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#author("2024-12-07T09:02:50+09:00","","") 536; 95% CI 0.947-2.409; p=0.081). Furthermore, resident participation had no influence on tumor recurrence rate (R Group 14.2% vs. A Group 16.9%; p=0.588) or on overall (p = 0.562) or disease-free survival (p = 0.305). Resident involvement in laparoscopic colorectal surgery had no influence on morbidity and mortality or oncological prognosis in our center. Conducting prospective studies in this regard will provide greater knowledge, enabling a progressive improvement of the training program.Resident involvement in laparoscopic colorectal surgery had no influence on morbidity and mortality or oncological prognosis in our center. Conducting prospective studies in this regard will provide greater knowledge, enabling a progressive improvement of the training program. To describe the experience of the robotic approach for achalasia surgery in a tertiary center. Patients with achalasia who underwent robotic surgery between May 2010 and April 2019 were analyzed. The study variables were collected in a prospective database and a descriptive analysis was performed. 45 patients (55.6% male) with a mean age of 44 years were included. The main symptom at diagnosis was dysphagia. 19 patients (42.2%) received endoscopic treatment prior to surgery, mostly pneumatic dilation (84.2%). Heller's myotomy associated with Toupet fundoplication was the surgical technique of choice, with a mean operative time of 211minutes. The average stay was 5 days. There were 2 postoperative perforations (4.4%). Perioperative mortality was 0%. The mean follow-up was 64 months. At 3 and 5 years, a significant decrease in the Eckardt score was observed and the manometric study showed a decrease in the lower esophageal sphincter pressure at rest of 58% and 70%, respectively, with persistence of hypomotility of the esophageal body. Pathological gastroesophageal reflux was diagnosed in two patients (5.4%) and 4 (10.8%) presented recurrence of symptoms, requiring endoscopic pneumatic dilations. In 2 cases, the dilations were not effective, so an endoscopic myotomy was considered. In our experience, robotic surgery is a safe and effective procedure for the treatment of achalasia.In our experience, robotic surgery is a safe and effective procedure for the treatment of achalasia. Zirconia is a polymorphic metastable material which can react through a phase transformation from tetragonal to monoclinic when exposed to mechanical, physical, or chemical stimuli. The purpose of this invitro study was to investigate the fracture strength and phase structure of different high-translucency zirconia ceramics depending on the changes in sintering duration and thermocycling. Two monolithic zirconia ceramics, Katana (KAT) and NexxZr (NEX), were used to prepare disk-shaped specimens (n=66). The sintering temperature was 1500 °C, and 3 different sintering durations were tested 1 hour, 2 hours (recommended by the manufacturer), and 3 hours. Thermocycling was applied to half the specimens. Fracture strength was calculated, and the specimens were analyzed with an X-ray diffractometer (XRD) to determine the level of the phase transformation. The normal distribution of the data was analyzed by using the Shapiro-Wilk test. Two-way ANOVA was used to compare multiple groups (α=.05). The Fisher least red for 3 hours. Thermocycling decreased the fracture strength of both zirconias, except when the sintering duration was 2 hours for NEX. The fracture strength was higher for NEX than for KAT. Tetragonal-monoclinic phase transformation was not found for either zirconia according to the XRD analysis. Porcelain laminate veneers without tooth preparation (no-prep veneers) might represent a convenient and conservative option for the esthetic rehabilitation of anterior teeth. However, controversy exists about their predictability. The purpose of this clinical study was to retrospectively evaluate the performance of no-prep porcelain veneers placed as per the recently proposed "CH no-prep" protocol, which claimed to overcome many of the drawbacks of previous no-prep veneer solutions. One hundred eight no-prep porcelain laminate veneers based on the CH no-prep protocol were placed in 21 patients between 2015 and 2017. All participants were contacted, and 15 received a recall examination a total of 78 veneers were evaluated as per the Clinical-Photographic-Micromorphologiccoding. Plaque and gingival indexes and any increase in gingival recession were recorded. Pulp vitality was verified. A survival rate based on the count of absolute failures and a success rate summarizing the effect of both absolute and rl esthetic and anatomic integration, confirmed that a prepless approach may be safely adopted provided that strict rules for patient selection and finish line placement are adopted.Porcelain laminate veneers placed as per the CH no-prep protocol demonstrated excellent performances after 36 to 60 months of clinical service. The achieved outcomes, in terms of color match and overall esthetic and anatomic integration, confirmed that a prepless approach may be safely adopted provided that strict rules for patient selection and finish line placement are adopted. The wear of monolithic zirconia against enamel has been widely studied, but how zirconia affects different opposing restorative materials is not clear. The purpose of this invitro study was to investigate the depth of wear and volumetric loss of different restorative materials opposed by monolithic zirconia. Sixty-six Ø10×3-mm specimens (n=11) were fabricated from monolithic zirconia, zirconia reinforced ceramic, lithium disilicate ceramic, feldspathic ceramic, ORMOCER, and ceramic optimized polymer. A 2-body pin-on-disk wear test was performed by using monolithic zirconia pins. https://www.selleckchem.com/products/crenolanib-cp-868596.html The specimens were scanned with a noncontact profilometer after the tests. The scan parameters were a frame size area of 1.5×1.5 mm, frequency of 400 Hz, and scan sensitivity of 2 μm. After the evaluation of depth and volume loss, the specimens were analyzed with a scanning electron microscope. The Kruskal-Wallis test was used to analyze the differences in wear values across the specimen groups, and pairwise comparison tests were performed with a post hoc test (α=.
