtained data were recorded. The specimens were examined with a stereomicroscope and classified according to failure types (adhesive/cohesive/mixed). Bond strength values were evaluated based on independent-samples t-test statistics. According to the comparisons among the groups, the bond strength of the indirect repairs made with the laminate material was higher than the bond strength of the repairs made with the composite. There was a statistically significant difference in favor of the indirect repair groups among all groups except for Group C. The highest bond strength was found in Group A in the indirect repair method, while the lowest bond was found in the direct repair method in Group E. Adhesive failure was mostly seen in the groups that were repaired with the composite